List of sites with source code

The more code you will read the more ideas can be received and the more potential errors can be avoided

React

Sites

• Sentry (source)
• Buildkit (source)
• Buildkit (archived) (source)
• Spectrum chat (source)
• Codesandbox (source)
• Devhub (source)
• Syntax. podcast (source)
• p5.js Web Editor (source)
• Jitsi Meet - Video Conferences (source)
• HeadlessCMS.org (source)
• StaticGen.com (source)
• Stoplight: Best in class API Design, Docs, Mocking, and Testing (source)
• OpenDota - Dota 2 data (source)

Tools

• Firefox Debugger (source)

Personal blogs

• TannerLinsley.com (source)
• Dan Webb - Personal Website (source)
• Fourth Drive - Music Artist (source)

Books

• Builderbook.org (source)

Pure Web

Personal blogs

• Igor Kamyshev — Personal Website (source)