jDownloader is FREE and open source software that helps with downloading files from sites like Rapidshare.de and Megaupload.com.

It also lets you download YouTube videos.

It is written in Java and its source code available for anyone to modify.

Download these web sites, with or without premium account, automatically.

It also supports encrypted links sites, you should only paste these links and jDownloader will do the rest.

Features:

• Platform independent. (Windows, Linux, Mac, …)
• Runs on Java v1.5 or later
• Complete Open Source (GPL)
• Support the 24h
• Download several files in parallel
• Downloading with multiple connections
• JD has an own powerful OCR module (JAntiCaptcha)
• Decrypt RSDF, CCF and DLC file cabinets
• Plugins decryption for many services. Sj.org eg, UCMS, WordPress, RLSLOG …
• video and Mp3 Download: Youtube, Vimeo, clipfish
• Self-Extractor (including password list search) (Rar file)
• Support of topics
• Multilingual
• About 110 servers and over 300 plugins decryption
• Re JDLiveHeader Scripts connection with: (1400 router supported)
• Web Update
• Package Manager integrated additional modules (eg, Web Interface, Off the OS)