This gem is used by GitHub to render any fancy markup such as Markdown, Textile, Org-Mode, etc. Fork it and add your own!

Feature flag UI for the Flipper gem

This gem is used by GitLab to render any non Markdown markup

GitHub HTML processing filters and utilities

CommunityEngine is a free, open-source social network platform for Ruby on Rails applications. Drop it into your new or existing application, and you’ll instantly have all the features of a basic community site.

The best Rails 6.0+ forums engine ever. Its goal is to be as simple and feature rich as possible. Thredded works with SQLite, MySQL (v5.6.4+), and PostgreSQL. See the demo at https://thredded.org/.

A gem for generating embeddable HTML previews from URLs.

A simple, Git-powered wiki with a sweet API and local frontend.

A server that stores and returns pact files generated by the pact gem. It enables head/prod cross testing of the consumer and provider projects.

Pismo extracts and retrieves content-related metadata from HTML pages - you can use the resulting data in an organized way, such as a summary/first paragraph, body text, keywords, RSS feed URL, favicon, etc.

Pismo extracts and retrieves content-related metadata from HTML pages - you can use the resulting data in an organized way, such as a summary/first paragraph, body text, keywords, RSS feed URL, favicon, etc.

Generate cheat sheets for Dash

Command-line interface for softcover.io

LINES lets you manage your posts in a clear, consistent frontend. The gracefully slender editor keeps your editing simple and lets you just splash around in your ideas. Once you're happy, just hit publish and see your text, code examples, images, and links shine.

Qiita-specified markdown processor.

A simple, Git-powered wiki with a sweet API and local frontend.

The LocomotiveCMS Steam is the rendering stack used by both Wagon and Engine

Markdown + oEmbed + Sanitize + Syntax Highlighting = the ultimate user input rendering pipeline.

Local previews for Github markdown

A set of extensions to markdown layered on top of the kramdown library for use in the UK Government Single Domain project