All 83 companies in Y Combinator's Summer 2012 batch, with team size, growth, open roles and funding.
Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.
| Company | Team | 6 mo | 12 mo | Open roles | Total raised | Last round |
|---|---|---|---|---|---|---|
Marketplace for grocery delivery and pickup | 25,483 | +2% | +5% | 85 | $2.9B | Private equity$232M, Nov 2021 |
Buy, sell, and manage cryptocurrencies. | 6,979 | −5% | −6% | 91 | ||
The easiest way to automate your work. | 1,530 | +3% | +8% | 12 | $1.4M | Undisclosed round$1.4M, Apr 2024 |
Unlocking the power of biotech with modern software for modern science | 813 | +3% | +3% | 4 | $412M | Series F$100M, Nov 2021 |
Communication app for K-8 teachers, kids, and families | 523 | +4% | +1% | 1 | $191M | Undisclosed round$125M, Apr 2024 |
The platform that powers technology in the classroom. | 374 | +5% | +17% | 0 | $43.3M | Series B$30M, Dec 2014 |
Pioneer in immersive code education. Acquired by Zovio (NASDAQ: ZVO)… | 334 | −3% | −2% | 0 | SeedAug 2012 | |
Marketplace connecting consumers to financial advisors | 282 | +2% | +1% | 2 | $161M | Secondary$110M, Aug 2021 |
Private sector Healthcare.gov. | 255 | +2% | +3% | 2 | $6.6M | Undisclosed round$6.6M, Feb 2017 |
The best way to launch, manage and measure social impact programs | 246 | +9% | +7% | 7 | $156M | Undisclosed round$91.5M, Aug 2024 |
Talent Acquisition Suite that combines ATS + Talent CRM | 206 | +6% | +9% | 0 | $123M | Private equity$50M, Jan 2022 |
Voice AI Agents for customer engagement, including WhatsApp, SMS &… | 195 | −4% | 1 | $2M | Seed$1.8M, Dec 2012 | |
Secure Collaboration for Technical Teams | 169 | +5% | +8% | 8 | $73.5M | Series B$50M, Jun 2019 |
Make the world happier. | 153 | −1% | −2% | 0 | $2.8M | Seed$2.8M, Aug 2012 |
no-code end-to-end testing that integrates with any CI/CD pipeline | 112 | −4% | −10% | 0 | $41.2M | Series B$25M, Jan 2018 |
Acquired by Carlyle. Edtech and other technology | 99 | +2% | −1% | 0 | SeedAug 2012 | |
Marketing analytics for the world's biggest brand marketers | 56 | +2% | −2% | 0 | $21.7M | Series B$14M, Jul 2018 |
The only end-to-end crowdfunding platform built for today’s creators | 48 | +4% | 1 | $3M | Equity crowdfunding$3M, Jun 2025 | |
Soylent is a simple, nutritious, and affordable food that possesses… | 43 | +5% | +5% | 0 | $133M | Series B$50M, May 2017 |
Online VC | 37 | 0% | 0% | 0 | $6.5M | Series B$6.5M, Oct 2017 |
Simple, fun, and fast electric vehicles. | 32 | −3% | 0 | $73M | Series B$60M, Dec 2018 | |
The Human Diagnosis Project. | 17 | 0 | $2.8M | Undisclosed round$2.8M, Oct 2013 | ||
We are building a "transparent opaque" airfare and hotel booking site… | 17 | +21% | +21% | 0 | $2.5M | Convertible note$2.5M, Nov 2014 |
Thread makes it incredibly easy to dress well, using stylists and AI | 15 | 0% | 0% | 0 | $40.7M | Series B$3.3M, Nov 2021 |
Acquired by Xenon Ventures.We enable website developers to hook into… | 14 | −7% | 0 | $1.8M | Private equity$1.8M, Dec 2015 | |
We're making ecommerce simple connecting brands with sales channels | 12 | 0% | −8% | YC | ||
Helping developers scale their applications with ease. | 11 | 0% | +22% | 0 | SeedJul 2014 | |
A platform to plan, book and manage global and group travel. | 10 | 0% | +43% | 0 | $852K | Seed (before YC)$800K, May 2012 |
| 7 | 0% | 0% | 0 | $37.9M | Series C$10M, Apr 2016 | |
Virool provides native video advertising experience for the biggest… | 7 | 0% | 0% | 0 | $18.6M | Convertible note$12M, Aug 2016 |
Celery is a platform for pre-orders (www.trycelery.com). Accept… | 6 | 0% | 0% | 0 | $2.3M | Seed$2.3M, Jan 2015 |
