Oppia is a free, open-source learning platform. Full of interactive activities called 'explorations', Oppia helps curious minds learn and teach.
Cost / License
- Free
- Open Source
Application type
Platforms
- Mac
- Windows
- Linux
- Online
- Self-Hosted

Referata is described as 'Offers hosting of semantic wikis, based on MediaWiki, allowing you to add, structure and store data so it can be managed, shared, browsed and analyzed in as many ways as you choose. Free: unlimited Wiki pages and 100MB file storage' and is a Wiki Engine in the education & reference category. There are more than 50 alternatives to Referata for a variety of platforms, including Web-based, Mac, Windows, Linux and Self-Hosted apps. The best Referata alternative is Wikipedia, which is both free and Open Source. Other great apps like Referata are TiddlyWiki, MediaWiki, DokuWiki and XWiki.
Oppia is a free, open-source learning platform. Full of interactive activities called 'explorations', Oppia helps curious minds learn and teach.

A new medium for your ideas—augment your thinking with a text editor designed for structuring lists. Side-by-side views allow 3 modes of thinking.



BlueSpice is your tool for documentation and centrally collecting and sharing knowledge. BlueSpice turns Wikipedia’s popular software engine MediaWiki into a fully-fledged EnterpriseWiki solution.




A web-based solution for sharing know-how: work instructions, procedures, knowledge base, product support, enterprise wiki.



Kexi is considered as a long awaited Open Source competitor for Microsoft Access, Filemaker and Oracle Forms.

TiddlyWiki for Windows. A unique non-linear notebook for capturing, organising and sharing complex information. ATWiki is an independent project of TiddlyWiki.


Citizendium, powered by MediaWiki, is "an open wiki project dedicated to creating a free, comprehensive, and reliable repository of structured knowledge". Unlike with Wikipedia, a contributor must register using their real name and verify their identity.

Instiki is a basic Wiki clone so pretty and easy to set up, you’ll wonder if it’s really a Wiki. Runs on Rails and focuses on portability and stability, Supports file uploads, LaTeX export, RSS feeds, S5 slideshows, multiple users and password protection.

Zoho Wiki is Free Hosted Wiki with WYSIWYG Editor, Access Control, Versioning, Search Engine Friendly, Tags, Dashboard, Moveable Sitemap, RSS. Create pages in your wiki, Collaborate with anyone, Share information with Organization or Group or Everyone in the world.




MobiDB Database is an offline database app with cloud sync and multi-user access and synchronization. It is able to store any type of information: inventory, invoices, project management, deliveries, orders, locations.




Foswiki is the free and open source enterprise collaboration platform. Foswiki is a wiki, so you and your team members can collaborate and edit pages directly in the web browser. For advanced collaboration, Foswiki lets you enter macros to automate pages and build entire applicat.
