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Sentry among Y Combinator companies

Sentry was detected on 125 of 5,386 crawled Y Combinator company websites, a share of 2.3%.

GroupCrawledRunning SentryShare
Inc 5000 (2026) 4,885 281 5.8%
Y Combinator companies 5,386 125 2.3%
Fortune 500 472 9 1.9%
Unicorns 1,000 85 8.5%

5,386 of 6,133 Y Combinator domains returned a usable record and form the denominator. 5,242 were counted from a rendered homepage crawl on 4 September 2026, 144 from a plain fetch only, and 747 returned no usable record. Company list: Y Combinator company directory. Rank 3 of the 5 Developer Tools tools published for this group.

Software used by Y Combinator companies · Developer Tools across all four groups · Sentry across every group and the wider sample

Sentry share of crawled company websites, by groupInc 5000 (2026)5.8%Y Combinator companies2.3%Fortune 5001.9%Unicorns8.5%
Sentry share of crawled company websites, by group

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Sentry runs on 2.3% of Y Combinator companies, 125 of 5,386 crawled companiesInstallmapUsed by 2.3% of Y Combinator companies
<a href="https://installmap.com/groups/yc/sentry"><img src="https://installmap.com/badges/yc/sentry.svg" alt="Sentry runs on 2.3% of Y Combinator companies, 125 of 5,386 crawled companies"></a>
[![Sentry runs on 2.3% of Y Combinator companies, 125 of 5,386 crawled companies](https://installmap.com/badges/yc/sentry.svg)](https://installmap.com/groups/yc/sentry)

Badge URL: https://installmap.com/badges/yc/sentry.svg · all badges.

Cite

Sentry was detected on 125 of 5,386 crawled Y Combinator company websites (2.3%). Installmap, 4 September 2026, https://installmap.com/groups/yc/sentry.

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