Sentry
FreemiumIndustry-standard application error tracking and monitoring
About Sentry
Sentry is an open-source application monitoring platform founded in 2012 with 39,000+ GitHub stars. It is the default error tracking tool across the software industry — when something breaks in production, Sentry is typically the first place developers look. It supports 100+ platforms and frameworks including JavaScript, Python, Go, Ruby, Java, iOS, Android, and React Native. Free developer tier includes 5,000 errors per month. Paid: $26/mo Team (50K errors, 1-hour data retention), $80/mo Business (custom retention, advanced integrations, SSO). Beyond basic error tracking, Sentry has expanded into session replay (watch a video of what the user was doing when the error occurred), performance monitoring (transaction traces, slow query detection), profiling (CPU and memory flame graphs), and cron monitoring. Each error captures full stack traces, breadcrumbs of user actions leading to the crash, device and browser context, and release version. The SDK auto-instruments in most frameworks with minimal setup. The self-hosted version is fully functional but Reddit threads consistently note it requires significant server resources — 8GB+ RAM for a comfortable deployment — making it more appropriate for teams with infrastructure expertise than small startups. Compared to Datadog APM: Sentry is error-centric with better developer UX; Datadog is infrastructure-centric with broader observability. Compared to Rollbar: nearly identical positioning; Sentry has better session replay and a larger community.
Key Features
Pricing Plans
Developer
- 5K errors/mo
- 1 user
- 30-day retention
Team
- 50K errors/mo
- Unlimited users
- Session replay
Business
- Custom retention
- SSO
- Advanced integrations
- Profiling
Pros
- Industry-standard error tracking — familiar to most developers
- 100+ platform and framework SDKs
- Session replay shows exactly what users experienced before an error
- Open source and self-hostable
- Performance monitoring and profiling in one tool
- Excellent stack trace and breadcrumb context per error
Cons
- Self-hosted requires significant server resources (8GB+ RAM)
- Pricing scales quickly with error volume at high traffic
- Session replay and performance monitoring add to cost
- Alert fatigue common without careful threshold tuning
- Can be noisy without proper grouping and filtering configuration
- Data retention limited on lower tiers
Best For
- Engineering teams that need the industry-standard error tracking tool their developers already know
- Teams wanting session replay alongside error context to diagnose user-reported bugs
- Organizations with 100+ platform diversity needing a single error tracking solution
Not Ideal For
- Teams needing broad infrastructure monitoring — Datadog or Grafana cover that better
- Self-hosting without dedicated DevOps capacity — resource requirements are significant
Potential Deal Breakers
- Error volume pricing means costs scale unpredictably with traffic spikes
- Self-hosted deployment requires 8GB+ RAM — not suitable for lightweight infrastructure
- Alert noise requires significant configuration investment before becoming signal-to-noise useful
Data & Privacy
Open-source and self-hostable for complete data control. Cloud version processes error data on GCP. No AI training on customer error data. EU data residency available on Business plan. Data retention configurable. SOC 2 Type 2 certified. Self-hosted option means all crash data stays on your infrastructure.
Who Is This For?
Hands-on tested May 2026
Signup Experience
Email, GitHub, or Google signup. Free Developer plan activates immediately with no credit card. Adding Sentry to a project takes about 10 minutes: install the SDK for your language, initialize it with the DSN key, and throw a test error to confirm events are flowing. The Sentry dashboard shows the first error within seconds of it occurring — stack trace, browser/OS context, user breadcrumbs, and release version all captured automatically. Source maps upload adds readable stack traces for minified JavaScript in another 10 minutes.
For Home Users
The standard tool for individual developers and open-source maintainers who want to know when their app breaks without users having to report it. The free Developer plan with 5000 errors per month covers most side projects and personal apps. Performance monitoring shows slow database queries and API calls. The free self-hosted option runs on Docker for developers who want unlimited events without paying. For home users without deployed applications, Sentry has no consumer use case — it is developer infrastructure.
For Business Users
Team at $26/mo covers 50000 errors per month, team member access, and issue assignment workflows. Business at $80/mo adds custom dashboards, rate limiting controls, and 90-day data retention. Enterprise pricing adds SLA, SAML SSO, and dedicated support. Sentry integrates with Slack, Jira, GitHub, and Linear to turn errors into actionable tickets automatically. The release tracking feature shows which deployment introduced a regression — essential for teams doing continuous deployment. For full-stack observability including infrastructure metrics and distributed tracing, Datadog or Grafana cover more ground. Sentry is the focused specialist for application-level error and performance monitoring.
Our Verdict
Sentry is the error tracking tool most developers expect to find in a mature engineering stack. Session replay is a genuine differentiator for diagnosing hard-to-reproduce bugs. The self-hosted version is powerful but resource-hungry. For teams that want cloud-managed error tracking with session context, the $26/mo Team plan covers the majority of use cases well.