This is an online project to add videos to Wikipedia articles. The project is in its beginnings and everyone is invited to contribute their videos according to the guidelines specified in the website.
This is a great platform for teachers and students. You can use it to look for answers pertaining to any field of study from astronomy to education
Wiki Summarizer is a great application for educators. It automatically summarizes the Wikipedia articles using keywords. It also provides a list of related articles to your search query. These summaries are stored in a relational database for users to explore instantly and easily.
Wikihood also uses Google Map services allowing users to geolocalise what they search for. When you type in a query in their search box you will get two kinds of results one is in the form of a map with placemarks and the second next to it is Wikipedia articles.
wikiHow is a collaborative effort to create the world's most helpful how-to guides. Like Wikipedia, wikiHow is a wiki, in that anyone can write or edit a page on the site. Thousands of people from all over the world have collaboratively written 147,179 how-to articles. Over 35 million people a month read wikiHow according to Google Analytics and Quantcast ranks us as the 150th most popular website
Collaborative project for creating a free lexical database in every language, complete with meanings, etymologies, and pronunciations..
Wikiquote is a free online compendium of sourced quotations from notable people and creative works in every language, translations of non-English quotes, and many more
Wikibooks is a Wikimedia project for collaboratively writing open-content textbooks that anyone, including you, can edit right now by clicking on the edit link
Wikispecies is a wiki-based online project supported by the Wikimedia Foundation. Its aim is to create a comprehensive free content catalogue of all species
Wikiversity is a Wikimedia Foundation project devoted to learning resources, learning projects, and research for use in all levels, types, and styles of education
Wikinews is a free-content news source wiki and a project of the Wikimedia Foundation. The site works through collaborative journalism.
Wikisource is a Wikimedia project to build a library of free texts. Initially called "
Wikivoyage is a free web-based travel guide for both travel destinations and travel topics written by volunteer authors.