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51 leading online-only businesses in San Francisco

Tamtam tracks 51 online-only businesses headquartered in San Francisco. This list ranks all of them by number of employees on LinkedIn, led by Outlier, Twitch and Medium. Their median headcount is 956. Half of them were founded in 2015 or later.

馃嚭馃嚫 San Francisco51 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Outlieroutlier.ai

Innovative team seeking talented individuals to advance AI technology through writing and deep expertise in various fields Join us in shaping the future of AI

Technology, Information and Internet 馃嚭馃嚫 San Francisco 28,673 2023
2
Twitchtwitch.tv

A platform where diverse communities gather daily to support streamers, play beloved games, and connect with one another

Software Development 馃嚭馃嚫 San Francisco 14,817 2011
3
Mediumjob-boards.greenhouse.io

It is a storytelling platform that values great writing, empowers readers, and operates on a subscription model without relying on ads.

Internet Publishing 馃嚭馃嚫 San Francisco 9,929 2012
4
Remotasksremotasks.com

Participate in cutting-edge AI projects, shape the future of AI tools, and contribute to smarter, faster, and safer AI models Gain valuable professional experience

Information Services 馃嚭馃嚫 San Francisco 8,140 2017
5
Stitch Fixstitchfix.com

Leading online personal styling service using expert stylists and recommendation algorithms to deliver curated clothing selections from exclusive and national brands.

Retail Apparel and Fashion 馃嚭馃嚫 San Francisco 8,000 2011
6
Discorddiscord.com

A communication platform founded in 2015, connecting users through voice, video, and text in diverse communities without selling ads or user data

Software Development 馃嚭馃嚫 San Francisco 4,707 n/a
7
Clipboardclipboardworks.com

Platform connecting healthcare facilities and schools with local professionals for unfilled shifts, improving care and offering flexible, higher-paying work.

Internet Marketplace Platforms 馃嚭馃嚫 San Francisco 3,716 2016
8
The Millionaire Homemakerthemillionairehomemaker.com

Providing business consulting, education, resources, certification, and funding services to empower mothers to build successful financial empires while balancing work and family life

Consumer Services 馃嚭馃嚫 San Francisco 3,394 2011
9
Cambly Inc.cambly.com

The company offers an app connecting English learners with native speakers for affordable 1-on-1 practice sessions, benefiting both learners and tutors

E-Learning Providers 馃嚭馃嚫 San Francisco 3,089 n/a
10
adplist.orgadplist.org

Global platform connecting mentors and mentees to democratize mentorship, offering career guidance through a large verified community worldwide.

Software Development 馃嚭馃嚫 San Francisco 2,382 2021
11
Amazon Musicmusic.amazon.com

Immersive audio entertainment service connecting fans, artists, and creators through music, podcasts, and culture with curated playlists and exclusive content

Entertainment Providers 馃嚭馃嚫 San Francisco 2,239 n/a
12
topmate.iotopmate.io

Topmate facilitates personalized interactions by empowering professionals to manage incoming requests for advice or guidance, allowing them to share knowledge and wisdom seamlessly

Software Development 馃嚭馃嚫 San Francisco 2,070 2021
13
hims & hersbit.ly

A multi-specialty telehealth platform connecting consumers to licensed healthcare professionals for various conditions like sexual health, hair care, mental health, and more

Wellness and Fitness Services 馃嚭馃嚫 San Francisco 2,022 2017
14
Brexbrex.com

AI-powered spend platform empowering finance teams to make smarter decisions with corporate cards, business accounts, global payments, and intuitive software for tracking expenses

Financial Services 馃嚭馃嚫 San Francisco 1,888 2017
15
Springboardspringboard.com

Empowering lifelong learning through personalized educational experiences, industry-guided projects, and mentor support for success in the evolving economy

E-Learning Providers 馃嚭馃嚫 San Francisco 1,846 2013
16
Turoturo.com

Turo is a car sharing marketplace connecting guests with hosts worldwide, offering a variety of vehicles for any occasion

