Atlassian announced today a new version 4 of its Confluence team collaboration software tool.
We covered version 2.9 here several years ago and since then they have been busy adding all sorts of features, including improving the wiki markup and editing tools, using Twitter-like @mentions to notify users with new content, a collection of macros and other automated content tools, and the ability to paste screenshots, videos and graphics directly into the editing tool.
Confluence is available for both Windows and Linux and both hosted and on-premises versions and was originally launched in 2009. It has a rich collection of add-on apps and plug-ins. Pricing remains the same as previous versions and there is a free 30-day evaluation trial too.