Get an API keyGet an API keyAll 14 companies in Y Combinator's Winter 2007 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 |
|---|---|---|---|---|---|---|
 Octopart is a search engine for electronic components | 12 | 0% | −8% | 0 | $375K | Seed$360K, May 2008 |
 | 3 | 0 | SeedJan 2007 | |||
 Buxfer helps you make better spending decisions by making it easy to… | 2 | 0 | $315K | YC investment$300K, Apr 2007 | ||
 Build a free website that grows with your business. | ||||||
Messaging. | ||||||
 Zenter is the gmail of slides | ||||||
 | ||||||
 Free messaging on mobile phones | ||||||
 A global community creating the future of live entertainment. | ||||||
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
14 companies were in Y Combinator's Winter 2007 batch (W07); 2 are active.
We found no job postings for these companies in the last 60 days.
None of these companies has enough team history yet to rank.
No reported rounds after their YC batch in the last 12 months.