# What does OpenSafe SAS use?

OpenSafe SAS (opensafe.io) shows public evidence of 15 tools, according to runsonwhat (last checked 2026-10-20).

- Industry: Software
- Size: 1–10 employees
- Based in: Saint Herblain, France
- Founded: 2014
- LinkedIn: https://www.linkedin.com/company/opensafe-io

## Edge & Hosting

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

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code |  |
| [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records |  |
| [Firebase](https://www.runsonwhat.com/reverse/firebase) | Backend & Database | DNS verification records, Email records, Website code |  |
| [Astro](https://www.runsonwhat.com/reverse/astro) | Frontend | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [PostHog](https://www.runsonwhat.com/reverse/posthog) | Analytics | Website code |  |
| [Plausible](https://www.runsonwhat.com/reverse/plausible) | Analytics | Website code |  |
| [Better Stack](https://www.runsonwhat.com/reverse/betterstack) | Monitoring | Custom domain |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Super](https://www.runsonwhat.com/reverse/super-so) | Website & CMS | Custom domain |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records |  |
| [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records |  |

## FAQ

### What tools does OpenSafe use?

As of October 2026, runsonwhat has found 15 tools at OpenSafe (opensafe.io) in public records. Edge & Hosting: Cloudflare, OVHcloud and Scaleway. Application: Tailwind CSS, OpenAI and Firebase. Data & Observability: PostHog, Plausible and Better Stack. Go-to-market: Super. Company Ops: Google Workspace and SendGrid. Last checked October 20, 2026.

### What cloud does OpenSafe run on?

OpenSafe uses OVHcloud for hosting and cloud infrastructure, alongside Scaleway, according to runsonwhat (October 2026). runsonwhat found OVHcloud through DNS records that point at OVHcloud. OVHcloud is used by 26,704 companies runsonwhat tracks.

### What email provider does OpenSafe use?

OpenSafe 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 400,283 companies runsonwhat tracks.

### What analytics tools does OpenSafe use?

OpenSafe uses PostHog for analytics, alongside Plausible, according to runsonwhat (October 2026). runsonwhat found PostHog through PostHog code on opensafe.io. PostHog is used by 9,723 companies runsonwhat tracks.

### What is OpenSafe's website built with?

OpenSafe uses Super for its website, according to runsonwhat (October 2026). runsonwhat found Super through a subdomain that points at Super. Super is used by 129 companies runsonwhat tracks.

### What monitoring tools does OpenSafe use?

OpenSafe uses Better Stack for monitoring, according to runsonwhat (October 2026). runsonwhat found Better Stack through a subdomain that points at Better Stack. Better Stack is used by 2,634 companies runsonwhat tracks.

### Does OpenSafe use Cloudflare?

Yes. runsonwhat found Cloudflare at OpenSafe through Cloudflare code on opensafe.io. Cloudflare is a CDN & Edge tool used by 698,128 companies runsonwhat tracks.

### Does OpenSafe use AI tools?

Yes. runsonwhat has found OpenAI at OpenSafe; OpenAI, for example, through a DNS verification record for OpenAI. AI services called only from servers leave no public trace, so OpenSafe may use more AI tools than these.

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

The companies with the stacks most like OpenSafe's are Mount Kelvin, qodo, Morpheus One and newmo株式会社（ニューモ）, according to runsonwhat (October 2026). Each shares 4 to 7 tools with OpenSafe, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what OpenSafe uses?

runsonwhat reads public records only. Of the 15 tools at OpenSafe, 5 were found through code on opensafe.io, 4 through DNS records, 3 through subdomains that point at the vendor, 2 through email records and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and opensafe.io about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/opensafe.io (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.