# What does Prelim use?

Prelim (prelim.io) shows public evidence of 10 tools, according to runsonwhat (last checked 2026-11-13).

- Industry: IT Services
- Size: 11–50 employees
- Based in: Allen, United States
- LinkedIn: https://www.linkedin.com/company/prelim-io

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Namecheap](https://www.runsonwhat.com/reverse/namecheap) | DNS | DNS records |  |
| [Railway](https://www.runsonwhat.com/reverse/railway) | Hosting & Cloud | Custom domain, Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code |  |
| [Firebase](https://www.runsonwhat.com/reverse/firebase) | Backend & Database | Website code |  |

## Data & Observability

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

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records |  |
| [reCAPTCHA](https://www.runsonwhat.com/reverse/recaptcha) | Security & Compliance | Website code |  |
| [Resend](https://www.runsonwhat.com/reverse/resend) | Email Delivery | Email records |  |

## FAQ

### What tools does Prelim use?

As of November 2026, runsonwhat has found 10 tools at Prelim (prelim.io) in public records. Edge & Hosting: Namecheap and Railway. Application: Next.js and Firebase. Data & Observability: Google Analytics. Company Ops: Microsoft 365, reCAPTCHA and Resend. Last checked November 13, 2026.

### What cloud does Prelim run on?

Prelim uses Railway for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Railway through a subdomain that points at Railway and code on prelim.io. Railway is used by 2,757 companies runsonwhat tracks.

### What email provider does Prelim use?

Prelim uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 739,097 companies runsonwhat tracks.

### What analytics tools does Prelim use?

Prelim uses Google Analytics for analytics, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on prelim.io. Google Analytics is used by 904,953 companies runsonwhat tracks.

### Does Prelim use reCAPTCHA?

Yes. runsonwhat found reCAPTCHA at Prelim through reCAPTCHA code on prelim.io. reCAPTCHA is a Security & Compliance tool used by 291,541 companies runsonwhat tracks.

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

The companies with the stacks most like Prelim's are Dusky International (Pvt), Mypro Appz -  App Development Company, Royalty Roofing and TKV Advogados Associados, according to runsonwhat (November 2026). Each shares 2 to 5 tools with Prelim, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Prelim uses?

runsonwhat reads public records only. Of the 10 tools at Prelim, 4 were found through code on prelim.io, 2 through DNS records, 2 through email records, 1 through website configuration files 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 prelim.io about monthly.


---

Source: runsonwhat, https://www.runsonwhat.com/company/prelim.io (updated November 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.