What they do:
WeWeb is the AI app builder your IT team will approve.
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Y Combinator Winter 2021 Startups
This list has 335 startups and was last updated on Oct 15, 2026. 77 of them are hiring right now. Biggest hubs: San Francisco (85), New York (45), and Bengaluru (17). Largest teams: Redcliffe Lifetech, Zepto, and Tractian.
335 startupsPage 5 of 10
What they do:
Providing clean, safe, virus free air for homes, buildings and cars
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HQ: Hong Kong
What they do:
Bringing the joy of cycling to millions of Indians
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Compose.ai
Hiring
What they do:
Cut your writing time by 40% with AI-powered autocomplete
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HQ: Carlsbad, CA, United States
What they do:
The modern, open source, self-hosted AI customer support platform
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HQ: San Francisco, CA, United States
What they do:
Marketplace for construction machines
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What they do:
Dermatology telehealth app for LatAm
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HQ: Zapopan, Mexico
Haystack
Hiring
What they do:
Delivery Analytics for Software Teams
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HQ: San Francisco, CA, United States
What they do:
Global Card Issuing and Payment Processing Engine
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What they do:
We make satellites to image everywhere on Earth, every 15 minutes
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HQ: Glasgow, United Kingdom
What they do:
Life's better without allergies
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HQ: New York, NY, United States
What they do:
AI-powered Corporate Training: Faster, Smarter, and More Effective
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What they do:
Procure the right software 5x faster
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HQ: San Francisco, CA, United States
What they do:
Tech-enabled fulfillment provider in the Middle East & Africa
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Venu AI
Hiring
What they do:
Meet qualified leads in person by automating conference production
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HQ: San Francisco, CA, United States
What they do:
Connecting top Middle East talent to global tech jobs
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HQ: San Francisco, CA, United States
What they do:
GreaseBoss verifes industrial machinery is greased correctly
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HQ: Sunshine Coast, Australia
What they do:
Data-driven embedded Financial Services for Gig Workers
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What they do:
Government-funded online addiction treatment
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HQ: San Diego, CA, United States
What they do:
Desktop DNA Printer. The Nespresso Machine for DNA.
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HQ: Graz, Austria
What they do:
Healthy organic food that creates a positive impact
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Smartcuts
Hiring
What they do:
Chrome extension to turn clicks & keystrokes into no-code automations
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HQ: New York, NY, United States
What they do:
No-code Browser RPA
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HQ: London, United Kingdom
Pangea.app
Hiring
What they do:
Hire Fractional Marketing + Design Talent
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HQ: New York, NY, United States
What they do:
AI workers that book, scribe, code, interpret, and answer clinicians
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HQ: San Francisco, CA, United States
What they do:
Investing app that teaches you how to invest
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HQ: New York, NY, United States
What they do:
Affirm for general contractors
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HQ: Birmingham, United Kingdom
What they do:
Cross border Payments infrastructure for internet businesses and…
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What they do:
Integrated, high touch healthcare — at scale
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HQ: New York, NY, United States
Rulebricks
Hiring
What they do:
Add powerful decision-making capabilities to any automated workflow.
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HQ: San Francisco, CA, United States
What they do:
No-code workflow tool
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HQ: Houston, TX, United States
What they do:
Recover from any outage in 10 minutes or less.
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HQ: Durham, NC, United States
What they do:
Open-source framework for building serverless applications
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HQ: Zagreb, Croatia
What they do:
At-home oral health testing, coaching & care
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HQ: San Francisco, CA, United States
What they do:
World's fastest and most optimal route optimization engine
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HQ: Ontario, CA, United States
What they do:
Genetic Medicine with Small Molecules
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HQ: San Francisco, CA, United States