Y Combinator's directory lists 9 companies in the Summer 2005 batch: 0 Active, 6 Acquired, 0 Public and 3 Inactive. 33% of Summer 2005 is listed Inactive, against 23% across YC batches at least two years old, so this batch has lost more companies than most.
ActiveAcquiredPublicInactive
Statuses are Y Combinator's own listing in its public company directory, read on the date shown. YC's directory can drop companies altogether, so the Inactive counts here are a floor, not a full count of companies that stopped. Acquired and Public are as YC lists them; neither says anything about the price or the outcome for founders.
Every company in Summer 2005
| Company | What they do | Status | Team |
|---|---|---|---|
| Clickfacts | Acquired | 11 | |
| Kiko | We're the best online calendar solution to ever exist. Period. | Acquired | — |
| Loopt | Acquired | 11 | |
| Parakey | Acquired | 2 | |
| The frontpage of the internet. | Acquired | 2000 | |
| TextPayMe | Acquired | 11 | |
| Infogami | Inactive | 2 | |
| Memamp | Inactive | — | |
| Simmery | Inactive | — |
How this is measured
Measured 2026-09-26 from Y Combinator's company directory. Team size is the number YC lists for the company, where it lists one. Survival here means listed Active; Acquired and Public are shown separately because YC's listing does not say whether an acquisition was a good outcome.
All batchesShut-down companies
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