Sites and apps similar to Infoplease include Wikipedia, which is free and open source. Other options are Encyclopædia Britannica, Metapedia, Scholarpedia and Oppia. In total there are seven Encyclopedias like Infoplease for Mac, Windows, Linux, Android and iPhone.
Free content, multilingual online encyclopedia written and maintained by a community of volunteers through a model of open collaboration, using a wiki-based editing system.
United States
The Encyclopædia Britannica is a general English-language encyclopaedia published by Encyclopædia Britannica, Inc., a privately-held company. The articles in the Britannica are aimed at educated adult readers, and written by a staff of about 100 full-time editors and...
United States
Metapedia is an electronic encyclopedia which focuses on culture, art, science, philosophy and politics.
Scholarpedia is a peer-reviewed open-access encyclopedia written and maintained by scholarly experts from around the world. Scholarpedia is inspired by Wikipedia and aims to complement it by providing in-depth scholarly treatments of academic topics.
Oppia is a free, open-source learning platform. Full of interactive activities called 'explorations', Oppia helps curious minds learn and teach.
United States
Non-profit history encyclopedia with the mission to engage people with cultural heritage and to improve history education worldwide.
Australia
Online dictionary and encyclopedia with pictures, facts, and videos. Get information and homework help with millions of articles in our free, online library.
