Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.

Komodor - The Kubernetes native troubleshooting platform

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

Google StackDriver - Stackdriver provides monitoring services for cloud-powered applications.

ErrorFeed - Error tracking and exception handling for developers, startups, and freelancers.

ALog ConVerter - Server access log solution for finance and manufacturing