Apple
- iOS Human Interface Guidelines
https://developer.apple.com/library/ios/#documentation/UserExperience/Conceptual/MobileHIG/Introduction/Introduction.html - iOS Human Interface Guidelines（日本語訳）
https://developer.apple.com/jp/devcenter/ios/library/documentation/UserExperience/Conceptual/MobileHIG/BasicsPart/BasicsPart.html#//apple_ref/doc/uid/TP40006556-CH2-SW1 - iOS X Human Interface Guidelines
http://developer.apple.com/library/mac/#documentation/UserExperience/Conceptual/AppleHIGuidelines/Intro/Intro.html - Apple Watch Human Interface Guidelines
https://developer.apple.com/library/prerelease/ios/documentation/UserExperience/Conceptual/WatchHumanInterfaceGuidelines/index.html
- Google Design http://www.google.com/design/
- Material Design http://www.google.com/design/spec/material-design/
- Android Developer Material Design Pattern http://developer.android.com/design/patterns/index.html
- Android Design Guideline（翻訳 by kenji matsuoka） http://firespeed.org/diary.php?diary=kenz-1462
- Android Design Guideline（翻訳 by umeda kaoru） https://sites.google.com/a/techdoctranslator.com/jp/android/practices/ui_guidelines
Microsoft
- Windows UX Guideline http://msdn.microsoft.com/ja-jp/library/aa511258.aspx
- Windows ランタイム アプリのガイドライン https://msdn.microsoft.com/ja-jp/library/windows/apps/hh465424.aspx
- Design UWP apps https://dev.windows.com/ja-JP/design
- Metro Design http://dev.windows.com/ja-jp/design
- Windows Phone UX Design Guideline http://msdn.microsoft.com/library/windows/apps/hh202915(v=vs.92).aspx
- Windows Phone Design Library http://msdn.microsoft.com/ja-jp/library/hh202915.aspx
- Microsoft Surface 2 Design and Interaction Guide http://www.microsoft.com/en-us/download/details.aspx?id=26713
- Windows Phone 7 Series “Metro” book giveaway http://www.istartedsomething.com/20100325/windows-phone-7-series-metro-book-giveaway/
Salesforce
- Product Style Guide, Visual guidelines for Salesforce1 http://sfdc-styleguide.herokuapp.com/
HP
- Grommet http://grommet.io/
- Using Facebook Brand Assets https://www.facebookbrand.com/
Amazon
- User Interface Guidelines and Conventions https://developer.amazon.com/appsandservices/apis/earn/in-app-purchasing/docs/cx-ux-guidelines
- Design and User Experience Guidelines https://developer.amazon.com/public/solutions/devices/fire-tv/docs/design-and-user-experience-guidelines
SAP
- OpenUI5 http://sap.github.io/openui5/
Mozilla
- Mozilla Style Guide https://www.mozilla.org/en-US/styleguide/
Oracle
BlackBerry
- UI Guidelines http://docs.blackberry.com/en/developers/deliverables/27299/Design_for_a_limitless_canvas_1340687_11.jsp
Samsung
- Samsung Smart TV UX Guideline http://www.samsungdforum.com/UxGuide/2014/01_principles_for_designing_applications_for_samsung_smart_tv.html#ux-01