Videomanager is a Web-based video manager. It's not a Youtube/Vimeo clone, it just provides the core functionality of uploading, converting, and displaying videos. Commercial support is also available, as well as enterprise features like distributed rendering, tracking, and live streaming.
Jaksta Video Converter for Mac is an ultra fast, easy-to-use converter specifically designed to convert large video files to many popular devices like iPad, iPhone, and Apple TV. Its speed comes from its "smart converter" technology which analyzes a video and converts only what's necessary to get the video to play on your desired device. It handles most popular formats including AVI, Flash, Windows Media, and AVCHD, and will even convert BitTorrent files. It can convert several video files at once, and can often convert a two hour movie in just a few minutes.
Boilsoft Video Converter for Mac converts between popular video formats, including .flv/flash, 3GP, AVI, DVD, FLV, MOV, MP4, MPEG, PSP MP4, RM, SVCD, VCD, VOB, WMV, and iPod Mp4. It lets you preview video before it gets converted, add watermarks to the video to be converted, convert a batch of videos in different or the same formats to one specified format, clip and convert a certain video segment as you like, customize output parameters, and more.