• Can I Use

  Browser features support tables.

  caniuse.com

• Can I Stop

  Browser usage by region.

  canistop.net

Accessibility

• Who Can Use

  Colors combinations accessibility.

  whocanuse.com

• PowerMapper Tests

  Test results for assistive technologies.

  powermapper.com/tests

• Accessibility Support

  What to expect of screen readers and voice control apps.

  a11ysupport.io

• HTML5 Accessibility

  Accessibility support status of HTML5 features across major browsers.

  html5accessibility.com

Features

• MDN

  Resources for developers, by developers.

  developer.mozilla.org/docs/Web

• cssdb

  A database of staged (future) CSS features.

  cssdb.org

• Is Houdini Ready Yet?

  Houdini APIs support in different browsers.

  ishoudinireadyyet.com

Coming in your browsers

• Firefox platform status

  Implementation & standardization roadmap for web platform features.

  platform-status.mozilla.org

• Edge platform status

  View the status of web platform features in Edge Chromium and EdgeHTML.

  status.microsoftedge.com

• Webkit status

  webkit.org/status

• Chrome status

  chromestatus.com

Emails

• Can I email

  Support tables for HTML and CSS in emails.

  caniemail.com