New from the DevTools team: Stresseur, the AI test engineer for APIs →
DevTools

Free for developers.

DevTools Studio + CLI are free and open source. No account required.

Download DevTools
Local-first. Works offline.YAML workflows live in Git.CI-ready runs via CLI.

Free

$0

Studio + CLI included.

  • Studio app (macOS, Windows, Linux)
  • CLI runs in CI
  • Unlimited workflows
  • YAML export
  • Env vars + secrets from CI
  • Local-first / offline
Download

Looking for hosted or AI features? They live in Stresseur, the AI test engineer for APIs from the DevTools team (early access).

Built for modern engineering teams

"Finally, an API tool that treats workflows as code. Git diffs actually make sense."

— Early adopter

"Offline-first means my team can work anywhere. No cloud dependency, no surprise outages."

— Platform engineer

Frequently Asked Questions

Is DevTools Studio free forever?
Yes. DevTools Studio is open source under Apache-2.0. You can use it forever without paying.
Is the CLI free?
Yes. The DevTools CLI is free and open source. Run your YAML workflows in CI with JUnit/JSON outputs at no cost.
Do you store my data?
No. DevTools is local-first. Your workflows, requests, and responses stay on your machine. Nothing is sent to our servers.
Can I use DevTools offline?
Yes. DevTools works completely offline. No account required. Your data lives in local files you control.
How do secrets work in CI?
Use environment variables in your CI system (GitHub Actions, GitLab CI, Jenkins, etc.) and reference them in your YAML flows. DevTools CLI reads from your CI environment.
Is on-prem / self-hosted supported?
Yes. DevTools Studio and CLI run entirely on your machines. Hosted and AI features live in Stresseur (https://stresseur.com), the AI test engineer for APIs from the DevTools team.

Ready to get started?

Download DevTools for free.

Download Now