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Rewardful among Y Combinator companies

Rewardful was detected on 43 of 5,386 crawled Y Combinator company websites, a share of 0.8%.

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. <5 means fewer than 5 crawled domains in that group. Rank 1 of the 5 Affiliate and Referral tools published for this group.

Software used by Y Combinator companies · Affiliate and Referral across all groups · Rewardful across every group and the wider sample

Rewardful runs on these Y Combinator companies

• Codingal
• Double
• Vendoo
• Sendblue
• Sully.ai
• haddock
• Gumloop
• Raycast
• Vector
• Wondercraft
• Zaymo
• Topo
• Clickfacts
• Julius
• Malloc Inc
• Mem0
• Rosebud AI
• Vimmerse
• Dashworks
• Shimmer

20 of 43, ordered by team size, largest first.

<a href="https://installmap.com/groups/yc/rewardful"><img src="https://installmap.com/badges/yc/rewardful.svg" alt="Rewardful is the most detected Affiliate tool among Y Combinator companies: 43 of 5,386 crawled YC companies (0.8%)"></a>

[![Rewardful is the most detected Affiliate tool among Y Combinator companies: 43 of 5,386 crawled YC companies (0.8%)](https://installmap.com/badges/yc/rewardful.svg)](https://installmap.com/groups/yc/rewardful)

Other Affiliate and Referral tools in this group

• FirstPromoter 0.3%
• Tolt 0.2%
• Awin 0.1%
• PromoteKit 0.1%
• PartnerStack 0.1%