San Francisco Startups List

Map of the local innovation industry.
Meet some of the best and newest startups based in San Francisco.

27 private social networking Startups View all

Quality GPTs - Custom designed GPTs for businesses

QualityGPTs

GPTs, personalized for you.
Agency providing easy to use AI tools to small businesses.

Secret - mobile social media messaging private social networking

Secret

Be curious
It's a curious world. Discover yours. Secret lets you see what's going on with your friends, co-workers, and people in your city or campus. • Secret posts come from friends and people in your community, but you won't know who. • Join conversations and give your ...

Stellup - mobile private social networking Social Network

Stellup

Meet new people within your trusted networks
Stellup is the best way to meet new people within your trusted networks such as your university or company. We are building a fun yet constructive, productive and forward looking social networking mobile app. We are currently in stealth mode working hard on building ...

Blink - mobile social media messaging private social networking

Blink

Snapchat for Text Messaging
Blink lets users exchange texts, photos, videos, audio clips, and sketches that self-destruct.

Alum.ni - SaaS college recruiting private social networking alumni

Alum.ni

Leverage your networks
Alum.ni is disrupting how communities of trust engage online. We are creating an interactive space for alumni to tap their network, connect and help each other, capitalizing on their unique sense of trust. We’re essentially turning alumni networks into an exclusive ...

Voxer - mobile business productivity communications infrastructure private social networking

Voxer

Instant Voice. Anytime, Anywhere.
Voxer is an instant voice communications system for Android, iPhone, Windows Phone 8 and desktop, and can be used anywhere an employee is connected with WiFi or wireless data service on their smartphone, tablet or computer. The app functions like a push-to-talk ...

Jauntful - mobile online travel private social networking social travel

Jauntful

Shareable, printable guides to the cities you love.
When we travel for vacation or business, we’re all striving to have the perfect trip - best hotel, restaurants, sights, etc. and when people visit our current city, hometown, or somewhere we know well, we want them to have the best time ever. All of this hinges ...

DOWN by Bang With Friends - mobile social media private social networking online dating

DOWN by Bang With Friends

We help people strengthen relationships offline through honest interactions
DOWN uses social apps to help people strengthen relationships in the offline world through honest interactions. Based in San Francisco, our mobile and online development teams put together groundbreaking apps that are changing the way people discover relationships ...

Lowcost Email cheap flights alerts

NowBoarding ✈️

Invite-only mailing list.
We search the best weekend and long-haul flight deals so you can book before everyone else.

KITE - mobile SaaS marketplaces private social networking

KITE

Connecting Startups with Agencies & Brands
KITE is the world's first software-driven innovation marketplace. Our platform includes a robust database, collaboration tools and a marketplace to help enterprises discover, evaluate, rate and partner with emerging technology and emerging media companies. Currently, ...

Hornet - mobile social media private social networking gay & lesbian

Hornet

Gay Social Network App
Hornet is the premier gay social network app--where gay people meet one another and form meaningful relationships nearby and afar. Unlike straight people, the gay 2.5% of mankind need a "Gay GPS" to find their likes and interact safely. 2,400,000 users, 800,000 ...

Kontexa - email contact management private social networking professional networking

Kontexa

Unlock the power of your Inbox, address book and calendar
We're building a Semantic Inbox. We're starting with your address book. http://reconcil.me

Groupiter - photo sharing design private social networking creative industries

Groupiter

Collaboration for Creative Project Teams
Dropbox makes it easy to share. Groupiter makes it easy to talk about the things you share. By adding discussion to Dropbox—and integrating seamlessly with email and notifications—Groupiter helps anyone take their creative process to the next level.

Network - mobile productivity software private social networking professional networking

Network

The Smarter Way for Professionals to Connect (and Stay in Contact)
Network lets you turn your address book into a private mobile network: Network keeps you connected with your contacts, gives you a wallet to keep cards from everyone that you meet, and helps you find and connect with new people through a social platform. Whether ...

Invitation codes

The referral community
Invitation App is a social network where people post their referral codes and collect rewards on autopilot.

Squawk - mobile social media messaging private social networking

Squawk

Chat Gone Wild
Squawk is chat gone WILD. We took everything you aren’t supposed to do in a text messenger and put it all in one app. Send animated stickers, memes, selfies, drawings, filtered photos, GIFs, emoji, text and voice messages to individuals or groups of friends. Have ...

