Apple Blossom Users Group: San Jose. Offers a list of services, contact information, and links.
Bay Area Linux Events: A calendar of all San Francisco Bay Area Linux user group meetings and related events.
Bay Area Wireless Users Group: Promoting wireless network use for the Greater San Francisco Bay Area. Meeting and contact details.
BayLUG- Bay Area Linux Users Group: Meeting times, general information, and install fests.
BayXP: The San Francisco Bay Area XP Users Group.
Berkeley Macintosh Users Group: News, editorials, community information (including special interest groups), software, and links.
CalLUG: CalLUG is a Linux user group at the University of California, Berkeley. Providing various services to Linux users on campus and also participating in the larger Linux community.
Consortium of All Bay Area Linux (CABAL): Group of enthusiasts of the GNU/Linux operating system. Includes meeting times.
Diablo Valley Macintosh User Group: Meets in Walnut Creek. Offers its members a newsletter, online members list, and links.
Diablo Valley PC Users Group: San Francisco East Bay Area's largest computer user group
East Bay I.T. Group (ebig): Networking and development association of area technology companies, entrepreneurs, and workers. Sponsor and member listings, newsletter, job postings, and event calendar included.
International Macintosh Users Group: Multilingual group based in Silicon Valley, CA. Includes a calendar of events, guestbook, and membership information.
Lockheed Martin Macintosh Guild: Sunnyvale, CA. Mailing list, downloadable freeware and shareware, links, articles, and information available to Lockheed Martin employees.
MacFilmmakers: Silicon Valley, CA. A digital video user group offering a calendar, links, volunteers, and meeting information.
Macs of Marin: Special interest groups, guides for new Macintosh users, shopping, and meeting calendar.
Marin Java Discussion Group: Mailing list signup and meeting schedule. (Larkspur, California)
Mountain View/Silicon Valley Java Users Group: Includes mailing list and meeting information.
Napa Valley Macintosh Users Group: Includes members' web pages, newsletter, a disk of the month, and other resources.
Oakland Perl Mongers: user group for the Perl programming language. site provides basic info, offers Perl Quests, help learning, etc. invites participation.
San Leandro Mac User Group: Calendar, links, members, and newsletter.
SDForum Java Special Interest Group: Palo Alto. Group information, includes meeting information, archives, directions, mailing list signup, and resource collection.
Silicon Valley Java Users Group (SVJUG): Includes group information, meeting history, mailing list information, and job listings.
Silicon Valley Linux User Group: Meets in North San Jose. SVLUG directly serves Silicon Valley and the surrounding Bay Area. It also helps promote other LUGs anywhere in Northern and Central California.
Silicon Valley NUI: SVNUI is a local chapter of NetWare Users International, a not-for-profit organization for computer networking end users, administrators, and industry professionals using Novell products, services, and technologies. SVNUI's members hail from Santa Clara and San Mateo Counties, as well as adjacent areas in Alameda, Santa Cruz, and Monterey Counties.
Silicon Valley Palm Users Group: Meeting information, guest speakers, and past notes offered.
South Bay All Computers Enthusiasts: Non-profit organization of computer users of all experience levels which meets twice a month in Rolling Hills, California. Provides support for new hardware, software, and operating systems.
SVBUG: Silicon Valley BSD User Group
The Association of A32 Users: Santa Clara, CA. Meeting schedules, minutes, calendar, articles, and classified ads.
TOGA - The Other Group of Amigoids: Provides members list and a schedule of upcoming meetings held in Campbell.
Tri-Valley Macintosh User Group: Livermore, CA. Newsletter, special interest groups, and membership information.