Medium - Welcome to Medium, a place to read, write, and interact with the stories that matter most to you.

Discourse - Discourse is an open source discussion platform built for the next decade of the Internet.

Pressmo - Page Flip software that allow You to convert PDF files into digital magazines, page flip books, digital brochures, interactive catalogs and photo albums. Off-line (USB or CD) and on-line.

Flarum - Flarum is the next-generation forum software that makes online discussion fun. It's simple, fast, and free.

OverBlog - OverBlog is a blogging platform, active and evolving.

Simple Machines Forum - Simple Machines offers free open source software such as SMF, the powerful and easy to use community forum written in PHP. Start interesting discussions on your website!