# 50 leading startup incubators and accelerators in California

Tamtam tracks 72 startup incubators and accelerators headquartered in California. This list ranks the 50 largest by number of employees on LinkedIn, led by X, The Moonshot Factory, 500 Global and Founder Institute. Their median headcount is 92. Half of them were founded in 2016 or later. The most common headquarters are San Francisco (14), Palo Alto (4) and Berkeley (3).

This selection of large California-based startup incubators and accelerators includes established venture capital firms and organizations focused on fostering technological innovation. Companies such as X, The Moonshot Factory invent breakthrough technologies, while 500 Global and Plug and Play are venture capital firms connecting startups with investors and corporations. Founder Institute provides structured accelerator programs. Google for Startups connects emerging companies with resources and expertise.

The headquarters of these organizations are predominantly clustered in the San Francisco Bay Area, with several located in Palo Alto, San Francisco, Mountain View, and Sunnyvale. This geographic concentration suggests a strong regional focus on startup development and investment. A significant number of these companies were founded between 2006 and 2012, indicating a period of growth in the California startup ecosystem.

🇺🇸 California · 50 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [X, The Moonshot Factory](https://www.tamtam.ai/c/x-the-moonshot-factory) (x.company)<br>A moonshot factory inventing and launching breakthrough technologies to create a radically better world | Research Services | 🇺🇸 Mountain View | 3,149 |  |
| 2 | [500 Global](https://www.tamtam.ai/c/500-global) (500.co)<br>Global venture capital firm investing early in fast-growing technology companies worldwide, with a focus on unlocking long-term value and driving economic growth | Venture Capital and Private Equity Principals | 🇺🇸 Palo Alto | 2,719 | 2010 |
| 3 | [Founder Institute](https://www.tamtam.ai/c/founder-institute) (fi.co)<br>Provides structured accelerator programs and global networks to help founders turn ideas into fundable startups and scale businesses globally. | Professional Training and Coaching | 🇺🇸 Palo Alto | 1,725 | 2009 |
| 4 | [Plug and Play](https://www.tamtam.ai/c/plug-and-play) (plugandplaytechcenter.com)<br>global platform connecting startups, corporations, investors across multiple industries to foster innovation, investment, and collaboration worldwide. | Venture Capital and Private Equity Principals | 🇺🇸 Sunnyvale | 1,311 | 2006 |
| 5 | [Google for Startups](https://www.tamtam.ai/c/google-for-startups) (startup.google.com)<br>Connecting startups with people, products, and best practices to help them grow, scale, and solve important challenges. | Technology, Information and Internet | 🇺🇸 San Francisco | 1,141 |  |
| 6 | [ODF](https://www.tamtam.ai/c/odf) (joinodf.com)<br>Helping aspiring entrepreneurs start successful startups by providing guidance, resources, and a supportive community through a program focused on the exploration stage of company building | Technology, Information and Internet | 🇺🇸 San Francisco | 801 | 2019 |
| 7 | [Berkeley SkyDeck](https://www.tamtam.ai/c/berkeley-skydeck) (skydeck.berkeley.edu)<br>An official startup accelerator affiliated with UC Berkeley, providing consulting, resources, mentorship, and connections to help Cal entrepreneurs launch and grow transformative startups | Education Administration Programs | 🇺🇸 Berkeley | 624 | 2012 |
| 8 | [DFG Ventures](https://www.tamtam.ai/c/dfg-ventures)<br>A Los Angeles venture studio incubating, investing in, operating, and consulting scalable food businesses for the future | Food and Beverage Services | 🇺🇸 Los Angeles | 529 | 2020 |
| 9 | [Gold House](https://www.tamtam.ai/c/gold-house) (goldhouse.org)<br>Gold House empowers and elevates Asian Pacific creators and companies through innovative programs and platforms, investing in, uniting, and promoting cultural change | Holding Companies | 🇺🇸 Los Angeles | 514 | 2019 |
| 10 | [Technovation](https://www.tamtam.ai/c/technovation) (technovation.org)<br>Empowers girls globally in tech education, fostering leadership and problem-solving through mobile app coding for real-world issues with mentor support. | Civic and Social Organizations | 🇺🇸 San Francisco | 477 | 2006 |
| 11 | [Neo](https://www.tamtam.ai/c/neo) (neo.com)<br>Diverse mentorship community, startup accelerator, and VC fund helps tomorrow's tech leaders maximize their potential. | Technology, Information and Internet | 🇺🇸 San Francisco | 417 | 2017 |
| 12 | [StartX](https://www.tamtam.ai/c/startx-palo-alto) (web.startx.co)<br>A community of entrepreneurs and experts focused on collaboration and impact, providing support and resources without taking equity | Non-profit Organizations | 🇺🇸 Palo Alto | 390 | 2009 |
| 13 | [No Cap](https://www.tamtam.ai/c/no-cap) (nocap.so)<br>It assists founders and investors in expanding their networks and accelerating fundraising efforts through the use of AI technology. | Technology, Information and Internet | 🇺🇸 San Francisco | 389 | 2025 |
| 14 | [PeopleTech Partners](https://www.tamtam.ai/c/peopletech-partners) (peopletechpartners.com)<br>Connects world-class People leaders with technology to scale solutions for forward-thinking companies, providing critical insights and feedback to founders to fuel success. | Technology, Information and Internet | 🇺🇸 San Francisco | 345 | 2016 |
