Liferay Social Office

Liferay Social Office is a product of Liferay, which already has the Liferay portal to its name. Social Office is its corporate social cooperation solution. The Liferay portal was launched by Brian Chan in the early 2000s. At the end of 2008, Liferay launched a variation on its portal with specific packaging for cooperative work: Liferay Social Office.

Its functions are very business orientated: activities feed, profiles/members, document management, calendar, events, groups, notifications, chat function, wiki, etc. In addition to a completely overhauled profile page, the latest version also integrates a contacts centre that allows users to either add contacts as connections or just follow their activities, and to send them private messages or even block them. Also worthy of note are the quality of the embedded Liferay chat function, and the microblogging function based on the use of #hashtags and @mentions.
The Community edition of Social Office (current version 1.5 is in beta) is distributed under the Affero GPL. A corporate version also exists, which includes vendor support.
On the technology side, Social Office uses the Liferay portal, in other words JEE architecture. It supports around a dozen databases and application servers.