Sentry

Error tracking and performance monitoring that tells developers exactly what broke and why.

Freemium Web ★ 4 editorial
398
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Sentry logo — Error tracking and performance monitoring that tells developers exactly what broke and why.

Quick Summary

Sentry automatically captures application errors and performance issues in production, showing developers the exact stack trace, affected users, and surrounding context needed to diagnose and fix a bug — replacing the older workflow of waiting for user bug reports and trying to reproduce issues blind. It supports nearly every major programming language and framework, making it a common default for engineering teams monitoring production applications.

Pricing: Freemium Platforms: Web Editorial rating: 4 / 5 Category: Observability Tools Origin: San Francisco, California, USA

Sentry at a Glance

Category Observability Tools
Pricing model Freemium
Starting price $0 (free plan available)
Platforms Web
Editorial rating ★ 4 / 5 (Kreemhunt staff score)
Launched 2012
Headquarters San Francisco, California, USA
Best for Error tracking and performance monitoring that tells developers exactly what broke and why.
Community votes 398

Pros

  • Captures full stack traces and context automatically, eliminating guesswork in bug diagnosis
  • Supports nearly every major programming language and framework via SDKs
  • Groups related errors intelligently, avoiding alert fatigue from duplicate issue notifications
  • Open-source core allows self-hosting for teams wanting full infrastructure control
  • Performance monitoring extends beyond pure error tracking into latency and transaction analysis

Cons

  • Free tier's 5,000 monthly error limit is easily exceeded by even moderately trafficked applications
  • Pricing scales with error/event volume, which can become significant for high-traffic applications
  • Self-hosting the open-source version requires real DevOps capability to maintain
  • Initial SDK integration and configuration takes real setup time across a codebase
  • Some advanced features reserved for Business tier or above

Sentry Pricing Plans

Official pricing as published by Sentry. Verify current rates before purchasing.

Developer

$0

  • 1 user
  • 5,000 errors/month
  • 30-day data retention
Get Sentry →

Team

$26 /month (starting)

  • Unlimited users
  • 50,000 errors/month
  • Performance monitoring
Get Sentry →

Business

$80 /month (starting)

  • Advanced quota management
  • SSO
  • Priority support
Get Sentry →

Sentry automatically captures application errors and performance issues in production, showing developers the exact stack trace, affected users, and surrounding context needed to diagnose and fix a bug — replacing the older workflow of waiting for user bug reports and trying to reproduce issues blind. It supports nearly every major programming language and framework, making it a common default for engineering teams monitoring production applications.

What Makes Sentry Stand Out

Captures full stack traces and context automatically, eliminating guesswork in bug diagnosis. Supports nearly every major programming language and framework via SDKs

Groups related errors intelligently, avoiding alert fatigue from duplicate issue notifications

Pricing and Plans

Sentry offers a free tier that provides meaningful value for individuals and small teams, with paid plans unlocking additional capabilities as needs grow.

Who Should Use Sentry

Sentry is best for teams and individuals who need observability tools capabilities and where captures full stack traces and context automatically, eliminating guesswork in bug diagnosis. It may not be the right fit when free tier's 5,000 monthly error limit is easily exceeded by even moderately trafficked applications.

Verdict

Sentry delivers on its core promise as a observability tools tool. Sentry automatically captures application errors and performance issues in production, showing devel... For teams evaluating observability tools options, Sentry is worth considering based on its specific strengths and how they align with your requirements.

Overall rating: 4.3 / 5

Sentry is the error tracking and application monitoring platform used by over 90,000 organizations to capture, triage, and fix software bugs in production. Founded in 2012 and initially open-source, Sentry has become the de facto standard for application error tracking across web and mobile platforms.

Why Error Tracking Matters

Most production bugs are discovered by users before developers — users experience crashes, errors, or unexpected behavior and report them (or simply leave). By the time a developer investigates a bug report, the context that would help diagnose it (browser version, network state, user actions leading to the error, the exact error message and stack trace) has evaporated.

Sentry captures this context automatically at the moment of error occurrence: the full stack trace, the user's browser/device, the page state, the user's previous actions (breadcrumbs), the specific code line that raised the exception, and any custom context the developer has added. This forensic record enables developers to reproduce and understand bugs without waiting for another occurrence.

Error Grouping and Issue Management

Sentry doesn't simply log every error — it groups similar errors into "issues" using fingerprinting algorithms. Ten thousand users hitting the same undefined variable error appear as one issue with a count of 10,000 occurrences, rather than 10,000 separate entries. This grouping enables prioritizing the bugs affecting the most users first.

Each issue shows a trend graph of occurrences over time, which users and releases are affected, and whether the issue is new or a regression. Integrations with GitHub, GitLab, and Jira enable linking issues to specific code commits and creating tickets directly from Sentry.

Performance Monitoring

Sentry's expansion into performance monitoring provides transaction tracing — showing the full timeline of a web request or API call, with each component's duration. Slow database queries, blocking API calls, or rendering bottlenecks appear as annotated spans in a waterfall view that identifies exactly where time is spent.

This performance context connects application errors to performance degradation: a database timeout that causes an exception appears with the query that triggered it, enabling root cause analysis that spans application layers.

Session Replay

Sentry's Session Replay records user interactions (clicks, scrolls, form inputs) in the minutes before an error occurs, providing a "video replay" of the user journey that produced the error. This visual context often reveals the specific sequence of interactions that triggers a bug that would otherwise be difficult to reproduce.

Pricing

Sentry's free tier provides 5,000 monthly errors, 10K performance units, and 50 session replays — useful for small applications and personal projects. Team ($26/month) adds 50K errors, unlimited collaborators, and GitHub integration. Business and Enterprise tiers add unlimited data retention, custom dashboards, and enterprise SSO.

Overall rating: 4.2 / 5

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