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.




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 50 alternatives to Sentry for a variety of platforms, including Web-based, SaaS, Self-Hosted, Mac and Linux apps. The best Sentry alternative is GlitchTip, which is both free and Open Source. Other great apps like Sentry are Better Stack, Datadog, HyperDX and Rollbar.
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 Unlike the age-old, outdated tools out there, we aim to build a cohesive, modern and fully-featured monitoring solution, something we wished WE had.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.



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.




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.



IQLECT is the creator of Ampere, a real-time big data analytics platform. Various apps for data center infrastructure monitoring, clickstream analysis, log analysis and others can be deployed on the platform.





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



