Autobahn is a lightweight application that provides accelerated downloads and more reliable streaming video for popular applications and websites.

Autobahn will improve and optimize  your internet connection to improve your online experiance. Autobahn handles download requests from your web browser and applications and automatically improves downloads and streaming video.

Autobahn is currently accelerating all of your downloads through iTunes. With Autobahn for iTunes, you get the fastest downloads of music and videos through the iTunes store.

Autobahn does not use peer-to-peer transfers and does not use any upstream bandwidth.

Homepage - http://www.getautobahn.com
Download - http://updates.swarmcast.net/swarmcast/current/AutobahnAcceleratorInstall.exe
Size: 6.69 MB

VirtualProtect is a free program similar to Retunil, etc. Here are links that can help you find more info about it and download it:

Homepage - http://www.vpcache.com
Download - http://www.vpcache.com/dl/vp/vp2.2.1.rar
Manual - http://vprotect.meibu.com/dl/vp/vp20使用帮助.rar
Thread about it on Wilders Security Forums - http://www.wilderssecurity.com/showthread.php?p=1500706

Bywifi (Video Streaming Downloader) is a free program for downloading, transcoding and P2P accelerating video streaming. It supports downloading, transcoding and P2P accelerating videos from all video websites, such as Youtube, Dailymotion, Metacafe, MySpace, Yahoo, etc. Lots of advanced network technologies like P2SP (peer-to-server-and-peer), multiple tasks, web sensitive, intelligence caching are used in the software. The bitrate of video streaming is 3-5 times faster with bywifi than without it. Moreover, it can transcode videos into mobile formats for mobile phones and PDA.
The download url is http://www.bywifi.com/bywifi_file/download/bywifi_setup.exe

Software Features
1. P2P Accelerate Video Streaming:With P2SP (peer-to-server-and-peer), it speeds up downloading of video streaming. Its better algorithms have accelerated video downloading by more than 3--5 times.
2. Downloading Video: With automatically flash stream detection, video contents on many websites can be downloaded easily and free. The feature supports IE browser.
3. Transcoding Video: Videos can be transcoded into many formats supporting any mobile phones and PDAs, such as Nokia, iPhone, SamSung, iPad, iPod, and PSP.
4. Resume Video Automatically: For the same video, it does not need to buffer again when you close the Web Browser.
5. Search Hot Video: You can search video with bywifi. It is easy for u to watch the new, hot and cool video.
6. The software supports Windows 95, 98, Me, NT, 2000, XP, 2003, and Vista.