Scoutzie
Shut down
What they do:
Scoutzie is a curated community for the best mobile designers. If…
Quick facts:
HQ: San Francisco, CA, United States
Top Social Startups in California
This list has 170 startups and was last updated on Oct 15, 2026. 18 of them are hiring right now. Biggest hubs: San Francisco (151), Los Angeles (14), and San Diego (2). Largest teams: Reddit, Twitch, and OneSignal.
170 startupsPage 5 of 5
Awesometalk
Shut down
What they do:
Free video calling without the hassle.
Quick facts:
HQ: San Francisco, CA, United States
Threadable
Shut down
What they do:
Mailing lists 2.0. Threadable makes group email less noisy and more…
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HQ: San Francisco, CA, United States
GroupAhead
Shut down
What they do:
Improve communications with your group's own mobile app.
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HQ: San Francisco, CA, United States
Spoil
Shut down
What they do:
Spoil is gifting for the Snapchat generation.
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HQ: San Francisco, CA, United States
Streamup
Shut down
What they do:
Streamup is a live streaming community for music. We make it fun and…
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HQ: Los Angeles, CA, United States
Gameday
Shut down
What they do:
Play fantasy sports with friends on Facebook Messenger
Quick facts:
HQ: San Francisco, CA, United States
Greo
Shut down
What they do:
Greo is a mobile video app for conversations about current events.
Quick facts:
HQ: San Francisco, CA, United States
Storyboard
Shut down
What they do:
Social media management tool for Instagram and Snapchat
Quick facts:
HQ: San Francisco, CA, United States
Rhythmm
Shut down
What they do:
Read interesting conversations
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HQ: San Francisco, CA, United States
Allo
Shut down
What they do:
Allo is an app that helps neighboring families meet and help each…
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HQ: San Francisco, CA, United States
Figments
Shut down
What they do:
Building worlds at technological inflection points
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HQ: Los Angeles, CA, United States
Pantheon
Shut down
What they do:
A competitive community of the brightest students in the world
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HQ: San Francisco, CA, United States
Global Belly
Shut down
What they do:
Marketplace enabling social commerce for brands and content creators.
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HQ: San Francisco, CA, United States
Flowbo
Shut down
What they do:
Pipe for online businesses
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HQ: Los Angeles, CA, United States
Dittofeed
Shut down
What they do:
Open-source customer engagement & messaging automation
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HQ: Los Angeles, CA, United States
Crohnology (by Healthy Labs)
Shut down
What they do:
We turn Patients into Researchers.
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HQ: San Francisco, CA, United States
UpLabs
Shut down
What they do:
UpLabs is the #1 marketplace for designers & developers to find…
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HQ: San Francisco, CA, United States
Comradery
Shut down
What they do:
White-label Bookface for companies and communities!
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HQ: San Francisco, CA, United States
Jamiphy
Shut down
What they do:
TikTok for Musicians
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HQ: San Francisco, CA, United States
Pribbit
Shut down
What they do:
Like Twitter but you post others' status.
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HQ: Los Angeles, CA, United States
YC S10Early stage
Recurious
Shut down
What they do:
thesixtyone is Digg for new music, a social filter for the tsunami of indie creativity hitting the web. Like Digg, the homepage is community driven. Listeners…
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HQ: San Francisco, CA, United States
YC W09Early stage
Nambii
Shut down
What they do:
Nambii is an online dating service with iPhone applications that allow users to send and receive flirts with people around them.
Quick facts:
HQ: San Francisco, CA, United States
YC W09Early stage
Jam.gg (formerly Piepacker)
Shut down
What they do:
Jam.gg, play couch games online with friends
Quick facts:
HQ: San Francisco, CA, United States
FanHero
Shut down
Quick facts:
HQ: San Francisco, CA, United States
Meetyu
Shut down
Quick facts:
HQ: San Francisco, CA, United States
YC S07Early stage