GlitchTip

Capturing application errors is what GlitchTip does: it collects crash reports, unhandled exceptions and performance data from your code and groups them into issues, so a stack trace seen a thousand times appears once with the affected users attached. It speaks the Sentry protocol, so existing SDKs and DSNs keep working, and it adds integrations for Django, Flask, Ruby, Rails and Next.js plus release tracking.

Teams use it to watch production errors without paying per event, and it sits beside the logs and metrics you already collect.

Self hosting keeps stack traces and user data inside your own network, removes per event billing, and leaves a database you can back up with a file copy.