Confluence - Enterprise Wiki

Confluence is enterprise-class WIKI solution.

A wiki is a simple, practical web application
that makes it easy for you and your
teammates to collaborate and manage
knowledge. With a wiki, your team can:
• share, manage, and comment on
information
• easily make edits that update instantly
• track every change or rollback to a
previous version
• access content securely anytime from
anywhere through a browser
• find information quickly, unlike emails.

Developed and promoted by Atlassian and costs around $1200 for minmum license

Features:

Pages: Easy to create, easy to edit, easy to organise.
Spaces: Discrete areas for different groups or projects.
News: Share timely information in notices, bulletins, and blogs.
Mail: Archive and index team email conversations.
Attachments: Attach, track and search all file types.
Comments: Turn any page into a team discussion.
Organisation: Flexible page structures, cross reference, index,
search…hierarchify!
Search: Everything is searchable. Pages, attachments,
comments…everything.
Images: Display images, diagrams, mind maps and more.
Links: Connect, cross-reference.
Administration: Powerful, simple admin. No geniuses required.
Security: Enterprise-grade permissioning and control.
Openness: Plays well with others via SOAP and XML-RPC.
Integration: From daily workflow tools to enterprise systems,
customise and fit your needs.
RSS: Produce and consume RSS newsfeeds.
Plugins: Just a wiki? No, an application platform.
Polish: Not just a pretty face. It works well. It feels right.