- Science Tech And CodingSF Bay ACMBay Area chapter/community of the Association for Computing Machinery with talks and professional computing events.
- Science Tech And CodingSF Bay Area Ruby MeetupRecurring Ruby and Rails meetup community with talks and speaker history.
- Science Tech And CodingSF Builders CollectiveBringing together the hottest tech for the community. Hear from great speakers, learn how to implement new tools, and show off what you're building with them!
- Games And TabletopSF Chess ClubEvery Monday Night Chess with San Francisco Chess Club! ( 7 - 9:30 PM~) @ the back room of the bird in Hayes / After work bar. All levels welcome for some fun casual chess.
- Science Tech And CodingSF Civic TechVolunteer group of developers, designers, data geeks, and civic activists using creative technology for civic and social problems.
- Social And MeetupsSF Dads GroupBay Area dads’ social/support group for fathers to meet, socialize, and connect around family life.
- Science Tech And CodingSF Data and AI EngineeringSan Francisco data and AI engineering community focused on distributed computing, databases, data lakes, and production AI systems.
- Science Tech And CodingSF Game DevelopmentLarge game-development meetup with monthly technical talks and free community-focused events.
- Games And TabletopSF Go ClubThe San Francisco Go Club was founded in the 1930s, making it the oldest Go club in North America. We are a community of enthusiasts who love to explore this beautiful game, improve our skills, and share Go with new players throughout the Bay Area.
- Science Tech And CodingSFHTML5San Francisco HTML5 developer group with presentations on web technologies.
- Sports Wellness And RecreationSFM Run ClubWelcome to the San Francisco Marathon Run Club Hub! This is the go-to space for runners looking to connect with local run clubs and for run clubs eager to engage with the San Francisco Marathon. Whether you're a solo runner searching for training partners, a club seeking new members, or a group looking to collaborate with the race, this is where the SF running community comes together.
- Sports Wellness And RecreationSF Muslim Running Club
- Science Tech And CodingSFNodeCommunity-run Node.js meetup in San Francisco.
- Science Tech And CodingSF PythonCommunity-run Python meetup organizing developer-focused events for the Bay Area Python community.
- Sports Wellness And RecreationSF Tennis ClubTennis League Network is an active tennis community of players with 18+ years of service and over 564,057 matches played nationwide. It connects players with San Francisco tennis instructors to provide on-court tennis lessons and offers various leagues and tournaments.
- Sports Wellness And RecreationSF Tsunami AquaticsInclusive U.S. Masters Swimming club for LGBTQ+ swimmers and allies, including swim and synchronized swim.
- Sports Wellness And RecreationSF Urban Trail RunnersThere are so many hiking groups, but I wanted to start a group for runners like me that prefer to run the trails than the streets.
- Sports Wellness And RecreationSF Volleyball ClubSan Francisco Volleyball (SFVB) is a sports organization that provides volleyball opportunities for the community. It offers various programs, including leagues, clinics, and open gym sessions for players of different skill levels.
- Social And MeetupsSHACK15SHACK15 is the place where entrepreneurs, innovators and changemakers come together to share ideas and shape our future. Join our vibrant community based out of the iconic Ferry Building in San Francisco.
- Books And WritingSilent Book ClubSilent Book Club is a global community of readers, with more than 2000 chapters in 60+ countries. Members gather in person and online to read together in quiet camaraderie. At Silent Book Club, there's no assigned reading.
- Sports Wellness And RecreationSilicone Valley Hash House Harriers (SVH3)Self-described 'drinking club with a running problem'; 3-5 mile run/walk trails set anywhere from the South Bay to the mid-Peninsula, with beer checks and social circle afterward.
- Sports Wellness And RecreationSilicon Valley Disc Golf ClubNonprofit club formed in 1998 that maintains free-play disc golf courses in Santa Clara County and runs tournaments including the PDGA-sanctioned Silicon Valley Classic at Kelley Park.
- Business And CareerSilicon Valley Entrepreneurs & Startups (SVE)Silicon Valley's longest-running startup community with 36,000+ founders; since 2008 a launchpad for thousands of founders, now focused on empowering founders who build with AI.
- Science Tech And CodingSilicon Valley RoboticsMember-led robotics association connecting startups, researchers, manufacturers, investors, and robotics professionals.
- Sports Wellness And RecreationSilicon Valley Roller DerbyFlat track roller derby league founded in 2007 (formerly Silicon Valley Roller Girls), a WFTDA member league with multiple teams; always recruiting new skaters, referees, NSOs, announcers and volunteers - no experience needed.