We developed a program to download rtmpe streams & transcode them to mpeg-2 video or mpeg-4 videos (currently half finished, only the download feature is available), it is able to browse and download video clips from video hosting websites of HTTP, RTMP, RTMPT, RTMPE, RTMPTE protocol, and these cover overwhelming majority of websites such as Hulu, Veoh, YouTube, Yahoo Video, etc.
Any FLV Downloader is freeware (but not open-source)
Enjoy!