- Sports Wellness And RecreationBay Area Cricket AllianceRegional cricket league/community organizing cricket competition and clubs across the Bay Area.
- Sports Wellness And RecreationBay Area Disc AssociationThe Bay Area Disc Association is a nonprofit that runs youth and adult ultimate frisbee leagues, tournaments, summer camps, clinics, and events.
- Outdoors And AdventureBay Area DragonsDragon boat racing team and nonprofit foundation offering paddling activities and free lessons.
- Business And CareerBay Area Editors’ ForumProfessional community and directory for editors in the San Francisco Bay Area.
- Social And MeetupsBay Area Equestrian ClubA community for horse enthusiasts in the Bay Area, offering educational events, trail rides, and social gatherings.
- Science Tech And CodingBay Area GamesCommunity-developed resource and events hub for aspiring game developers and local game enthusiasts in the Bay Area.
- Science Tech And CodingBay Area Gardeners AssociationA community-driven group for gardening enthusiasts to exchange seeds, plants, and sustainable gardening practices.
- Science Tech And CodingBay Area Garden Railway SocietyGarden railway club/community for large-scale outdoor model railroading enthusiasts.
- Science Tech And CodingBay Area Haskell & Functional Programming User GroupTalks and events for Haskell, type theory, functional programming, Scala, Nix, and related topics.
- Science Tech And CodingBay Area Linux Users Group (BALUG)Bay Area Linux user group with monthly meetings and mailing lists around Linux and open-source technology.
- Games And TabletopBay Area Mahjong MeetupThe Bay Area Mahjong Meetup is looking for players and hosts in the San Francisco bay area; players of all skill levels are welcome.
- Social And MeetupsBay Area MashersBAM is a non-profit homebrewing club with a membership based in the Northern California East Bay (Oakland, Berkeley area) that was formed in June 1990.
- Sports Wellness And RecreationBay Area Media Softball LeagueBay Area Media Softball League.
- Games And TabletopBay Area Mustang AssociationClub for vintage and late-model Mustang owners with monthly meetings, cruises, car shows, tech sessions, the Ponies and Snakes show, and charity fundraising. Monthly newsletter The Roundup.
- Nature Gardens And FarmsBay Area Mycological SocietyThe Bay Area Mycological Society (BAMS), established in 2006, is dedicated to the art and science of mushrooms. We hold meetings at UC Berkeley.
- Culture And LanguageBay Area Nepalese Community in Fremont (BANCF)BANCF is formed exclusively to save our identity, to bond Nepali communities and to thrive Nepali language and culture by educating children
- Sports Wellness And RecreationBay Area Older Adults HikesBay Area Older Adults (BAO) was founded by Anne Ferguson in 2008 out of her love for her dear grandparents, who passed away a few years earlier. At BAO, we are inspired by our desire to bring joy to and improve the lives of older adults. BAO is Anne’s humble offering to the older adult community in the name of her grandparents, Jacqueline and Jean–Paul Latil.
- Sports Wellness And RecreationBay Area Orienteering ClubBAOC organizes orienteering events throughout the San Francisco Bay Area, offering a mix of physical and mental challenges.
- Games And TabletopBay Area Pinball AssociationOrganizing competitive pinball leagues and tournaments throughout the San Francisco Bay Area.
- Games And TabletopBay Area Poker MeetupMember-hosted poker meetup where members can schedule and host their own games, currently running weekly no-limit hold'em cash games and tournaments.
- Music Dance And PerformanceBay Area Rainbow SymphonyLGBTQ+ and allied orchestra community serving musicians and audiences in the Bay Area.
- Outdoors And AdventureBay Area Ridge Trail CouncilTo plan, promote and sustain a connected hiking, cycling, and equestrian trail on the ridgelines around San Francisco Bay—linking people, parks and open space for today and future generations.
- Science Tech And CodingBay Area R Users GroupBay Area R users community for practitioners to exchange knowledge and spur adoption of R.
- Science Tech And CodingBay Area SAS Users GroupLocal users group for programmers and users of SAS software in the San Francisco Bay Area.
- Science Tech And CodingBay Area ScalaBay Area Scala community with tech talks, book clubs, and hackathons for Scala and functional programming.