Spill - mobile social media ventures for good private social networking

Spill

A social 'Dear Abby' for sharing life advice.
A modern Dear Abby, where Millennials "spill" about life (confidentially) and share advice with one another. A TechStars '11 company & 2012 winner of the Global Social Venture Competition, Spill marries the intrigue of private personal issues with the human ...

Wonder - mobile application platforms private social networking self development

Wonder

Personal reputation platform, 360 feedback, "give to get" viral loop
It’s the great irony of our age: we’re more digitally connected than ever, yet feel increasingly lonely and isolated. Wonder addresses social pain, using technology consciously to help people deepen the relationships that matter. Our mobile app, launching in ...

Shoto - mobile photography photo sharing private social networking

Shoto

Discover unseen photos from friends and family
Shoto is an app available for iOS and Android that lets you find the unseen photos that you and your friends have collected from the moments you shared together. Shoto automatically finds all the photos that you and your friends have taken together at the same ...

Buhz - social media colleges private social networking university students

Buhz

The easiest way to make new friends at your campus
Buhz is campus micro-network that makes it easy for college students to make new friends at their own pace and stay up to date with whats going on around their campus. Upon providing a valid .edu users are taken to our campus explorer where they can swipe right ...

Prime - personal health lifestyle products private social networking mobile health

Prime

Health care coordination re-imagined
Sign up for our open beta! http://useprime.com/angellist <-- get a free year of Prime Plus 66 million Americans provide unpaid care for 130 million ill/aged family members. Taking care of an ill/aged family member is fundamentally taxing both emotionally and ...

Who@ - mobile big data contact management private social networking

Who@

The Ultimate Business Development Machine
A company's best relationships are stored in employee's smart phones & Exchange Server. It is siloed, unsearchable & inert. Combining this data w/our DataMarket, a freemium service, Who@ enables a new platform for professionals & enterprises to turn tribal knowledge ...

Kinwins - private social networking gamification quantified self lifestyle

Kinwins

Sims for real life
Kinwins is a mobile application that turns your whole life into a game. It's designed to motivate people to become the best version of themselves and bring yourself closer to your friends and family.

Pursuit - enterprise software private social networking professional networking interest graph

Pursuit

Improve group retention and engagement by easily collaborating on members' missions.
Pursuit is a better way for organizations to collaborate using email as a platform: - Discover and support members around their needs, haves and intentions. - Freely sub-group around what members share in common. - Keep everyone updated and engaged with a single ...

dotloop - SaaS real estate productivity software private social networking

dotloop

Collaboration platform where real estate pros make the home buying/selling process easy
dotloop is the leading online collaboration platform that over 750,000 real estate pros use to get deals done. As you know the process of buying or selling a home is nothing like buying a coffee at Starbucks. In a typical transaction, 9 different parties with ...

HER - mobile private social networking online dating gay & lesbian

HER

Helping women meet each other.
We are helping women meet each other, in communities built specifically for them. From mothers, to divorcees, to lesbians, we create discrete products for specific communities that have one thing in common: they are exclusively for women. Our first app, HER, ...

Whim - mobile marketplaces private social networking online dating

Whim

Concierge for your dating life
Created by a former Product Lead from OkCupid Labs and backed by 500 Startups, Whim is a mobile app that curates and coordinates first dates for this week. Going from a match to a date is now seamless, as we have eliminated the frustration of messaging, waiting, ...

FamilyLeaf - families photo sharing contact management private social networking

FamilyLeaf

Private networks for families. YC W12.
We're part of the "Facebook generation," and we've been connecting with our friends online forever. But global families have never connected well online. They've tried Yahoo Groups, social networks, or even making their own websites. But moms still email us photos ...

Nixter - mobile entertainment private social networking nightlife

Nixter

They will consider us as high concept pitch.
Nixter, as a two sided business, delivers solutions for both Party-people and Nightclubs. Nixter App allows party goers to see in the most beautiful way all upcoming events in san francisco as well as the most easy way to access to the guest list, purchase tickets ...

Nextdoor - digital media privacy private social networking

Nextdoor

The private social network for your neighborhood.

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