Wikidot

Price: Free
“Wikidot.com is the world’s third-largest wiki farm, with almost half a million users running 120,000 sites and serving about 40M unique visitors per year.
With Wikidot.com you can create your own web projects in minutes. You use a mix of forums, wiki pages, templates, modules, custom themes, add-in packages, and reusable site templates to create almost any collaborative web project imaginable.”

Further Info

• Features
• Themes
• Support
• Documentation
• Wikipedia Entry

PBworks

Price: Free
“PBworks is the world’s largest provider of hosted collaboration solutions for business and education. We host over one million team workspaces, serve millions of users per month, and 96% of PBworks business users would recommend PBworks to a friend.”

Further Info

• Features
• Support
• Documentation
• Wikipedia Entry

Wikispaces

Price: Free

“Since early 2005 we’ve been dedicated to building the world’s easiest to use wiki service by listening closely to the ever growing Wikispaces community. We now host millions of wikis for over five million people and have products designed for the smallest classroom and the world’s largest corporations and institutions.”

Further Info

• Features
• Support
• Wikipedia Entry

Wikia

Price: Free

“Wikia is a collaborative publishing platform that enables communities to discover, create and share content on any topic in any language.”

Further Info

• Features
• Support
• Wikipedia Entry

Further Reading

• Wikipedia – Comparison Of Wiki Farms
• C4LPT -List Of Wiki Tools