Description: BookStack is an open source knowledge management platform to help build and organize wikis for internal or public use. It allows you to collaboratively write and structure documents to organize knowledge, notes or documentation.
Type: software
Pricing: Free
Description: Openfire is an open source instant messaging and chat server. It uses the XMPP protocol and can be configured to work with many chat clients such as Spark, Pidgin, and Web clients. It is written in Java and has features like group chat, messaging archive, and plugins.
Type: software
Pricing: Open Source