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.
Bugfender - Cloud logging for your apps, not only crashes matter
Devo - Devo delivers real-time operational & business value from analytics on streaming and historical data to operations.
CatchJS - Unbloated, yet feature rich. CatchJS provides JavaScript Error Tracking the way it should be.