Technology, Information and Internet 馃嚭馃嚫 San Francisco 1,781 2009
17
OptimHireoptimhire.com

Facilitating global collaboration, OptimHire revolutionizes the way professionals, recruiters, and companies work together anytime, anywhere across time zones and countries

Human Resources Services 馃嚭馃嚫 San Francisco 1,673 2018
18
Fairefaire.com

Helping brands and retailers enhance the distinctiveness of local communities through empowerment and support

Software Development 馃嚭馃嚫 San Francisco 1,577 2017
19
Outschooloutschool.com

An innovative education platform offering engaging online classes for kids, taught live by experienced teachers, partnering with companies and schools

E-Learning Providers 馃嚭馃嚫 San Francisco 1,523 2015
20
LendingClublendingclub.com

Online platform providing unsecured personal installment loans to high-credit, high-income members, saving them money on credit costs.

Financial Services 馃嚭馃嚫 San Francisco 1,413 2006
21
Patreonpatreon.com

Supports creators in building communities, sharing exclusive work, and turning passions into sustainable businesses through direct fan support

Technology, Information and Internet 馃嚭馃嚫 San Francisco 1,263 2013
22
BYJU鈥橲 Learningbyjusfutureschool.com

Provider of live online education tailored for children, offering interactive learning experiences in various subjects

E-Learning Providers 馃嚭馃嚫 San Francisco 1,087 n/a
23
Fastfast.co

Streamlining online shopping with a one-click checkout process Hassle-free registration and speedy checkouts in under a minute

Technology, Information and Internet 馃嚭馃嚫 San Francisco 1,062 2019
24
Military.commilitary.com

This company provides news, benefits information, and resources for military members, veterans, and their families through a free membership platform and mobile apps

Online Audio and Video Media 馃嚭馃嚫 San Francisco 1,029 1999
25
Eventbriteeventbrite.com

A global platform where users can create and attend events aligned with their interests, fostering passion and community engagement

Software Development 馃嚭馃嚫 San Francisco 993 n/a
26
Tubitubitv.com

Free ad-supported streaming service offering personalized access to over 275,000 movies, TV episodes, originals, and nearly 250 FAST channels.

Entertainment Providers 馃嚭馃嚫 San Francisco 956 2014
27
Futurefuture.co

Customized personal training designed to meet the unique needs and schedule of each individual Tailored to fit your lifestyle and goals

Wellness and Fitness Services 馃嚭馃嚫 San Francisco 770 2017
28
Rooroo.vet

Innovative online platform empowering veterinary professionals by providing control over work placement and transforming animal healthcare workplace

Hospitals and Health Care 馃嚭馃嚫 San Francisco 755 2019
29
Contracontra.com

Platform connects users with independent creative talent and provides tools to start projects, facilitating commission-free hiring and creative work.

IT Services and IT Consulting 馃嚭馃嚫 San Francisco 747 2019
30
NerdWalletnerdwallet.com

Financial clarity for consumers and SMBs, remote-first inclusive workplace, career growth programs, pay equity reviews, employee resource groups, and corporate social responsibility initiatives

Consumer Services 馃嚭馃嚫 San Francisco 731 2009
31
Calmcalm.com

A leading mental wellness brand with the #1 app for sleep, meditation, and relaxation, helping users manage stress and live healthier lives globally

Mental Health Care 馃嚭馃嚫 San Francisco 730 2012
32
MusicCareersmusiccareers.co

Global music industry job site connecting professionals with opportunities worldwide, including remote, freelance, internships, and volunteer roles Easy job posting for employers

Technology, Information and Internet 馃嚭馃嚫 San Francisco 708 2021
33
Binance Exchangebinance.us

A regulated marketplace in the US offering trading of over 30 cryptocurrencies with USD and stablecoins, through an app, website, or APIs

Financial Services 馃嚭馃嚫 San Francisco 615 2019
34
Bleacher Reportbleacherreport.com

A global digital platform for millennial sports fans, creating content at the intersection of sports and culture Headquarters in San Francisco

Spectator Sports 馃嚭馃嚫 San Francisco 596 n/a
35
Varo Bankvaromoney.com

digital, mission-driven bank, FDIC insured. It provides mobile-first access to premium banking services, including quicker money access, high-yield savings, and automatic saving tools.

