What they do:
The lifestyle medicine layer for clinicians.
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HQ: San Francisco, CA, United States
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 6 of 10
What they do:
Autonomous street sweeping as a service by retro-fitting vehicles
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HQ: San Francisco, CA, United States
What they do:
Building the next generation of visual media
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HQ: New York, NY, United States
What they do:
Helping a billion people build their dream career
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HQ: San Francisco, CA, United States
What they do:
Workflows to empower employees to spend while finance stay in control
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HQ: Mexico City, Mexico
What they do:
Software for procurement departments to find suppliers 10x faster
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What they do:
The multicurrency account and card for Brazilians
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HQ: London, United Kingdom
What they do:
The super app for pets
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HQ: London, United Kingdom
What they do:
Better, faster tech vendor research
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HQ: Los Angeles, CA, United States
What they do:
AI-Native Restaurant POS
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HQ: San Francisco, CA, United States
What they do:
Ramp for Indian Businesses - UPI Wallets for Employee Expenses
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What they do:
Continuous Documentation To End Documentation Rot
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What they do:
AI Assistant for Customer Support
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HQ: Bandung, Indonesia
What they do:
We treat women with Polycystic Ovary Syndrome in India
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HQ: India
What they do:
Sell beyond the store.
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HQ: San Francisco, CA, United States
What they do:
The Best Way to Sign Contracts Since Handshakes. Roger that.
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HQ: New York, NY, United States
What they do:
LinkedIn content consultancy and scheduling platform for busy founders
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HQ: San Diego, CA, United States
What they do:
The notification inbox for web/mobile applications.
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What they do:
Mobile app and coaching program that helps employees sleep better
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HQ: San Francisco, CA, United States
What they do:
PowerRouter helps sales teams with lead routing in Salesforce
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HQ: Austin, TX, United States
What they do:
Clinical skincare tested on diverse skin, now available in Sephora.
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HQ: San Francisco, CA, United States
What they do:
Analytics, built for the trades.
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HQ: San Francisco, CA, United States
What they do:
Communication and publishing tools for scientists
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What they do:
A Nouns DAO governance client
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What they do:
Creating a New Class of Drugs to Address Incurable Autoimmune Diseases
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HQ: Irvine, CA, United States
What they do:
Code review for DevOps tasks
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What they do:
AI that keeps complex construction projects on schedule.
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HQ: Seoul, South Korea
What they do:
Bioengineered kidneys for patients with kidney failure
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HQ: San Diego, CA, United States
What they do:
Subscriptions for neighborhood businesses
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HQ: San Francisco, CA, United States
What they do:
Marketplace for small business M&A
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HQ: San Francisco, CA, United States
What they do:
AI to track and analyze public policy
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HQ: San Francisco, CA, United States
What they do:
Visual, collaborative financial modeling software
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HQ: Omaha, NE, United States
What they do:
The highest-accuracy global weather data from low-cost flat satellites
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HQ: Orem, UT, United States
What they do:
The Operating System for Maritime
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HQ: Singapore
What they do:
Neurostimulation implant to restore hearing & speech understanding
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HQ: San Francisco, CA, United States
What they do:
Realistic virtual video studio to record and stream from your browser
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HQ: Denver, CO, United States