| 15 | [A2SV \| Africa to Silicon Valley](https://www.tamtam.ai/c/a2sv-africa-to-silicon-valley) (a2sv.org)<br>A nonprofit social enterprise upskilling young software engineers, connecting them to top tech internships, and guiding them to create digital solutions for Africa's challenges | Higher Education | 🇺🇸 Palo Alto | 333 | 2019 |
| 16 | [Addo AI](https://www.tamtam.ai/c/addo-ai) (addo.ai)<br>An artificial intelligence advisory and incubator, helping organizations leverage AI to improve services and tackle global challenges for a better world | IT Services and IT Consulting | 🇺🇸 San Francisco | 304 | 2017 |
| 17 | [Western Growers](https://www.tamtam.ai/c/western-growers) (wga.com)<br>Advocate for fruit, vegetable, and tree nut farmers by providing insurance, technology advancement, and regulatory support to ensure viability. | Non-profit Organizations | 🇺🇸 Irvine | 295 | 1926 |
| 18 | [Activate](https://www.tamtam.ai/c/activate-berkeley) (activate.org)<br>Activate empowers scientists through a fellowship program to launch startups addressing global challenges, ensuring their research is brought to market effectively | Non-profit Organizations | 🇺🇸 Berkeley | 284 | 2015 |
| 19 | [Silicon Catalyst](https://www.tamtam.ai/c/silicon-catalyst) (siliconcatalyst.com)<br>Incubator specializing in semiconductor solutions, providing startups with resources, partnerships, funding, and guidance to accelerate their journey from idea to production | Semiconductor Manufacturing | 🇺🇸 Santa Clara | 216 | 2015 |
| 20 | [Go Paladin](https://www.tamtam.ai/c/go-paladin) (gopaladin.org)<br>Non-profit organization supporting minority entrepreneurs in the tech industry by providing resources and connections to elevate their ideas | Civic and Social Organizations | 🇺🇸 Sunnyvale | 185 | 2016 |
| 21 | [Aximsoft](https://www.tamtam.ai/c/aximsoft) (aximsoft.com)<br>A technology firm incubating startups, bringing ideas to life through innovative products and solutions, pushing the limits of what's possible | IT Services and IT Consulting | 🇺🇸 San Ramon | 141 | 2005 |
| 22 | [Starburst](https://www.tamtam.ai/c/starburst-el-segundo) (starburst.aero)<br>Support aerospace and defense innovation through accelerators, consulting, and investment, connecting startups with corporate and government partners globally. | Business Consulting and Services | 🇺🇸 El Segundo | 123 | 2012 |
| 23 | [LAUNCH](https://www.tamtam.ai/c/launch-san-francisco) (launch.co)<br>An organization supporting founders and fostering innovation through events, podcasts, an incubator, and investing in promising startups that aim to change the world | Venture Capital and Private Equity Principals | 🇺🇸 San Francisco | 118 | 2010 |
| 24 | [Nobody Studios](https://www.tamtam.ai/c/nobody-studios) (nobodystudios.com)<br>Curates ideas, accelerates startup creation, and builds successful companies with a focus on innovation, people, and crowdfunding engagement. | Venture Capital and Private Equity Principals | 🇺🇸 Laguna Beach | 102 | 2020 |
| 25 | [Coeus Solutions](https://www.tamtam.ai/c/coeus-solutions) (coeus-solutions.com)<br>Specializing in web and mobile app development, Coeus Solutions offers customized solutions, virtual teams, and tech ventures for leading German brands | Technology, Information and Internet | 🇺🇸 California | 92 | 2003 |
| 26 | [AI Fund](https://www.tamtam.ai/c/ai-fund) (aifund.ai)<br>AI Fund is a venture capital firm founded by Dr Andrew Ng, supporting early-stage AI startups with funding, expertise, and resources for success | Venture Capital and Private Equity Principals | 🇺🇸 Mountain View | 92 | 2017 |
| 27 | [Shifamed](https://www.tamtam.ai/c/shifamed) (shifamed.com)<br>Specialized medtech innovation hub solving unmet needs through rapid execution, advanced technology, and collaboration to enhance clinical outcomes in healthcare | Medical Equipment Manufacturing | 🇺🇸 Campbell | 86 | 2008 |
| 28 | [500 Startups](https://www.tamtam.ai/c/500-startups) (500.co)<br>Venture capital firm investing in talented entrepreneurs globally, providing seed capital, accelerator programs, and support for startup growth and innovation ecosystems | Venture Capital and Private Equity Principals | 🇺🇸 San Francisco | 65 |  |
| 29 | [Portfolio T](https://www.tamtam.ai/c/portfolio-t) (portfoliot.com)<br>A global technology venture studio focusing on creating disruptive solutions across various industries and spearheading cognitive technologies for positive impact | Business Consulting and Services | 🇺🇸 Redwood City | 62 | 2022 |
| 30 | [The Hive](https://www.tamtam.ai/c/the-hive) (hivedata.com)<br>An AI fund and co-creation studio working with entrepreneurs and corporations to launch AI-based startups, focusing on enterprise and vertical industries Offices in Palo Alto, Sao Paolo, and Bangalore | Venture Capital and Private Equity Principals | 🇺🇸 Los Altos | 55 | 2012 |
| 31 | [Postindustria](https://www.tamtam.ai/c/postindustria) (postindustria.com)<br>Tech incubator developing new businesses and providing web/mobile development services Experienced team of 150+ engineers, project managers, and PhDs | IT Services and IT Consulting | 🇺🇸 Santa Monica | 51 | 2006 |
| 32 | [Platform](https://www.tamtam.ai/c/platform-san-francisco) (platformvc.ai)<br>This company offers a platform for diverse founders to create innovative ventures solving global challenges | Venture Capital and Private Equity Principals | 🇺🇸 San Francisco | 46 | 2020 |
| 33 | [i-GATE Innovation Hub](https://www.tamtam.ai/c/i-gate-innovation-hub) (igateihub.org)<br>Regional incubator specializing in growing technology startups by providing industry networking events, education programs, infrastructure, and access to scientists, investors, and corporate partners | Non-profit Organizations | 🇺🇸 Livermore | 40 | 2012 |
