Videopian is a PHP class that allows you to get any kind of information (such as title, description, author, duration, or flash player URL) about a video hosted on a video sharing service, just by its URL. The currently supported services are Blip, Dailymotion, Flickr (API key required), Google Video, Metacafe, MySpace, Veoh (API key required), Vimeo, and YouTube.
YourTube is a YouTube video downloader for mobile phones that support J2ME. Its main features are the ability to search YouTube videos, support for multiple video formats (MP4, FLV, 3GP), support for background downloading, and a download queue. The minimum requirements are MIDP-2.0, CLDC-1.0, and JSR 75 (File Connection API).
Elmedia Player PRO makes it easy to download videos from online sources such as YouTube, Vimeo, DailyMotion, Metacafe, and many others. Using it is just a matter of entering the link to the page with your desired video in Elmedia Player and choosing the content you want to download from the list. When you are downloading SWF files, you are given the option to preview all external resources used by the SWF animation. You can download them along with the SWF file if you wish, or even download just the external resources without the initial SWF. Other features include full-screen mode, "Always on top" mode, the ability to make screenshots of your favorite movie moments, and the ability to convert the whole movie into a series of images.
Jaksta is an easy way to download and convert video, audio, and MP3s from the Web to your Mac. Just open Jaksta, then play a video or song in your browser, and Jaksta saves a copy to your Mac's hard disk, or converts it to several popular device formats. It works with thousands of sites, including YouTube and Facebook, as well as popular music sites.