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Tolt among Y Combinator companies

Tolt was detected on 10 of 5,388 crawled Y Combinator company websites, a share of 0.2%. Crawled 4 September 2026.

  • 10running Tolt
  • 0.2%share
  • 5,388crawled
  • 9columns

One CSV, all 10 Y Combinator companies, one-time.

Card payment through Stripe. The download link opens right after payment and stays valid. Questions: hello@installmap.com

installmap-yc-tolt.csv10 rows, 9 columns

DomainNameBatch
exa.aiExaSummer 2021
retellai.comRetell AIWinter 2024
vapi.aiVapiWinter 2021
taxgpt.comTaxGPTSummer 2024
speak.comSpeakWinter 2017
argil.aiArgilSummer 2024
overlap.aiOverlapSummer 2024
stardex.comStardexSummer 2021

8 of the 10 rows, 3 of the 9 columns.

Tolt runs on these Y Combinator companies

  • Exa
  • Retell AI
  • Vapi
  • TaxGPT
  • Speak
  • Argil
  • Overlap
  • Stardex
  • Queue
  • 21st

10 of 10, ordered by team size, largest first. The CSV has all 10.

Tolt across the groups

GroupCrawledRunning ToltShare
Inc 5000 (2026) 4,888 n/a n/a
Y Combinator companies 5,388 10 0.2%
Fortune 500 472 n/a n/a
Unicorns 1,000 n/a n/a
SaaS companies 8,048 11 0.1%
Tranco top 10,000 1,572 n/a n/a

5,388 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, 146 from a plain fetch only, and 745 returned no usable record. Email hosting and email security are read from each domain's MX and SPF records, for the same domains. Company list: Y Combinator company directory. <5 means fewer than 5 crawled domains in that group. Rank 3 of the 5 Affiliate and Referral tools published for this group.

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

Tolt share of crawled company websites, by groupInc 5000 (2026)n/aY Combinator companies0.2%Fortune 500n/aUnicornsn/aSaaS companies0.1%Tranco top 10,000n/a
Tolt share of crawled company websites, by group

Source: Installmap crawl, 4 September 2026

Badge

Tolt runs on 10 of 5,388 crawled YC companies (0.2%)InstallmapUsed by 10 YC companies
<a href="https://installmap.com/groups/yc/tolt"><img src="https://installmap.com/badges/yc/tolt.svg" alt="Tolt runs on 10 of 5,388 crawled YC companies (0.2%)"></a>
[![Tolt runs on 10 of 5,388 crawled YC companies (0.2%)](https://installmap.com/badges/yc/tolt.svg)](https://installmap.com/groups/yc/tolt)

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

Questions

How many Y Combinator companies use Tolt?

10 of the 5,388 Y Combinator company websites we crawled on 4 September 2026, a share of 0.2%.

What does a row hold?

domain, name, batch, year, industry, subindustry, status, team size, location. One row per company domain, 9 columns.

What do I get after paying?

One UTF-8 CSV with a header row and all 10 rows. The download link opens right after the card payment and stays valid, so you can download again later.

How does the free sample work?

Enter your email above and we send a link to a CSV of 10 rows from this list with all 9 columns.

Is this every Y Combinator company using Tolt?

No. 5,388 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, 146 from a plain fetch only, and 745 returned no usable record. Email hosting and email security are read from each domain's MX and SPF records, for the same domains. Company list: Y Combinator company directory. A company that uses Tolt without it showing there is not counted. Method.

Cite this

Installmap, Tolt among Y Combinator companies, crawl of 4 September 2026, https://installmap.com/groups/yc/tolt.

Canonical URL
https://installmap.com/groups/yc/tolt
Denominator
10 of 5,388 crawled Y Combinator company websites, a share of 0.2%

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