runsonwhat

OpenSpec's tech stack

What does OpenSpec use?

OpenSpec (openspec.dev) uses at least 8 tools we can see from public records, including Google Workspace for email and documents, Discord for customer support, PostHog for analytics and web-vitals for monitoring. Last checked .

“Plan mode for complex features”

Industry
B2B
Based in
Sydney, Australia
Re-check liveVisit openspec.dev
Tools found
8
Categories
8
Layers
5 of 5
Last checked
Oct 2026

OpenSpec's stack, layer by layer

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

1 tool, where the bytes are served from

CDN & Edge

Application

2 tools, what the product is built with

Frontend

AI

Data & Observability

2 tools, what they measure and store

Monitoring

Analytics

Go-to-market

2 tools, how they find and keep customers

Marketing

Support & Docs

Company Ops

1 tool, what the team runs on day to day

Workspace

Companies like OpenSpec also use

Tools common among companies with a similar stack that we haven't found at OpenSpec.

Companies with a stack like OpenSpec's

Ranked by shared tools, with rare tools counting more.

More B2B companies

Other B2B companies we've checked.

OpenSpec tech stack FAQ

What tools does OpenSpec use?

We've found 8 tools at OpenSpec (openspec.dev). Edge & Hosting: Cloudflare. Application: Astro. Data & Observability: web-vitals and PostHog. Go-to-market: Discord. Company Ops: Google Workspace. Last checked October 2, 2026.

What email provider does OpenSpec use?

OpenSpec uses Google Workspace for email and documents. We found Google Workspace through email records.

What does OpenSpec use for customer support?

OpenSpec uses Discord for customer support. We found Discord through website code.

What analytics tools does OpenSpec use?

OpenSpec uses PostHog for analytics. We found PostHog through custom domain and website code.

Does OpenSpec use Cloudflare?

Yes. We found Cloudflare at OpenSpec through DNS records and website code. Cloudflare is used by 410,999 companies we track.

How does runsonwhat know what OpenSpec uses?

We read public traces only: OpenSpec's DNS and email records, certificate logs, the code its website loads, and published subprocessor lists. A tool is listed only when a direct record backs it up. DNS is rechecked weekly and the website 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.