YC Roaster's tech stack
What does YC Roaster use?
YC Roaster (ycroaster.com) uses at least 10 tools we can see from public records, including Vercel for hosting, PostHog for analytics, web-vitals for monitoring and Cloudflare for content delivery. Last checked .
“Venture firm that has invested $40M+ in 100+ Y Combinator startups.”
- Tools found
- 10
- Categories
- 8
- Layers
- 4 of 5
- Changes seen
- 1
YC Roaster's stack, layer by layer
Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Edge & Hosting
2 tools, where the bytes are served from
Hosting & Cloud
CDN & Edge
Application
5 tools, what the product is built with
Data & Observability
2 tools, what they measure and store
Monitoring
Analytics
Company Ops
1 tool, what the team runs on day to day
Email Delivery
What changed at YC Roaster
Recent starts and stops
- StartedFirebase
Companies like YC Roaster also use
Tools common among companies with a similar stack that we haven't found at YC Roaster.
Companies with a stack like YC Roaster's
Ranked by shared tools, with rare tools counting more.
Moda Labs, Inc.Infrastructure · 1–10 people6in common
Make the DotClothing2in common
Phonic Inc.Marketing · 1–10 people3in common
Futuri Mediafuturimedia.com5in common
CascoSecurity · 1–10 people5in common
Fly.io, Inc.Cloud Hosting · 11–50 people4in common
Atlaso Labs Inc.atlaso.ai7in common
BystreetB2B · 1–10 people2in common
YC Roaster tech stack FAQ
What tools does YC Roaster use?
As of October 2026, runsonwhat has found 10 tools at YC Roaster (ycroaster.com) in public records. Edge & Hosting: Cloudflare and Vercel. Application: React, Tailwind CSS and Next.js. Data & Observability: web-vitals and PostHog. Company Ops: Resend. Last checked October 9, 2026.
What cloud does YC Roaster run on?
YC Roaster uses Vercel for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Vercel through a subdomain that points at Vercel and DNS records. Vercel is used by 46,658 companies runsonwhat tracks.
What analytics tools does YC Roaster use?
YC Roaster uses PostHog for analytics, according to runsonwhat (October 2026). runsonwhat found PostHog through PostHog code on ycroaster.com. PostHog is used by 9,414 companies runsonwhat tracks.
What monitoring tools does YC Roaster use?
YC Roaster uses web-vitals for monitoring, according to runsonwhat (October 2026). runsonwhat found web-vitals through web-vitals code on ycroaster.com. web-vitals is used by 26,081 companies runsonwhat tracks.
Does YC Roaster use Cloudflare?
Yes. runsonwhat found Cloudflare at YC Roaster through email records that authorize Cloudflare and DNS records. Cloudflare is a CDN & Edge tool used by 692,707 companies runsonwhat tracks.
Has YC Roaster changed tools recently?
Yes. On runsonwhat's rechecks, YC Roaster started using Firebase (latest on October 9, 2026). A change counts only between two checks of ycroaster.com done the same way.
Which companies have a tech stack similar to YC Roaster's?
The companies with the stacks most like YC Roaster's are Moda Labs, Make the Dot, Phonic and Futuri Media, according to runsonwhat (October 2026). Each shares 2 to 6 tools with YC Roaster, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.
How does runsonwhat know what YC Roaster uses?
runsonwhat reads public records only. Of the 10 tools at YC Roaster, 5 were found through code on ycroaster.com, 2 through email records, 1 through website configuration files, 1 through subdomains that point at the vendor and 1 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and ycroaster.com about monthly.
We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.