Top 10 Wiki software

Confluence provides one place for technical teams to collaborate—create, share, and discuss your ideas, files, minutes, specs, mockups, diagrams, and projects. A rich editor, deep Office and JIRA integration, and powerful plugins help teams collaboratively develop technical docs, intranets, and knowledge bases. Confluence free alternatives are: XWiki, MediaWiki, dokuwiki.
Enterprise social software with the fastest business value. With Socialtext, everyone knows what’s going on. People and teams are synchronized, engaged and informed. Socialtext provides a broad social software platform that has the ease of SaaS and the security of an on-site appliance. You get a quick deployment that focuses on your people, not on the software code.
MindTouch makes the world's most respected social knowledge base. It powers purpose-built help 2.0 communities that connect companies with their customers.
Google Sites is a structured wiki- and web page- creation tool offered by Google as part of the Google's Productivity suite. Unlike most alternatives Google Sites is free.
MediaWiki is a popular free web-based wiki software application. Developed by the Wikimedia Foundation, it is used to run all of its projects, including Wikipedia, Wiktionary and Wikinews. It is written in the PHP programming language and uses a backend database.
Upload, edit, share, and synchronize documents with your team in the office or on the road. Create a cloud-based collaboration point to organize and share content, schedules, and team conversations online. Manage projects and review progress wherever your mobile devices take you.
Trac is an alternative wiki and issue tracking system for software development projects. Trac uses a minimalistic approach to web-based software project management. Our mission is to help developers write great software while staying out of the way. Trac should impose as little as possible on a team's established development process and policies.
PBworks lets your team capture knowledge, share files, and manage projects. It tracks every change, and automatically notifies you and your team to keep everyone in the loop. PBworks is secure, reliable, and accessible from any computer or mobile device, so your team can use it anywhere they go. You can even use it with clients or partners. And because it's hosted, you don't need to download any software or manage any servers. Whatever you're working on, you can customize PBworks to make your team more productive.
SamePage is the enterprise-strength wiki solution that combines the best of wikis and blogs to effectively support, streamline, and manage collaborative team efforts. Our solution provides a wiki SamePageenvironment for teams to work together more effectively, making collaboration, communication, and sharing knowledge across project and geographies easier than ever. SamePage taps into the collective knowledge of the organization, taking full advantage of the vast network of social and organizational connections to leverage the value of collaborative work and turn it into real business results.
ThoughtFarmer is Social Intranet Software. It combines traditional intranet features — things like news, structured content, search and an employee directory — with social software features, like blogs, feeds, wikis and social networks.
The XWiki project offers both a generic platform for developing collaborative applications using the wiki paradigm and products developed on top of it. All XWiki software is developed in Java and under the LGPL open source license.
Tiki is the Free/Libre/Open Source Web Application with the most built-in features. So whatever feature you can imagine running in your browser window, chances are Tiki does it. Knowledge base: Wiki, FAQs, File gallery, Photo Album, Tags, Search, Kaltura video management integration, etc. Collaboration/Project Management: Wiki, Forums, Tasks, Permissions, Timeline, Proposals/Votes, Blog, Categories, Watch, etc. Publishing/web site: News articles, Blog, RSS, Newsletter, Maps, Themes, Banners, WYSIWYG, SEO, etc.
Wikispaces is a hosting service (sometimes called a wiki farm). Private wikis with advanced features for businesses, non-profits and educators are available for an annual fee.
DocuWiki started as an offspring of the MVGroup documentary forum in order to make the contents easier to find and index as well as browsing web pages.
PmWiki is a wiki-based system for collaborative creation and maintenance of websites. PmWiki pages look and act like normal web pages, except they have an "Edit" link that makes it easy to modify existing pages and add new pages into the website, using basic editing rules. You do not need to know or use any HTML or CSS. Page editing can be left open to the public or restricted to small groups of authors.
16 is a free hosted wiki. Provides professional wiki publishing, collaboration and communication solutions with lots of features