Scholarpedia

Scholarpedia is a wiki-based encyclopedia that features the English language articles and helpful materials only.

Aard Dictionary

Dictionary and offline Wikipedia reader.

A wiki for providing free knowledge where authors use their real, verified names.

A free wikifarm project allowing to keep private wiki and build it up through MediaWiki syntax.

The world’s largest english encyclopedia

Anyone can create a wiki!

Mapping all human knowledge

Google Knol was a free web based encyclopedia that was launched by Google as a competitor of the Wikipedia.

The planetary knowledge core

Most of the people are unaware about this web based encyclopedia that is no doubt the tough competitor of most of the online encyclopedias.

Investopedia has a lot of information to share with business mind people.

Metacademy - a free open source platform for efficient, personalized learning.

Metapedia is an electronic encyclopedia which focuses on culture, art, science, philosophy and…

Miraheze is a wiki farm (hosts wikis) for free and with no ads, it also provides custom domains…

A premium wiki host with top-class quality, excellent support, and VisualEditor (a WYSIWYG…

Oppia is a free, open-source learning platform.

The professional website platform for Drupal & WordPress sites.

Stubia is a mobile encyclopedia that limits each article to 160 characters: this limitation makes…

Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.