1. A new tool that blends your everyday work apps into one. It's the all-in-one workspace for you and your team

  2. Collaborate with your team and share the data you care about in one place

  3. MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.

  4. TiddlyWiki — a non-linear personal web notebook

  5. Sphinx is an open source full text search server, designed with performance, relevance (search quality), and integration simplicity in mind. Sphinx lets you either batch index and search data stored in files, an SQL database, NoSQL storage.

  6. Sococo offers a virtual office where business teams can interact with one another, wherever they are.

  7. DEVONtechnologies develops DEVONthink, DEVONagent, and other Mac and iOS apps for document and information management and web research.

  8. Everwise connects professionals with the people and insights that can help them succeed at every stage of their career

  9. Quip is the modern productivity suite that simplifies your life and helps your team get work done faster.

  10. Easy to maintain open source documentation websites

  11. ThoughtFarmer makes it simple to communicate with your people. We deliver social intranet software that looks like you: lively, friendly, and helpful.

  12. The simplest way to keep notes. Light, clean, and free. Simplenote is now available for iOS, Android, Mac, and the web.