Big Data Meets Startup Investing
The best tool for tracking and… | 5 | 0% | 0% | 0 | $17.2M | Series B$7.3M, Mar 2016 |
Insurance Billing APIs for Healthcare Businesses | 4 | 0 | $25.2M | Seed$22.7M, Dec 2015 | ||
Telepresence robots | 4 | 0 | $1.9M | Undisclosed round$1.9M, Jan 2014 | ||
The 401(k) that helps you grow | 3 | 0 | SeedAug 2012 | |||
OmniVirt is the leading VR Advertising platform for brands and… | 2 | 0 | Convertible noteOct 2016 | |||
Simple 3d modeling software for 3d printers. | 2 | 0 | SeedAug 2012 | |||
Mobile application prototyping. Now part of Google. | 1 | 0 | $3.8M | Series A$3.8M, Jul 2013 | ||
Canopy Labs automates customer analytics for small and medium-sized… | 1 | 0 | $2.1M | Undisclosed round$564K, Mar 2014 | ||
Dead simple statistical analysis software. Like R or SPSS but easy to… | 1 | 0 | AngelJan 2014 | |||
A fun image sharing community. | 1 | 0 | SeedAug 2012 | |||
We're a mobile on-device profiling and ad-serving platform initially… | 1 | 0 | SeedAug 2012 | |||
Kippt is a social bookmarking service | 1 | 0 | SeedJun 2012 | |||
The future of package delivery. We are building a network of… | 1 | 0 | $1M | Convertible note$1M, Aug 2012 | ||
Changing the way companies review employee performance with… | 1 | 0 | SeedAug 2012 | |||
Scoutzie is a curated community for the best mobile designers. If… | 1 | 0 | SeedAug 2012 | |||
Mobile travel guides done right. Personalized, context-aware, and… | ||||||
Pandora meets Yelp for K-12 educational videos. We match each… | ||||||
Easy mailing lists | ||||||
Mobile advertising |
Every launched company in YC's public directory, with its batch, status, industry and location. New companies show up the week YC lists them.
Each company is matched to Crustdata by its website. Crustdata adds team size and its change over 6 and 12 months, open roles from job postings, reported funding, and founders' past employers.
Hiring the most counts distinct roles posted in the last 60 days. Growth needs 10+ people today, shrinking 20+ a year ago, so tiny teams do not top the lists. Rebuilt every week.
The numbers on this page come from three Crustdata API calls. Crustdata tags 5,000+ companies with Y Combinator as an investor; swap the filter for any investor, industry or headcount range and track your own list, with founders' work emails one call away.
# 1. every company with Y Combinator as an investor curl https://api.crustdata.com/company/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "field": "funding.investors", "type": "in", "value": ["Y Combinator"] }, "fields": ["basic_info.name", "headcount.total", "headcount.growth_percent", "funding.total_investment_usd"], "limit": 100 }' # 2. open listings per company, last 60 days (limit 0 = counts only) curl https://api.crustdata.com/job/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "op": "and", "conditions": [ { "field": "company.basic_info.company_id", "type": "in", "value": [...] }, { "field": "metadata.date_added", "type": "=>", "value": "2026-08-24" } ]}, "limit": 0, "aggregations": [{ "type": "group_by", "field": "company.basic_info.company_id", "agg": "count" }] }' # 3. the same company filter as a weekly watch: POST /watch/company/search
83 companies were in Y Combinator's Summer 2012 batch (S12); 22 are active.
11 companies posted roles in the last 60 days, led by Coinbase (91 roles), Instacart (85 roles) and Zapier (12 roles). 4 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Submittable (+9%), Mattermost (+5%) and ClassDojo (+4%).
No reported rounds after their YC batch in the last 12 months.