# What does Replay Software use?

Replay Software (replay.software) shows public evidence of 11 tools, according to runsonwhat (last checked 2026-10-09).

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code |  |
| [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain, Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code |  |
| [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code |  |
| [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code |  |
| [Stripe](https://www.runsonwhat.com/reverse/stripe) | Payments & Billing | DNS verification records, Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Vercel Analytics](https://www.runsonwhat.com/reverse/vercel-analytics) | Analytics | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Postmark](https://www.runsonwhat.com/reverse/postmark) | Email Delivery | Email records |  |
| [DMARC Digests](https://www.runsonwhat.com/reverse/dmarcdigests) | Security & Compliance | Email records |  |
| [Fastmail](https://www.runsonwhat.com/reverse/fastmail) | Workspace | Email records |  |

## FAQ

### What tools does Replay Software use?

As of October 2026, runsonwhat has found 11 tools at Replay Software (replay.software) in public records. Edge & Hosting: Cloudflare and Vercel. Application: React, Tailwind CSS and Next.js. Data & Observability: Vercel Analytics. Company Ops: Postmark, DMARC Digests and Fastmail. Last checked October 9, 2026.

### What cloud does Replay Software run on?

Replay Software uses Vercel for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Vercel through a subdomain that points at Vercel and code on replay.software. Vercel is used by 46,427 companies runsonwhat tracks.

### What email provider does Replay Software use?

Replay Software uses Fastmail for email and office software, according to runsonwhat (October 2026). runsonwhat found Fastmail through email records that authorize Fastmail. Fastmail is used by 1,118 companies runsonwhat tracks.

### What payment provider does Replay Software use?

Replay Software uses Stripe for payments and billing, according to runsonwhat (October 2026). runsonwhat found Stripe through a DNS verification record for Stripe and code on replay.software. Stripe is used by 26,316 companies runsonwhat tracks.

### What analytics tools does Replay Software use?

Replay Software uses Vercel Analytics for analytics, according to runsonwhat (October 2026). runsonwhat found Vercel Analytics through Vercel Analytics code on replay.software. Vercel Analytics is used by 7,415 companies runsonwhat tracks.

### Does Replay Software use Cloudflare?

Yes. runsonwhat found Cloudflare at Replay Software through DNS records that point at Cloudflare and code on replay.software. Cloudflare is a CDN & Edge tool used by 692,310 companies runsonwhat tracks.

### Which companies have a tech stack similar to Replay Software's?

The companies with the stacks most like Replay Software's are Scryfall Magic: The Gathering Search, The Game Crafter, Influx and Stadia Maps, according to runsonwhat (October 2026). Each shares 3 to 5 tools with Replay Software, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Replay Software uses?

runsonwhat reads public records only. Of the 11 tools at Replay Software, 4 were found through code on replay.software, 3 through DNS records, 3 through email records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and replay.software about monthly.


---

Source: runsonwhat, https://www.runsonwhat.com/company/replay.software (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.