Find all registered Apple computer user groups by state or within 100 miles of any given ZIP code.
  http://www.apple.com/usergroups/find/  [Site Details]

Online Community for users of Paint Shop Pro.
  http://www.pspug.org  [Site Details]

Conference details, online publications, group organization and contacts for Oracle applications users; requires membership to access publications.
  http://www.oaug.org  [Site Details]

Provide a forum of support and technology to Web professionals of all levels and professions.
  http://www.adobe.com/cfusion/usergroups/index.cfm  [Site Details]

The following list of user groups are organized by country. Some hold monthly or quarterly meetings, while others maintain active mailing lists.
  http://www.linux.org/groups/  [Site Details]

An alliance developed to support established user groups. Share information and interact frequently with groups.
  http://ug.oreilly.com  [Site Details]

Find a user group in your area to discuss and share information on a variety of technology topics surrounding Microsoft products and technologies.
  http://www.microsoft.com/communities/usergroups/default.mspx  [Site Details]