Oakland Perl Mongers
- user group for the Perl programming language. site provides basic info, offers Perl Quests, help learning, etc. invites participation.
- http://www.metaart.org/opug/

The Association of A32 Users
- Santa Clara, CA. Meeting schedules, minutes, calendar, articles, and classified ads.
- http://web.mac.com/rlbrown/iWeb/A32/Main.html

Macs of Marin
- Special interest groups, guides for new Macintosh users, shopping, and meeting calendar.
- http://www.macsofmarin.org/

BayXP
- The San Francisco Bay Area XP Users Group.
- http://www.jera.com/bayxp/

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.
- http://www.ocf.berkeley.edu/~linux/

Silicon Valley Java Users Group (SVJUG)
- Includes group information, meeting history, mailing list information, and job listings.
- https://svjug.dev.java.net/

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.
- http://www.ebig.org/

San Leandro Mac User Group
- Calendar, links, members, and newsletter.
- http://www.slmug.org/

Mountain View/Silicon Valley Java Users Group
- Includes mailing list and meeting information.
- http://sandbox.xerox.com/mtvjug/

Lockheed Martin Macintosh Guild
- Sunnyvale, CA. Mailing list, downloadable freeware and shareware, links, articles, and information available to Lockheed Martin employees.
- http://mac.excaliburworld.com/

TOGA - The Other Group of Amigoids
- Provides members list and a schedule of upcoming meetings held in Campbell.
- http://www.calweb.com/~rabel1/

Diablo Valley Macintosh User Group
- Meets in Walnut Creek. Offers its members a newsletter, online members list, and links.
- http://www.dvmug.org/index.html

Marin Java Discussion Group
- Mailing list signup and meeting schedule. (Larkspur, California)
- http://www.jera.com/marinjava/

Napa Valley Macintosh Users Group
- Includes members' web pages, newsletter, a disk of the month, and other resources.
- http://homepage.mac.com/napamug/

Berkeley Macintosh Users Group
- News, editorials, community information (including special interest groups), software, and links.
- http://www.planetmug.org/

Tri-Valley Macintosh User Group
- Livermore, CA. Newsletter, special interest groups, and membership information.
- http://www.clubtmug.com/

SDForum Java Special Interest Group
- Palo Alto. Group information, includes meeting information, archives, directions, mailing list signup, and resource collection.
- http://www.sdforum.org/sigs/java

Consortium of All Bay Area Linux (CABAL)
- Group of enthusiasts of the GNU/Linux operating system. Includes meeting times.
- http://www.linuxmafia.com/cabal/

BayLUG- Bay Area Linux Users Group
- Meeting times, general information, and install fests.
- http://www.balug.org/

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.
- http://www.svlug.org/

Bay Area Linux Events
- A calendar of all San Francisco Bay Area Linux user group meetings and related events.
- http://linuxmafia.com/bale/

MacFilmmakers
- Silicon Valley, CA. A digital video user group offering a calendar, links, volunteers, and meeting information.
- http://www.macfilmmakers.com/

International Macintosh Users Group
- Multilingual group based in Silicon Valley, CA. Includes a calendar of events, guestbook, and membership information.
- http://www.imug.org/

SVBUG
- Silicon Valley BSD User Group
- http://www.svbug.com/

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.
- http://www.sbace.com/

Silicon Valley Palm Users Group
- Meeting information, guest speakers, and past notes offered.
- http://www.svpug.com/

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 a
- http://www.nui.net/svnui/

Diablo Valley PC Users Group
- San Francisco East Bay Area's largest computer user group
- http://www.dvpc.org/

Bay Area Wireless Users Group
- Promoting wireless network use for the Greater San Francisco Bay Area. Meeting and contact details.
- http://www.bawug.org/