Danwo

Danwo is an open-source end-to-end testing framework that drives web and mobile apps through their UI and checks backend activity.

Danwo is an open-source end-to-end testing framework for web and mobile applications. It drives apps through the UI like a user and checks what happened behind the scenes. The framework includes locators, plain-English agent steps that replay with no model calls, and screenshot comparison for browsers, Android, and iOS. When apps take payments, send emails, or handle webhooks, users can enable a backend layer with emulated providers, invariants, and a fault matrix. Every run leaves a flight record containing video, steps, and background calls in a dashboard, a PR comment, and over MCP.

Danwo at a glance

Best for: Software engineer
Runs on: macOS, Windows, Linux, Android, iOS, Web, API
Pricing: Free
Released: October 2026
Category: AI coding tool
Website: github.com/carbonmeai/danwo

Key features

Locators for model-free testing
Plain-English agent steps with model caching
Backend layer with emulated providers
Database and provider invariant checking
Fault matrix for rerunning tests with errors
Flight records with video and steps
Support for web and mobile apps

Use it for

Testing user interfaces on web and mobile
Emulating third-party providers locally
Rerunning tests with injected faults
Generating flight records for test runs

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