GlitchTip's open source platform makes monitoring software easy. Track errors, monitor performance, check site uptime all in one place. Compatible with Sentry client SDK but easier to run and entirely open source.




The best free alternative to Sentry is GlitchTip, which is also Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Sentry and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Sentry are Better Stack, HyperDX, Rollbar and Honeybadger.
GlitchTip's open source platform makes monitoring software easy. Track errors, monitor performance, check site uptime all in one place. Compatible with Sentry client SDK but easier to run and entirely open source.




AI-driven SRE platform offering real-time infrastructure monitoring, incident management, log analytics, traces, error tracking, metrics, real user monitoring, status pages, and a warehouse, with full data ingestion, centralized dashboard, custom alerts, and reduced costs.




Rollbar collects errors that happen in your application, notifies you, and analyzes them so you can debug and fix them. JavaScript, Ruby, Python, PHP, Node.js, Android, Flash, .NET, and Java libraries are available.



Honeybadger is an application health monitoring tool built by developers for developers. It's everything you need to keep production happy—and nothing you don't.




Logstash is an open source, server-side data processing pipeline that ingests data from a multitude of sources simultaneously, transforms it, and then sends it to your favorite "stash.".



Pinpoint and solve performance issues in your Ruby, Java, .NET, PHP and Python apps with real user, application and server monitoring.

Open source observability platform. SigNoz helps developers find issues in their deployed applications & solve them quickly.




Instabug/We deliver Real-Time Contextual Insights throughout the entire mobile app lifecycle, empowering mobile teams to connect with customers, accelerate their workflow, and release with confidence.




Errsole is a free open-source logger for Node.js applications. It comes with a built-in log viewer to view, filter, and search your application logs.




Unify your cloud-native monitoring with zero-code eBPF, advanced profiling, and 10x storage efficiency.




Monitoring for Ruby & Elixir developers. All the metrics and alerts you need to keep your app running smooth. Support for Rails, Rack, Sinatra, Padrino & Grape.




Much easier to deploy to Kubernetes cluster for small/medium websites