TrackJS JavaScript Error Logging - JavaScript Error Monitoring from TrackJS gives you context about what's happening in your end-users' browsers.
CKFinder - CKFinder is a powerful and easy to use Ajax file manager for web browsers.
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.
Flmngr - Free PHP File Manager
CatchJS - Unbloated, yet feature rich. CatchJS provides JavaScript Error Tracking the way it should be.
Tiny File Manager - Web based File Manager in PHP, Manage your files efficiently and easily with Tiny File Manager