Social Software Roundup

Acquia
Acquia Network, Managed Cloud, Dev Cloud
Products, services and technical support for the open source Drupal social publishing system.

Atlassian
JIRA, Confluence, Studio
Issue and project tracking, online authoring and a hosted software development suite.

blueKiwi Software
Social Business Hub
Free edition for external community, 10 internal community managers, unlimited internal groups.

CubeTree
Basic, Professional, Enterprise
Hosted collaboration for internal social networks.

eGain
eGain 10
Customer service and contact center software for multichannel customer interaction hubs.

FatWire
Community Server, Gadget Server.
Web experience management.

IGLOO Software
Workplace, Marketplace Communities
Web publishing, document management, social networking, collaboration.

Inmagic
Presto
Create and manage social knowledge networks; identify enterprise content and subject matter experts.

Jive Software
SBS 4.0
Community software, collaboration software and social networking tools.

Lucid Imagination
LucidWorks Enterprise
Apache Solr/Lucene open source enterprise search.

Microsoft
SharePoint 2010
Business collaboration platform for the enterprise and the Web.

MindTouch
Cloud, Standard, Enterprise, Core
Enterprise wiki plus enterprise portal.