Top Tech Startups in San Mateo, CA in 2026

Zerocater builds revolutionary corporate catering and cafeteria solutions employees love while saving companies millions of dollars as they transition to the hybrid workplace. With its Cloud Cafe, Hybrid Cafe, Managed Cafe, and Event Cafe products; Zerocater has built corporate cafeteria and office catering programs for companies of all sizes from growing startups to the Fortune 500. Thousands of companies like TikTok, Datadog, Airtable, and McKinsey choose Zerocater for the customized, consistent, and diverse meal experiences its products offer, while also reducing costs by giving companies the flexibility to only pay for the employees who come into the office. Zerocater currently offers its corporate cafeteria and office catering products in the San Francisco Bay Area, New York, Chicago, Los Angeles, Boston, Austin, Denver, Seattle, and Washington D.C. with additional markets in the U.S. and Canada coming online every month. Since completing YCombinator in Winter 2011, Zerocater has raised $38.5M from leading investors including Cleveland Avenue, Remus Capital, Romulus Capital, Struck Capital, SV Angel, Keith Rabois, Yuri Milner, Paul Buchheit, and Justin Kan. For more information visit zerocater.com and follow @Zerocater on Facebook, Instagram, Linkedin, and Twitter. Check out our company profile on Workatastartup: workatastartup.com/directory/171

We are solving a huge problem in financial services that has been lying unsolved for decades. All major payment systems (including wallets ) require two sided onboarding i.e. Payor and Payee need to onboard before they can transact. We have built a way to generate and transmit Digital Payments without onboarding the Payee/Recipient. This is huge in terms of bringing traditional paper and cash payments online. Add to that, we've figured out a clever way to monetize from both sides thereby changing the financial equation from Customers paying us to us paying our customers cash back from card fees! Our investors, whom we call our "believers," include Tim Draper, Adam Draper (Tim Draper's family), Naval Ravikabt through his AngelList Maiden Fund, co-founder of Intuit and more! Institutional investors include a top 4 bank and top 5 insurance company. Checkbook lets businesses move away from paper to deliver Digital Checks directly to a recipients email. This allows businesses to keep all their existing Accounts Payable (or Accounts Receivable processes) in place while moving to a completely online solution. All you need to send a check is the name and email of the recipient along with the amount you are sending. Recipients do not need to sign up for any service, download any app or pay any fees to receive payments. Digital Checks can be deposited and cashed online after instantly verifying banking credentials. No more paying high % based transaction fees on credit and debit cards or sharing sensitive bank account and routing numbers to payor.

Headquartered in New York City, Take-Two Interactive Software is a leading developer, publisher and marketer of interactive entertainment for consumers around the globe. Our company develops and publishes products principally through its wholly-owned labels Rockstar Games and 2K, as well as its Private Division label and Social Point, a leading developer of mobile games. Some of our largest hits include the Civilization series, NBA2K, Bioshock Infinite as well as many other titles throughout the years.

JetInsight's best-in-class quoting and fleet management software helps aircraft charter operators run and grow safer, more efficient, and more profitable businesses. We work with hundreds of operators across the US and are building the world's largest network of on-demand aircraft.

TrueFoundry is an Enterprise Platform as a service that enables companies to build, ship and govern Agentic AI applications securely, at scale and with reliability through its AI Gateway and Agentic Deployment platform. Its AI Gateway encompasses a combination of - LLM Gateway, MCP Gateway and Agent Gateway - enabling enterprises to manage, observe, and govern access to all components of a Gen AI Application from a single control plane while ensuring proper FinOps controls. Its Agentic Deployment platform enables organizations to deploy models on GPUs using best practices, run and scale AI agents, and host MCP servers - all within the same Kubernetes-native platform. It supports on-premise, multi-cloud or Hybrid installation for both the AI Gateway and deployment environments, offers data residency and ensures enterprise-grade compliance with SOC 2, HIPAA, EU AI Act and ITAR standards. Leading Fortune 1000 companies like Resmed, Siemens Healthineers, Automation Anywhere, Zscaler, Nvidia and others trust TrueFoundry to accelerate innovation and deliver AI at scale, with 10Bn + requests per month processed via its AI Gateway and more than 1000+ clusters managed by its Agentic deployment platform. TrueFoundry’s vision is to become the Central control plane for running Agentic AI at scale within enterprises and empowering it with intelligence so that the multi-agent systems become a self-sustaining ecosystem driving unparalleled speed and innovation for businesses. To learn more about TrueFoundry, visit truefoundry.com.

Dinari helps businesses distribute dShares, compliant 1:1 securities-backed tokens, and seamlessly offer exposure to US stocks, ETFs and other assets to your users around the globe. Dinari is an SEC registered transfer agent.

Create and publish online surveys in minutes, and view results graphically and in real time: SurveyMonkey provides free online questionnaire and survey software. Every day, 20 million questions are answered in our platform, whether it’s to get 10 employees’ opinions about a company barbecue or 10,000 consumers’ feedback about the next big product. That’s because we’ve built a platform that’s simple for a survey novice to use, but powerful enough for a pro. And we’re not stopping there. SurveyMonkey’s 700+ employees throughout North America, Europe and Asia Pacific are dedicated to powering the curious.

StoriiCare is an all in one software solution for care providers. StoriiCare is setting the gold standard for person-centred care. Our cloud based software is used by senior living communities, nursing homes and home care agencies, enabling families to connect with their loved ones and care staff to digitally record their care. Our platform includes a range of features from digital care plans, risk assessments and staff tasks, to music playlists and activities for care recipients. Families and care staff can collaborate from around the world to ensure care provided to their loved ones is truly person-centred.

Zenos is a highly funded next-gen AI + Robotics startup, with strong customer demand. We are delivering AI productivity to the physical world. We’re attacking a trillion dollar market opportunity with a world class team at lightning speed, and having a ton of fun while doing it. We are currently in stealth mode, but excited to launch with major announcements soon.