# What does Subtrace use?

Subtrace (subtrace.dev) shows public evidence of 7 tools, according to runsonwhat (last checked 2026-10-23).

- Industry: Engineering, Product and Design
- Size: 1–10 employees
- Based in: San Francisco, United States

## Edge & Hosting

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

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code |  |

## Data & Observability

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

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records |  |
| [Resend](https://www.runsonwhat.com/reverse/resend) | Email Delivery | Email records |  |
| [Oneleet](https://www.runsonwhat.com/reverse/oneleet) | Security & Compliance | DNS verification records |  |

## FAQ

### What tools does Subtrace use?

As of October 2026, runsonwhat has found 7 tools at Subtrace (subtrace.dev) in public records. Edge & Hosting: Cloudflare. Application: Tailwind CSS. Data & Observability: PostHog. Company Ops: Google Workspace, Resend and Oneleet. Last checked October 23, 2026.

### What email provider does Subtrace use?

Subtrace uses Google Workspace for email and office software, according to runsonwhat (October 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace. Google Workspace is used by 404,413 companies runsonwhat tracks.

### What analytics tools does Subtrace use?

Subtrace uses PostHog for analytics, according to runsonwhat (October 2026). runsonwhat found PostHog through PostHog code on subtrace.dev. PostHog is used by 10,094 companies runsonwhat tracks.

### Does Subtrace use Cloudflare?

Yes. runsonwhat found Cloudflare at Subtrace through DNS records that point at Cloudflare and code on subtrace.dev. Cloudflare is a CDN & Edge tool used by 706,396 companies runsonwhat tracks.

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

The companies with the stacks most like Subtrace's are Promptless Documentation, NuMind, Laminar and PropelAuth, according to runsonwhat (October 2026). Each shares 4 to 6 tools with Subtrace, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Subtrace uses?

runsonwhat reads public records only. Of the 7 tools at Subtrace, 3 were found through DNS records, 2 through email records and 2 through code on subtrace.dev. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and subtrace.dev about monthly.


---

Source: runsonwhat, https://www.runsonwhat.com/company/subtrace.dev (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.