Error tracking with stack traces, release attribution and now session replay.
Sentry captures unhandled exceptions with full stack traces, breadcrumbs, release and commit attribution, and groups them into actionable issues rather than a log stream. Performance monitoring, cron monitoring, session replay and uptime checks have been added around that core. It is open source and self-hostable.
Best for
From $26 per month (Team plan, indicative)
Free tierFree tier: Free developer plan with a monthly error and replay allowance.
What drives the bill: Event-volume pricing. A noisy application can consume the quota quickly, so filtering matters.
Check current pricing on Functional Software (Sentry)’s siteFigures are indicative and were last reviewed August 2026. Vendors change pricing often; confirm before you commit.
No reviews of Sentry yet. If you have used it in anger, yours would be the first.
If Sentry is not the right fit, these solve the same problem differently.
Session Replay
Session replay built for engineers: console, network, Redux state and stack traces.
Monitoring
Synthetic checks correlated with APM traces, logs and infrastructure metrics.
Monitoring
Scripted browser and API monitors included in New Relic's usage-based platform.