What is Sentry used for?

Sentry is a developer-focused platform for error tracking and performance monitoring that helps teams detect, trace and fix issues, with SDKs for most programming languages. It is a good fit for catching production exceptions in web apps, tracking crashes in mobile and game builds, and finding slow transactions and endpoints.

Is Sentry open source?

Yes. Sentry is open source under a custom licence. Its source code is on GitHub at getsentry/sentry and is written mainly in Python.

Yes. Sentry is open source, so the software itself is free to use under the terms of its own licence. A managed cloud version is also available, with paid plans from $26 per month.

Can I self-host Sentry?

Yes. Sentry can be self-hosted on your own server or infrastructure.

What is Sentry an alternative to?

Sentry is an open-source alternative to Rollbar, Bugsnag, Airbrake and Raygun. Other open-source alternatives to Rollbar include HyperDX, Sentry and Highlight.io.

Is Sentry actively maintained?

Yes. The most recent commit to Sentry was on 2 October 2026, and the latest release is 26.9.0, published on 15 September 2026. The project has 45k stars on GitHub.

Sentry: open-source alternative to Rollbar, Bugsnag

About Sentry

Sentry is a debugging platform that helps developers detect, trace and fix problems in their applications. It collects crash reports and errors from running software, groups them into issues, and adds the context needed to understand what happened, alongside performance monitoring for slow requests and transactions.

Integration happens through official SDKs covering web, mobile, desktop, server and game platforms, from JavaScript, Python and PHP to Go, Rust, Java, Kotlin, Swift, Flutter, Unity, Unreal Engine and Godot. The server itself is a Python application built on Django, and topics also mention CSP report collection and application performance monitoring.

Sentry is source available, and its license is listed as 'Other' on GitHub rather than a standard open-source license. It can be run on your own infrastructure, and the company also operates the hosted service at sentry.io. It is used by engineering teams of all sizes as a first stop when something breaks in production.

Key features

Error and crash tracking
Application performance monitoring
Official SDKs for many languages and frameworks
Issue grouping with debugging context
CSP report collection
Self-hosted or hosted deployment

Good fit for

→Catching production exceptions in web apps
→Tracking crashes in mobile and game builds
→Finding slow transactions and endpoints

Built with: Python; Django
Tags: error-tracking; monitoring; apm; crash-reporting; devops; debugging; python; performance; observability

Sentry: questions and answers

What is Sentry used for?: Sentry is a developer-focused platform for error tracking and performance monitoring that helps teams detect, trace and fix issues, with SDKs for most programming languages. It is a good fit for catching production exceptions in web apps, tracking crashes in mobile and game builds, and finding slow transactions and endpoints.
Is Sentry open source?: Yes. Sentry is open source under a custom licence. Its source code is on GitHub at getsentry/sentry and is written mainly in Python.
Is Sentry free?: Yes. Sentry is open source, so the software itself is free to use under the terms of its own licence. A managed cloud version is also available, with paid plans from $26 per month.
Can I self-host Sentry?: Yes. Sentry can be self-hosted on your own server or infrastructure.
What is Sentry an alternative to?: Sentry is an open-source alternative to Rollbar, Bugsnag, Airbrake and Raygun. Other open-source alternatives to Rollbar include HyperDX, Sentry and Highlight.io.
Is Sentry actively maintained?: Yes. The most recent commit to Sentry was on 2 October 2026, and the latest release is 26.9.0, published on 15 September 2026. The project has 45k stars on GitHub.