| 34 | [Nex Cubed](https://www.tamtam.ai/c/nex-cubed) (nex3.com)<br>A pre-seed venture accelerator supporting underrepresented founders and underserved communities, fostering diversity and inclusion in the startup ecosystem | Venture Capital and Private Equity Principals | 🇺🇸 San Francisco | 33 | 2016 |
| 35 | [SVG Ventures](https://www.tamtam.ai/c/svg-ventures) (svgventures.com)<br>An investment, technology, and advisory firm based in Silicon Valley that partners with organizations for strategy, innovation, and global expansion | Investment Banking | 🇺🇸 Los Gatos | 32 | 2010 |
| 36 | [Water, Energy and Technology (WET) Center](https://www.tamtam.ai/c/water-energy-and-technology-wet-center) (wetcenter.org)<br>The company supports water, energy, and ag-tech innovators through training, coaching, networking, and fostering an inclusive environment for entrepreneurs and community members | Business Consulting and Services | 🇺🇸 Fresno | 29 | 1996 |
| 37 | [Arise Ventures](https://www.tamtam.ai/c/arise-ventures) (ariseventures.vc)<br>A leading global early stage tech fund with a focus on women entrepreneurs, investing in diverse tech companies and helping them scale | Venture Capital and Private Equity Principals | 🇺🇸 San Francisco | 28 | 2020 |
| 38 | [Initio Capital](https://www.tamtam.ai/c/initio-capital) (initiocapital.com)<br>investment in early-stage companies, support through Venture Studio, community resources, accelerating growth, expanding access to strategic partners | Venture Capital and Private Equity Principals | 🇺🇸 San Francisco | 27 | 2024 |
| 39 | [ZGC Capital Corporation](https://www.tamtam.ai/c/zgc-capital-corporation) (zgccapital.com)<br>A Silicon Valley-based company fostering technology entrepreneurship through venture capital investment, community building, and global innovation exchanges in top innovation hubs | Venture Capital and Private Equity Principals | 🇺🇸 Santa Clara | 23 | 2014 |
| 40 | [Launch Factory](https://www.tamtam.ai/c/launch-factory) (launchfactory.com)<br>A San Diego, California-based startup studio provides founders with resources, seed capital, and an accelerator program to launch successful companies | Venture Capital and Private Equity Principals | 🇺🇸 San Diego | 18 | 2018 |
| 41 | [Berkeley Gateway Accelerator](https://www.tamtam.ai/c/berkeley-gateway-accelerator) (futurefrontier.vc)<br>Early-stage venture capital firm investing in exceptional entrepreneurs with proprietary screening software and a network for early access to high-quality startups | Venture Capital and Private Equity Principals | 🇺🇸 Berkeley | 17 | 2023 |
| 42 | [BRIIA® - The Intelligent Accelerator®](https://www.tamtam.ai/c/briia-the-intelligent-accelerator) (briia.io)<br>An accelerator program for tech startups, providing mentorship, resources, and community to help founders grow their companies quickly and efficiently | Software Development | 🇺🇸 San Ramon | 16 | 2017 |
| 43 | [Analytics Ventures](https://www.tamtam.ai/c/analytics-ventures) (analyticsventures.com)<br>A venture studio fund in San Diego focused on launching innovative ventures in Artificial Intelligence, partnering with entrepreneurs and researchers | Venture Capital and Private Equity Principals | 🇺🇸 San Diego | 12 | 2016 |
| 44 | [SKT Lab](https://www.tamtam.ai/c/skt-lab) (sktlab.com)<br>A global software product development company and incubator, focusing on building commercial grade software, launching products, fundraising, and global reach | Software Development | 🇺🇸 Redwood Shores | 12 | 2012 |
| 45 | [HealthLink at UC San Diego](https://www.tamtam.ai/c/healthlink-at-uc-san-diego) (healthlinkatucsd.webflow.io)<br>A company bringing together entrepreneurs and professionals to advance healthcare technologies, ultimately enhancing patient care and empowering the future of healthcare technology | Hospitals and Health Care | 🇺🇸 San Diego | 12 |  |
| 46 | [Draper Goren Holm](https://www.tamtam.ai/c/draper-goren-holm) (drapergorenholm.com)<br>Web3 venture studio and fund founded by Tim Draper, Alon Goren, and Josef Holm, focusing on incubating and accelerating early-stage startups globally Organizers of top blockchain conferences | Venture Capital and Private Equity Principals | 🇺🇸 Santa Monica | 11 | 2018 |
| 47 | [TNEpartners](https://www.tamtam.ai/c/tnepartners) (tnepartners.kr)<br>A global accelerator offering professional programs and a network to support startups in successfully launching products and securing funding | Business Consulting and Services | 🇺🇸 San Francisco | 8 | 2017 |
| 48 | [HawkTower](https://www.tamtam.ai/c/hawktower) (hawktower.com)<br>An emerging venture capital firm supporting entrepreneurs in underleveraged California, focusing on pre-seed and seed investments, and offering accelerator programs | Venture Capital and Private Equity Principals | 🇺🇸 Monterey County | 8 | 2023 |
| 49 | [Quandex](https://www.tamtam.ai/c/quandex) (quandex.com)<br>Technology incubator investing in early stage startups with a network of 400 IT professionals Offers expertise in product launch, development, and digital marketing strategies | IT Services and IT Consulting | 🇺🇸 Marina del Rey | 7 | 2011 |
| 50 | [ActionSpot Startup Studio](https://www.tamtam.ai/c/actionspot-startup-studio) (myactionspot.com)<br>A hybrid Product & Business Incubator focusing on Data Science, AI, Deep Learning, VR, and Cloud technologies, offering services to help startups develop and introduce new products to market quickly | Venture Capital and Private Equity Principals | 🇺🇸 San Jose | 7 | 2016 |

