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Sentry

Partly replaceablefree (paid plans from €23.16/month, converted from $26, rate of Oct 2, 2026)editor verdict · 0 votes

Application error and performance monitoring: groups errors, alerts the team and keeps the context. Free plan for a single developer.

A small service that receives your application's errors, groups them by type and emails you is simple to build. Sentry adds reading browser error traces from source files, performance monitoring and session replays. For a single project, replaceable; for several applications and teams, keep the tool.

What you lose

  • Reconstructing browser errors from the source code
  • Performance monitoring
  • Session replays
  • Integrations with development tools

Existing alternatives to Sentry

  • ErrbitOpen source

    Self-hosted error collector (MIT), compatible with Airbrake clients.

  • HighlightOpen source

    Error tracking, logs and session replays (Apache-2.0), self-hostable.

  • BugsinkOpen source

    Simple self-hosted error tracking (MIT), compatible with the Sentry protocol.

See all 3 alternatives

The prompt to build it yourself

Build me a small error collector for my web applications, without claiming to replace Sentry.

Stack: Node, TypeScript, SQLite, a JavaScript script to include in my applications.

To do:
- A script that captures unhandled errors (browser and server) and sends them to my collector with the page, browser and time.
- Grouping of identical errors by fingerprint, occurrence counter, first and last seen.
- Interface listing the errors, with status (new, seen, resolved) and trace.
- Email alert for a new error (configurable SMTP), limited to avoid a flood.
- No personal data collected by default (IP addresses not kept); configurable retention period.
- Tests on grouping; README with the limits.

Out of scope: performance monitoring, session replays, source maps.

Frequently asked questions

Can Sentry be replaced by a custom-built tool?
casevibecode verdict: Partly replaceable. A small service that receives your application's errors, groups them by type and emails you is simple to build. Sentry adds reading browser error traces from source files, performance monitoring and session replays. For a single project, replaceable; for several applications and teams, keep the tool.
What is Sentry used for?
Application error and performance monitoring: groups errors, alerts the team and keeps the context. Free plan for a single developer.
What alternatives to Sentry already exist?
Errbit (open source), Highlight (open source), Bugsink (open source). Options to compare before committing to a custom build.

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