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The best open source alternative to Markup is BugPin. If that doesn't suit you, we've compiled a ranked list of other open source Markup alternatives to help you find a suitable replacement.
Markup alternatives are mainly Community Feedback Platforms but may also be Error Tracking Tools. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Markup.
Embeds a lightweight widget into web apps so users can capture screenshots, annotate issues, and submit reports with console logs and browser metadata included.

BugPin is a self-hosted bug reporting tool built for web teams who want detailed, visual reports without sending data to a third-party cloud. It embeds a small widget directly into your web app, letting users capture screenshots, annotate them, and submit reports in seconds. Each submission automatically bundles console errors, network logs, and browser metadata, so developers get real context instead of vague descriptions.
The widget is under 150KB gzipped, loads asynchronously, and uses Shadow DOM for complete style isolation. It won't conflict with your app's styles or slow down page load.
Key capabilities:
BugPin stores everything on your own servers. There's no per-seat pricing, no usage caps, and no data leaving your infrastructure. The Community Edition is free forever and covers the core feature set. Enterprise adds SSO, webhooks, and white-label branding for teams that need them.
For teams already tracking errors with tools like Bugsink or looking for a self-hosted alternative to Gleap, BugPin fills a specific gap: visual, user-submitted reports with enough technical detail to act on immediately.