## 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 Nov 12, 2026.

## More company lists in California

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- [Multinational companies in California](https://www.tamtam.ai/l/multinational-companies-california) (2,591)
- [SaaS companies in California](https://www.tamtam.ai/l/saas-companies-california) (1,854)
- [Software Development companies in California](https://www.tamtam.ai/l/software-development-companies-california) (1,649)
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- [Venture capital and private equity firms in California](https://www.tamtam.ai/l/vc-and-private-equity-firms-california) (917)
- [Professional services firms in California](https://www.tamtam.ai/l/professional-services-firms-california) (880)
- [Companies with a mobile app in California](https://www.tamtam.ai/l/companies-with-mobile-app-california) (827)
- [Retail chains in California](https://www.tamtam.ai/l/retail-chains-california) (803)
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- [Healthcare providers in California](https://www.tamtam.ai/l/healthcare-providers-california) (569)
- [AI-native companies in California](https://www.tamtam.ai/l/ai-native-companies-california) (561)
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## The same list elsewhere in United States

- [Startup incubators and accelerators in the United States](https://www.tamtam.ai/l/incubators-and-accelerators-united-states) (213)
- [Startup incubators and accelerators in New York State](https://www.tamtam.ai/l/incubators-and-accelerators-new-york-state) (37)
- [Startup incubators and accelerators in New York](https://www.tamtam.ai/l/incubators-and-accelerators-new-york) (29)

## The same list elsewhere

- [Startup incubators and accelerators in the world](https://www.tamtam.ai/l/incubators-and-accelerators-in-the-world) (1,131)

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Source: https://www.tamtam.ai/l/incubators-and-accelerators-california