Catalyst will tell you when your webapp breaks and help you fix it, so you can spend more time building and less time keeping your webapp up.
Cost / License
- Paid
- Proprietary
Application type
Platforms
- Online




Sentry is described as 'Monitors applications for real-time errors, sending alerts via email, SMS, or chat, showing detailed diagnostic information and release impact for quick troubleshooting' and is a Error Logger in the development category. There are more than 100 alternatives to Sentry for a variety of platforms, including Web-based, SaaS, Self-Hosted, Mac and Linux apps. The best Sentry alternative is Better Stack. It's not free, so if you're looking for a free alternative, you could try Better Stack or GlitchTip. Other great apps like Sentry are HyperDX, Rollbar, TrackJS and Honeybadger.
Catalyst will tell you when your webapp breaks and help you fix it, so you can spend more time building and less time keeping your webapp up.




highlight.io is a monitoring tool for the next generation of developers (like you!). Unlike the age-old, outdated tools out there, we aim to build a cohesive, modern and fully-featured monitoring solution, something we wished WE had. And it's all open source.



Uptime monitoring and status pages for indie SaaS and production AI agents (OpenClaw, agent APIs) — setup in minutes, not another observability suite.




Logentries is a cloud-based service for log collection, correlation, and presentation in a meaningful way. Logentries is reliable and extremely scalable service providing real-time alerts, regular-expression search, graphing and visualization for thousands of users.
Loggly is a cloud-based log management service built on top of a powerful search engine. With Loggly, you can collect logs from your servers then quickly search them with an intuitive user interface. We make looking at logs fun again!




Real-time application monitoring and exception reporting so you can analyze and improve your apps and deliver rock-solid solutions that behave as expected across all usage scenarios.




FastAPI AlertEngine is incident command for teams that answer to compliance — not just monitoring.

Logit.io is used for a wide variety of use cases including log management, business intelligence, SIEM, APM, container monitoring, infrastructure monitoring, monitoring website uptime, measuring sales performance & vulnerability scanning.


Debugging assistant for developers. Samebug provides resources to help you fix crashes efficiently.




Web operations for development teams release tracking, error logging and team collaboration that you can set up in minutes.
Errordeck is an error monitoring and handling service that will help you find and help taking care of errors.



Healthchecks.io is a service for monitoring cron jobs and similar periodic processes:



