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JUCE Advent Calendar 2026

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Category:Native application

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JUCE Advent Calendar 2026

C++フレームワーク JUCE についてのアドベントカレンダーです。

JUCEに関するアレコレについて語ろう!!!

  • JUCEに関するTips
  • JUCEを使って作ったもの
  • JUCEと他のツールの連携・コラボレーション
  • 3rd party製JUCEモジュールの紹介
  • JUCE 9を触ってみた感想

などなど、普段から利用している方、初めて触ってみた方、まだ触ったことないけど興味がある方、皆様のご参加をお待ちしております。

キーワード:JUCE, C++, DAW, Tracktion Engine, AudioPlugin, VST, AudioUnit, CLAP, LV2, MIDI, MIDI2.0

JUCEって何?

JUCE(https://juce.com/)は音楽分野で広く利用されているC++フレームワークです。2004年に Julian Sotrer 氏が公開したC++ライブラリ「Jules’ Utility Class Extensions」が始まりで、その頭文字をとって JUCE と呼んでいます。

引用:『C++でつくる ゲーム、対戦AI、CG、オーディオ、電子工作、競プロ、CI/CD、言語仕様』技術評論社、2026年、p.137

JUCEライブラリはクロスプラットフォームな設計となっていることに加えて、付属のプロジェクトジェネレータ『Projucer』から各種IDE(VisualStudio, Xcode, Makefile)向けにプロジェクトファイルを出力することで、ワンソースからWindows, macOS, Linux, iOS, Android で動作するアプリケーションを作成することができるので、C++プロジェクトの構築からコーディングまで一気通貫で完結することができます。また、プロジェクト管理ツールに『CMake』も正式サポートされていることから、CMakeのエコシステムを利用することも可能です。

現在は2026年にリリースされたJUCE 9が最新メジャーバージョンです。
https://juce.com/

JUCEの特徴は?

JUCEの最大の特徴として、オーディオプラグインを開発するためのテンプレートが充実していることが挙げられます
特に、VSTプラグインといった、DTMユーザーにはお馴染みのプラグインフォーマットを開発するのに長けており、日本国内外で多くの採用事例があります。

How to join the calendar

You can join the calendar by selecting an available date and registering the URL of the article you wish to link to. If a slot is available, you can go back to a past date to join!

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Series 1

SundayMondayTuesdayWednesdayThursdayFridaySaturday
2930
JUCEハンズオン2026 ~JUCE 9の紹介とともに~

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When you participate, we will assume that you have agreed to the terms of use

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About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

JUCEゲームプログラミング入門

Overwrite

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About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

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Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

Join calendar on 6 day

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Articles to be submitted are welcome on any website as well as on Qiita.

About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

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Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

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When you participate, we will assume that you have agreed to the terms of use

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If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

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When you participate, we will assume that you have agreed to the terms of use

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If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

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When you participate, we will assume that you have agreed to the terms of use

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If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

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If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

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When you participate, we will assume that you have agreed to the terms of use

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When you participate, we will assume that you have agreed to the terms of use

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If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

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When you participate, we will assume that you have agreed to the terms of use

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Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

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When you participate, we will assume that you have agreed to the terms of use

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When you participate, we will assume that you have agreed to the terms of use

Join calendar on 23 day

You can also reserve a slot without registering a title or URL.

Articles to be submitted are welcome on any website as well as on Qiita.

About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

Join calendar on 24 day

You can also reserve a slot without registering a title or URL.

Articles to be submitted are welcome on any website as well as on Qiita.

About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

Join calendar on 25 day

You can also reserve a slot without registering a title or URL.

Articles to be submitted are welcome on any website as well as on Qiita.

About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

26
  1. JUCEハンズオン2026 ~JUCE 9の紹介とともに~

    Overwrite

    You can post either your article on Qiita or your blog post.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  2. Join calendar on 2 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  3. Join calendar on 3 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  4. Join calendar on 4 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  5. JUCEゲームプログラミング入門

    Overwrite

    You can post either your article on Qiita or your blog post.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  6. Join calendar on 6 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  7. Join calendar on 7 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  8. Join calendar on 8 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  9. Join calendar on 9 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  10. Join calendar on 10 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  11. Join calendar on 11 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  12. Join calendar on 12 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  13. Join calendar on 13 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  14. Join calendar on 14 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  15. Join calendar on 15 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  16. Join calendar on 16 day

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    About reserved posting

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    When you participate, we will assume that you have agreed to the terms of use

  17. Join calendar on 17 day

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    About reserved posting

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    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  18. Join calendar on 18 day

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    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

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    When you participate, we will assume that you have agreed to the terms of use

  19. Join calendar on 19 day

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    When you participate, we will assume that you have agreed to the terms of use

  20. Join calendar on 20 day

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    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  21. Join calendar on 21 day

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    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  22. Join calendar on 22 day

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    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

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    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  23. Join calendar on 23 day

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    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  24. Join calendar on 24 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  25. Join calendar on 25 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

SundayMondayTuesdayWednesdayThursdayFridaySaturday
2930
JUCEハンズオン2026 ~JUCE 9の紹介とともに~

Overwrite

You can post either your article on Qiita or your blog post.

About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

Join calendar on 2 day

You can also reserve a slot without registering a title or URL.

Articles to be submitted are welcome on any website as well as on Qiita.

About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

Join calendar on 3 day

You can also reserve a slot without registering a title or URL.

Articles to be submitted are welcome on any website as well as on Qiita.

About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

Join calendar on 4 day

You can also reserve a slot without registering a title or URL.

Articles to be submitted are welcome on any website as well as on Qiita.

About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

JUCEゲームプログラミング入門

Overwrite

You can post either your article on Qiita or your blog post.

About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

Join calendar on 6 day

You can also reserve a slot without registering a title or URL.

Articles to be submitted are welcome on any website as well as on Qiita.

About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

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When you participate, we will assume that you have agreed to the terms of use

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Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

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Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

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If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

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If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

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Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

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If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

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About reserved posting

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Join calendar on 23 day

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About reserved posting

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When you participate, we will assume that you have agreed to the terms of use

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About reserved posting

If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

About posting period

Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

When you participate, we will assume that you have agreed to the terms of use

26
  1. JUCEハンズオン2026 ~JUCE 9の紹介とともに~

    Overwrite

    You can post either your article on Qiita or your blog post.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

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    When you participate, we will assume that you have agreed to the terms of use

  2. Join calendar on 2 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  3. Join calendar on 3 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  4. Join calendar on 4 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  5. JUCEゲームプログラミング入門

    Overwrite

    You can post either your article on Qiita or your blog post.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  6. Join calendar on 6 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  7. Join calendar on 7 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  8. Join calendar on 8 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  9. Join calendar on 9 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  10. Join calendar on 10 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  11. Join calendar on 11 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  12. Join calendar on 12 day

    You can also reserve a slot without registering a title or URL.

    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  13. Join calendar on 13 day

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    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  14. Join calendar on 14 day

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    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  15. Join calendar on 15 day

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    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  16. Join calendar on 16 day

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    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

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    When you participate, we will assume that you have agreed to the terms of use

  17. Join calendar on 17 day

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    About reserved posting

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    About posting period

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    When you participate, we will assume that you have agreed to the terms of use

  18. Join calendar on 18 day

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    About reserved posting

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    About posting period

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    When you participate, we will assume that you have agreed to the terms of use

  19. Join calendar on 19 day

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    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

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    When you participate, we will assume that you have agreed to the terms of use

  20. Join calendar on 20 day

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    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

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    When you participate, we will assume that you have agreed to the terms of use

  21. Join calendar on 21 day

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    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

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    When you participate, we will assume that you have agreed to the terms of use

  22. Join calendar on 22 day

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    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

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    When you participate, we will assume that you have agreed to the terms of use

  23. Join calendar on 23 day

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    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  24. Join calendar on 24 day

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    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

  25. Join calendar on 25 day

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    Articles to be submitted are welcome on any website as well as on Qiita.

    About reserved posting

    If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.

    About posting period

    Only articles submitted after October 30, 2026 can be registered. (Secret articles can be registered anytime articles are posted.)

    When you participate, we will assume that you have agreed to the terms of use

You can increase the number of series when Calendar 1 is filled with more than 10 articles.