Reproduce and
fix bugs, fast.

The open-source developer tool for replayable bug reports.
Debug faster and ship defect-free software to your users.

Rewind, Replay, Inspect

We're building the tools to supercharge your debugging experience.

Rewind and replay bugs easily with instant session recording. Capture every click and key press.

Replay logs, warnings and errors, with stack traces to understand when and why errors are thrown.

Capture and review network requests, responses and headers.

View changes to the DOM and styling over time, using a replayable element inspector.