Crash & Exception

Axiom

Store up to 0.5 TB of logs with 30-day retention. Includes integrations with platforms like Vercel and advanced data querying with email/Discord notifiers.

https://axiom.co/

Bugsink

Error-tracking with Sentry-SDK compatibility. Free for up to 5,000 errors/month, or unlimited use when self-hosted.

https://www.bugsink.com/

bugsnag.com

Free for up to 2,000 errors/month after the initial trial

https://www.bugsnag.com/

CatchJS.com

JavaScript error tracking with screenshots and click trails. Free for open-source projects.

https://catchjs.com/

elmah.io

Error logging and uptime monitoring for web developers. Free Small Business subscription for open-source projects.

https://elmah.io/

Embrace

Mobile app monitoring. Free for small teams with up to 1 million user sessions per year.

https://embrace.io/

exceptionless

Real-time error, feature, log reporting, and more. Free for 3k events per month/1 user. Open source and easy to self-host for unlimited use.

https://exceptionless.com

GlitchTip

Simple, open-source error tracking. Compatible with open-source Sentry SDKs. 1000 events per month for free, or can self-host with no limits

https://glitchtip.com/

honeybadger.io

Exception, uptime, and cron monitoring. Free for small teams and open-source projects (12,000 errors/month).

https://www.honeybadger.io

Jam

Developer friendly bug reports in one click. Free plan with unlimited jams.

https://jam.dev

memfault.com

Cloud device observability and debugging platform. 100 devices free for Nordic, NXP, and Laird devices.

https://memfault.com

rollbar.com

Exception and error monitoring, free plan with 5,000 errors/month, unlimited users, 30 days retention

https://rollbar.com/

Semaphr

Free all-in-one kill switch for your mobile apps.

https://semaphr.com

sentry.io

Sentry tracks app exceptions in real-time and has a small free plan. Free for 5k errors per month/ 1 user, unrestricted use if self-hosted

https://sentry.io/

Vinktar

Error tracking and product analytics in one tool, set up and queried by your coding agent over MCP. Free for 1M events and 50k errors per month, no card required.

https://vinktar.com/

Whitespace

One-click bug reports straight in your browser. Free plan with unlimited recordings for personal use.

https://whitespace.dev