RootCause!

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.

Logmatic.io is an Operations Data Platform for Log and Machine events. We help companies improve their software and business performance by leveraging their machine data.

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.

Error tracking, uptime monitoring, and performance metrics you'll love.

SessionStack helps you see your web app defects through a user’s eyes.

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. »

FancyTrack - JavaScript Error Tracking library from @FancyGrid

Ever had a but that happens to one of your users but you can't reproduce? What if the user is a mobile app user that's miles away from you?Most developers debug their apps by looking at the logs generated by their application. Usually this means connecting the mobile device with a debugging cable and looking into NSLogs or logcat.Bugfender is a cloud storage service with an easy to use SDK that lets developers send their application logs for later use. Works for early development phases, beta testing and production applications.Bugfender unlocks the possibility to detect errors earlier, assist better users who contact your customer support and ultimately achieve an excellent customer satisfaction.Bugfender represents a new opportunity, log collection services have existed for years on the back-end and network monitoring industry but never applied yet to mobile devices. »

A Better Way to Track JavaScript Errors

Errorception is a simple and painless way to find out about JavaScript errors, as they occur in your users' browsers. All you need to do is insert a script tag on your page, and you will start recording errors as they happen in real-time.

Honeybadger is the modern error management service for rails