Reactor's tech stack
What does Reactor use?
Reactor (reactor.inc) uses at least 26 tools we can see from public records, including Vercel for hosting, PostHog for analytics, web-vitals for monitoring and Bunny.net for content delivery. Reactor started using ChatGPT Ads in Nov 2026. Last checked .
- Company page
- Tools found
- 26
- Categories
- 14
- Layers
- 5 of 5
- Changes seen
- 1
Reactor's stack, layer by layer
Of 26 tools, 16 came from website code, 4 from DNS verification records, 2 from email records and 4 from other records. 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
4 tools, where the bytes are served from
Hosting & Cloud
CDN & Edge
Application
7 tools, what the product is built with
Data & Observability
7 tools, what they measure and store
Monitoring
Flags & Experiments
Go-to-market
4 tools, how they find and keep customers
Marketing
Company Ops
4 tools, what the team runs on day to day
Email Delivery
Security & Compliance
What changed at Reactor
Recent starts and stops
- StartedChatGPT Ads
Companies like Reactor also use
Tools common among companies with a similar stack that we haven't found at Reactor.
Companies with a stack like Reactor's
Ranked by shared tools, with rare tools counting more.
River MarketsFintech · 1–10 people8in common
AstronomerArtificial Intelligence · 201–1,000 people10in common
Doowii, Inc.doowii.io6in common
Axios HQSoftware · 51–200 people11in common
PinConstruction · 11–50 people13in common
SageOxsageox.ai13in common
VerihubsEngineering, Product and Design · 51–200 people9in common
CivicPlusIT Services · 201–1,000 people9in common
Reactor tech stack FAQ
What tools does Reactor use?
As of November 2026, runsonwhat has found 26 tools at Reactor (reactor.inc) in public records. Edge & Hosting: Amazon Web Services, Amazon Route 53 and Vercel. Application: GSAP, React and Tailwind CSS. Data & Observability: Google Analytics, Google Tag Manager and web-vitals. Go-to-market: Google Ads, ChatGPT Ads and Reddit Ads. Company Ops: Google Workspace, Apple Business and Resend. Last checked November 6, 2026.
What cloud does Reactor run on?
Reactor uses Amazon Web Services for hosting and cloud infrastructure, alongside Vercel, according to runsonwhat (November 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on reactor.inc. Amazon Web Services is used by 147,363 companies runsonwhat tracks.
What email provider does Reactor use?
Reactor uses Google Workspace for email and office software, alongside Apple Business, according to runsonwhat (November 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace. Google Workspace is used by 419,191 companies runsonwhat tracks.
What analytics tools does Reactor use?
Reactor uses Google Analytics for analytics, alongside Google Tag Manager, PostHog and Vercel Analytics, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on reactor.inc. Google Analytics is used by 903,825 companies runsonwhat tracks.
What monitoring tools does Reactor use?
Reactor uses web-vitals for monitoring, alongside incident.io, according to runsonwhat (November 2026). runsonwhat found web-vitals through web-vitals code on reactor.inc. web-vitals is used by 30,120 companies runsonwhat tracks.
Does Reactor use Google Ads?
Yes. runsonwhat found Google Ads at Reactor through Google Ads code on reactor.inc. Google Ads is a Ads & Pixels tool used by 540,743 companies runsonwhat tracks.
Does Reactor use AI tools?
Yes. runsonwhat has found OpenAI at Reactor; OpenAI, for example, through a DNS verification record for OpenAI. AI services called only from servers leave no public trace, so Reactor may use more AI tools than these.
Has Reactor changed tools recently?
Yes. On runsonwhat's rechecks, Reactor started using ChatGPT Ads (latest on November 6, 2026). A change counts only between two checks of reactor.inc done the same way.
Which companies have a tech stack similar to Reactor's?
The companies with the stacks most like Reactor's are River Markets, Astronomer, Doowii and Axios HQ, according to runsonwhat (November 2026). Each shares 6 to 11 tools with Reactor, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.
How does runsonwhat know what Reactor uses?
runsonwhat reads public records only. Of the 26 tools at Reactor, 16 were found through code on reactor.inc, 5 through DNS records, 2 through email records, 2 through subdomains that point at the vendor and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and reactor.inc 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.