What is Sentry?
Sentry is an application-monitoring platform covering error and exception tracking, performance/tracing, and session replay across most major languages and frameworks. Founded in 2012 out of a two-person open-source project, it is headquartered in San Francisco with additional offices in Vienna and Toronto. Sentry's core is open source, with a free self-hosted edition and a hosted SaaS offering free and paid tiers.
Read the full overview
Sources checked 27 September 2026: official website, documentation, GitHub repository, About Sentry.
Key capabilities
- Error tracking: exception capture with stack traces, release and environment context.
- Performance monitoring: distributed tracing across services.
- Session replay: reproduce the user session around a reported error.
- Self-hosting: open-source edition deployable on your own infrastructure.
Validate SDK coverage for your languages/frameworks, event-volume pricing at your expected scale, data-retention settings, and whether self-hosting or the SaaS plan better fits your compliance needs.
Shortlist Sentry when you need error and performance visibility integrated with your deploy pipeline and want the option to self-host. Compare its event-volume-based pricing and retention limits against your traffic before committing to a paid plan.
Sentry's decade-plus track record and open-source core make it a common baseline for error monitoring; confirm current plan limits directly since Sentry's pricing is usage-based and changes over time.
Technical details
- Access
- Self-hosted
- Source model
- Open source
- Founded
- 2012
- Headquarters
- San Francisco, California, USA
- Pricing model
- Freemium
- API
- Available
- Published release
- Sentry 26.9.0 ↗ (checked )
- Source check
- Primary source ↗ checked
- Website
- sentry.io ↗
Official resources
What to verify for your environment
Start from the users, systems and operating responsibilities the tool needs to support.
- Confirm current features, licensing and support terms with the publisher.
- Validate deployment, data location, access control, backup and recovery requirements.
- Test integrations, export paths and a representative operational workflow before committing.
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Reviews of Sentry
Error tracking that actually helps4/5 starsSentry catches errors we would never find through manual testing. The stack traces with source maps, breadcrumbs showing what the user did before the error, and session replays make debugging production issues 10x faster. The free tier is enough for small projects.
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