MyDownloader is an open source software written in C# that is almost a complete download manager. MyDownloader has many features to manage downloads:
1. Segmented downloads from HTTP and FTP
2. Allow downloads to be paused and resumed
3. Video Downloads
4. Speed Limit - to avoid to use all your bandwidth
5. Support for Auto-Downloads
6. Support for FTP site that requires authentication
7. Support for Mirrors
8. Download from HTTPS
9. (NEW) Download from authenticated HTTP urls
10. Notification download completion with sounds and XP balloon
11. Anti-virus integration
12. Batch downloads (enter a generic URL such as server/file(*).zip and MyDownloader generates a set of URLs with numbers or letters)
13. Move up / Move down button to change the order of download on download queue
14. Bug fixes and improvements
15. Web Spider (Web Crawler)
16. Support to convert downloaded videos to MPEG, AVI and MP3 (using ffmpeg)
17. Video file name suggestion based on video title
18. Clipboard Monitor
19. Internet Explorer Integration
20. Import URLs from file

Video Downloads
1. Support to download videos from: * YouTube * Google Video * Break * PutFile * Meta Cafe
2. Support to convert downloaded videos to MPEG, AVI and MP3 (using ffmpeg)
3. Video file name suggestion based on video title

Web Spider (Web Crawler)
1. Download all files from an specific page
2. Download all images from an specific page
3. Allow to filter URLs by extension or by name

Internet Explorer Integration
1. Download links when they are clicked and the user is holding the ALT key
2. When navigating tough an video site (YouTube, Google Video, etc), enable the video button to download the video with MyDownloader
3. Button to launch MyDownloader

The license of this software is Free, you can free download and free use this download manager software.