- Books And WritingPetaluma's Wednesday Book ClubBook club hosted by Copperfield's Books in Petaluma. Meets: Third Wednesday of every month, 10:30am.
- Social And MeetupsPhysics With FriendsA group to explore the intersections of science, physics, and spirituality.
- Science Tech And NaturePlatform Engineers SF & Bay AreaPlatform engineering community for internal tooling, platform teams, internal developer platforms, DevOps, and SRE topics.
- Sports And RecreationPlay in The BayPlay in The Bay Adult Leagues offering Basketball, Bocce, Bowling, Cornhole, Dodgeball, Football, Kickball, Softball, Spikeball, Volleyball.
- Arts And CraftsPleasanton Art LeagueNonprofit charitable organization serving artists in the Tri-Valley area, with general meetings, workshops, exhibits, an art circuit, and scholarships. Holds joint LAA/PAL general meetings with the Livermore Art Association.
- Music Dance And PerformancePleasanton Community Concert BandVolunteer community concert band performing free concerts around the Tri-Valley, including farmers' markets and the July 4 celebration.
- Social And MeetupsPleasanton Mothers Club (PMC)Social nonprofit for Tri-Valley moms with playgroups, moms' nights out, and an annual Mother's Day Brunch celebrating members.
- Science Tech And NaturePostgreSQL User Groups - Bay AreaBay Area PostgreSQL user-group coverage, consolidated to avoid separate chapter rows.
- Career And NetworkingProductTank SFVolunteer-organized product community for product managers, designers, developers, and other product people.
- Science Tech And NatureReact Native San FranciscoDeveloper community for React Native talks, discussions, and hack sessions.
- Books And WritingReading on the Avenue Book ClubYoga for a Healthy Mind and Body. Discover a soothing practice designed for all bodies and all levels. Gentle Yoga invites you to relax, restore, and feel better from the inside out.
- Sports And RecreationRedwood BowmenRedwood Bowmen Archery Club maintains a 35-acre archery range in the hills of Oakland, California.