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Optimizely among Y Combinator companies

Optimizely was detected on 19 of 5,386 crawled Y Combinator company websites, a share of 0.4%.

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 A/B Testing and Personalization tools published for this group.

Software used by Y Combinator companies · A/B Testing and Personalization across all four groups · Optimizely across every group and the wider sample

<a href="https://installmap.com/groups/yc/optimizely"><img src="https://installmap.com/badges/yc/optimizely.svg" alt="Optimizely runs on 0.4% of Y Combinator companies, 19 of 5,386 crawled companies"></a>

[![Optimizely runs on 0.4% of Y Combinator companies, 19 of 5,386 crawled companies](https://installmap.com/badges/yc/optimizely.svg)](https://installmap.com/groups/yc/optimizely)

Cite

Optimizely was detected on 19 of 5,386 crawled Y Combinator company websites (0.4%). Installmap, 4 September 2026, https://installmap.com/groups/yc/optimizely.

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Other A/B Testing and Personalization tools in this group

• VWO 1.4%
• Google Optimize 0.4%
• Convert Experiences 0.2%