SessionStack!

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.

Light weight crash reporting solution, we find the needle in the haystack, even the exact line of code that your app crashed on.

Bugsnag automatically detects errors in your mobile, front-end, and back-end applications, and provides your team the tools to fix things fast. Bugsnag provides clear insights on the frequency and user impact of each error, so your team can make informed prioritization decisions. Replicating and troubleshooting is easier with automatically collected diagnostic data on where and how an error occurred. Over 3,500 of the world's best engineering teams from organizations like Square, Airbnb, Shopify, and others use Bugsnag to build better software. »

Airbrake collects errors generated by other applications, and aggregates the results for review.

Instabug provides in-app feedback and bug reporting to mobile apps. It provides a seamless way for two-way communication with users while providing detailed environment report for developers.It starts with integrating the SDK into your app in a process that takes less than a minute. Then whenever a user wants to send a feedback, all they need to do is shake the device to get a feedback form that includes a screenshot of the app that can be annotated. As soon as the user presses the submit button, the developer is notified instantly with a full environment report to check it. The developer can collaborate with the rest of the team on fixing the bugs reported by tagging, commenting, or assigning themInstabug also integrates with other bug tracking and project management tools that you can select to have your bugs forwarded there. And finally, you can use Instabug to communicate back to the user who reported the bug that the bug has been resolved. »

RootCause provides you with a comprehensive set of tools to monitor and reproduce errors in web sites/applications. Using the built-in recorder feature you’ll know exactly what the user did. After an error has been logged, head over to the web-based Replay Studio where you can replay the session to reproduce the error with one click.

FancyTrack - JavaScript Error Tracking library from @FancyGrid

Error tracking in real-time

Be alerted to bugs immediatelyReceive Slack notifications about problems immediately upon new release. Kuoll smartly merges JavaScript errors by stack traces.

Trakerr.IO - track errors, prioritize and fix them with the next generation application intelligence platform

A Better Way to Track JavaScript Errors

Web operations for development teams release tracking, error logging and team collaboration that you can set up in minutes.

ErrLytics is a JavaScript Error Reporting and Autotrack Analytics tool.