Banking 馃嚭馃嚫 San Francisco 580 2015
36
Platziplatzi.com

Online education platform developing AI and tech talent in Latin America, providing courses in AI, cybersecurity, programming, leadership, marketing, design, business.

E-Learning Providers 馃嚭馃嚫 San Francisco 515 2012
37
Grove Collaborativegrove.co

A sustainable online retailer offering vetted brands across cleaning, wellness, and everyday essentials, prioritizing environmental and social responsibility

Retail 馃嚭馃嚫 San Francisco 410 2012
38
Gametimegametime.co

The company provides last-minute tickets for popular events in sports, music, and theater in over 50 cities, making it easy to access experiences through mobile technology

Entertainment Providers 馃嚭馃嚫 San Francisco 314 2013
39
Speakspeak.com

AI language learning app focused on speaking skills, offering personalized content and real-time speech recognition to democratize access to high quality language education

Software Development 馃嚭馃嚫 San Francisco 295 n/a
40
Xoom, A PayPal Servicexoom.com

A leading provider of digital money transfer services enabling secure, fast, and cost-effective international transfers for consumers worldwide

Financial Services 馃嚭馃嚫 San Francisco 264 2001
41
Curatedcurated.com

Connects shoppers with passionate experts for personalized advice on outdoor sporting goods, offering a unique collaborative shopping experience.

Internet Marketplace Platforms 馃嚭馃嚫 San Francisco 220 n/a
42
craigslistcraigslist.org

Online platform for local classified ads enabling buying, selling, renting, hiring, sharing, meeting, swapping, discussing, and community connections.

Technology, Information and Internet 馃嚭馃嚫 San Francisco 94 1995
43
CoderPadcoderpad.io

Online platform for hiring developers confidently through gamified coding assessments & pair programming interviews, ensuring top talent acquisition and positive candidate experience

Software Development 馃嚭馃嚫 San Francisco 83 n/a
44
Tundra Wholesaletundra.com

Modern wholesale marketplace connecting buyers and suppliers for fee-free online transactions, selling US and Canadian brand products globally with automated processes

Wholesale 馃嚭馃嚫 San Francisco 39 2017
45
FundersClubfundersclub.com

An online venture capital platform connecting accredited investors with managed funds to fund pre-screened private companies, providing capital, advice, and professional networks

Venture Capital and Private Equity Principals 馃嚭馃嚫 San Francisco 37 2012
46
English Ninjasenglishninjas.com

Online platform connecting users with native English tutors for live video or audio chat sessions to improve English language skills

E-Learning Providers 馃嚭馃嚫 San Francisco 28 n/a
47
Channelschannels.app

Channels enhances customer service by integrating with platforms, providing essential customer data during calls, and offering various helpful features for businesses.

Telecommunications 馃嚭馃嚫 San Francisco 28 2014
48
Clearbitclearbit.com

It provides a platform for companies to create, capture, and convert demand from their ideal customers effectively and efficiently.

Technology, Information and Internet 馃嚭馃嚫 San Francisco 21 2015
49
Cleragetclera.com

AI career agent facilitating warm introductions to startups backed by venture capital firms such as a16z, Index Ventures, and Y Combinator.

Technology, Information and Internet 馃嚭馃嚫 San Francisco 19 2025
50
iOfferioffer.com

A revolutionary eCommerce marketplace connecting global users through interactive social commerce, offering a wide range of items for negotiation and trade

Technology, Information and Internet 馃嚭馃嚫 San Francisco 19 2002
51
OpenVCopenvc.app

Connect founders with over 5,000 investors for fundraising opportunities, while giving investors early access to top 1% deals through OpenVCapp

Venture Capital and Private Equity Principals 馃嚭馃嚫 San Francisco 8 2021

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

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