Web Developer

"Adds a menu and a toolbar with various web developer tools."

https://addons.mozilla.org/en-US/firefox/addon/60

Edu 2.0 - Web-hosted Learning Management

"Teach a traditional private class or an open public class using our free, web-hosted learning management system. ... Learn in an instructor-led class or at your own pace using our personalized study system. ... Benefit from 10,000+ community contributed resources including quizzes, experiments, web quests, projects and self-paced courses."

http://www.edu20.org/home

Direct Transfer

"DIRECTRANSFER.NET is the leading service for server to server file transfer and file hosting. Use our cutting edge solutions to i) transfer files from one ftp server to another bypassing your computer's hard drive; ii) host elaborite file libraries on our servers absolutely free; iii) use http remote uploads to upload files to your account or any ftp server; iv) share your files with others by simply giving them a file permalink; v) host images, embeded videos and other files to meet your web-hosting needs."

http://directransfer.net/