YC Summer 2021 (S21)
391 companies Y Combinator lists for Summer 2021, with what each one builds. 26.2% of the tagged companies are AI, up from 22.9% in W21.
- Companies
- 391
- AI share
- 26.2%
- Top sector
- Engineering, Product and Design
- 29 companies
- Second
- Consumer Health and Wellness
- 16 companies
What’s in Summer 2021
Summer 2021 lists 391 companies so far (W21 had 335). The biggest themes by YC's tags are Fintech (81), Developer Tools (33), Marketplace (33), E-commerce (26) and Consumer Health Services (21). The largest sectors are Engineering, Product and Design, Consumer Health and Wellness, Finance and Accounting and Human Resources. 46.4% are based outside the US.
- Fintech · 81
- Developer Tools · 33
- Marketplace · 33
- E-commerce · 26
- Consumer Health Services · 21
See what YC asked founders to build · Breakout themes across batches
All Summer 2021 companies
391 companies
- Abatable
Carbon markets platform and solutions
Climate35London, England, United Kingdom - Abbot
Your Customer Success Co-Pilot
Sales5San Francisco, CA, USAInactive - Abhi
Abhi is Pakistan's 1st financial wellness platform focusing on…
Credit and Lending10Sindh, Pakistan - AbstraAI
Automate finance operations with Python and AI
Engineering, Product and Design18São Paulo, SP, Brazil - AdaptyvAI
We're building fully automated labs for protein engineering
Drug Discovery and Delivery25Lausanne, VD, Switzerland - AdniAI
The career network for healthcare workers
Healthcare5San Francisco, CA, USA - AdravisionAI
Automation for dental clinics and insurance companies.
Healthcare IT8Singapore, Singapore - Advantage Club
Global platform for employee engagement with rewards&flexible benefits
Human Resources220Gurugram, HR, India - Aer
Compound compliance: the central hub for meeting SEC obligations
Fintech18New York City, NY, USAAcquired - Affogato AIAI
Affogato AI — Your Agent for instant TikToks, Reels, and ads.
Engineering, Product and Design15San Francisco, CA, USA - Agapé
Feel close, even when apart. One meaningful conversation at a time.
Consumer Health and Wellness6Rochester, NY, USA - Ahazou
Podium for local businesses in Latam
Marketing27São Paulo, SP, Brazil - AI Tech Packs
Build factory ready tech packs in minutes.
Supply Chain and Logistics2Los Angeles, CA, USA - Akudo
India's first learning-focused neobank for teenagers
Payments20Bengaluru, KA, IndiaInactive - Akute Health
The medical record & infrastructure stack for digital health companies
Healthcare IT4Austin, TX, USA - Aleph
One source of truth for financial data.
Finance and Accounting30New York City, NY, USA - Aleph Solutions (Alephee)
We help automotive aftermarket brands to supply and sell parts online
Retail60Buenos Aires, CABA, Argentina - Algofi
Building the new financial system
Fintech7Inactive - AlgoUniversity
Building Job driven Virtual Tech University for India 🇮🇳
Education40Hyderabad, Telangana, India - AlgoViral
We help high-growth startups go viral on autopilot
Marketing5London, England, United Kingdom - Amenli
Offers insurance to customers in a convenient & transparent way
Insurance65Cairo, Cairo Governorate, Egypt - AnakinAI
One API to get clean data from any website for your AI agents at scale
Analytics70Austin, TX, USA - Ananya Health
Portable cryoablation to prevent cervical cancer
Medical Devices8San Francisco, CA, USA - Ancana
Marketplace for vacation home co-ownership, fully managed
Travel, Leisure and Tourism12Mérida, Yuc., Mexico
Source: Y Combinator’s public company directory. Each company links to its YC profile. See how we count and what YC asked founders to build.