A 100% native force.com app for Salesforce Chatter admins. Released free under BSD license.
GroupMaster uses batch apex to merge or copy even the largest Chatter groups, preserving membership, posts, comments, and likes (including createddates and createdbys). Mass add users from any source group, role, or profile to any destination group. The ultimate Group management tool for any Chatter admin!
The resources/ dir is intended to be zipped and loaded into Salesforce as a static resource; it is included here unzipped for easier browsing.
GroupMaster is available free on the AppExchange!
by Jonathan Hersh.
Copyright 2011 salesforce.com.