Alternatives and similar repositories for quirks

Users that are interested in quirks are comparing it to the libraries listed below

• whatwg / fullscreen
  Fullscreen API Standard
  ☆108Updated this week
• whatwg / html-build
  Build scripts for https://github.com/whatwg/html
  ☆66Updated 2 months ago
• whatwg / domparsing
  DOM Parsing and Serialization Standard
  ☆22Updated 5 years ago
• whatwg / storage
  Storage Standard
  ☆142Updated last month
• whatwg / misc-server
  Miscellaneous resources for the servers hosting *.whatwg.org domains
  ☆25Updated last week
• whatwg / whatwg.org
  The WHATWG website and other static resources
  ☆83Updated 2 months ago
• whatwg / web-history
  Milestones in the history of the modern Web platform
  ☆68Updated 5 years ago
• w3c / node-w3capi
  A JavaScript client for the W3C API
  ☆32Updated last week
• whatwg / mimesniff
  MIME Sniffing Standard
  ☆118Updated this week
• w3c / permissions
  Permissions API
  ☆105Updated 3 months ago
• whatwg / figures
  CSS Figures
  ☆19Updated 4 years ago
• whatwg / compat
  Compatibility Standard
  ☆134Updated last month
• w3c / mdn-spec-links
  MDN Spec Links – Linking specs to MDN and browser-support data
  ☆24Updated last month
• w3c / ash-nazg
  One interface to find all group contributors and in IPR bind them
  ☆31Updated last month
• whatwg / notifications
  Notifications API Standard
  ☆144Updated this week
• whatwg / sg
  A place to raise issues with the WHATWG Steering Group
  ☆73Updated 4 months ago
• w3c / page-visibility
  Page Visibility
  ☆35Updated 3 years ago
• whatwg / infra
  Infra Standard
  ☆149Updated this week
• w3c / i18n-drafts
  A place to edit articles, tutorials, and the like for the /International subtree of the W3C site. Also, captures issues and comments.
  ☆74Updated last week
• w3c / fxtf-drafts
  Historical
  ☆79Updated last month
• whatwg / participant-data
  How we track participants in the WHATWG
  ☆40Updated this week
• GoogleChrome / multi-device
  Chrome multi-device (mobile) docs
  ☆104Updated 3 years ago
• w3c / screen-orientation
  The screen orientation lock specification
  ☆29Updated 2 months ago
• w3ctag / tag.w3.org
  TAG current work github page
  ☆28Updated 2 months ago
• w3c / resource-hints
  Resource Hints
  ☆82Updated 2 years ago
• w3c / reffy
  Reffy is a Web spec crawler and analyzer tool. It is notably used to update Webref
  ☆78Updated this week
• w3c / developers
  The one-stop place to find the information and tools you need to help you learn, build, and move the web forward.
  ☆40Updated 2 years ago
• w3c / tr-design
  CSS used by W3C specs (this repo is not about the w3.org/TR index page)
  ☆69Updated 2 months ago
• w3c / resource-timing
  Resource Timing
  ☆133Updated last month
• WICG / origin-policy
  [On hold for now] A mechanism for origins to set their origin-wide configuration in a central location
  ☆33Updated 3 years ago