Movgrab is a command-line movie downloader for sites like YouTube. It has no dependencies; everything that's needed should be there in the tar.gz package. Movgrab can connect through an HTTP proxy, can output the download to stdout for piping into another program, and can fork into the background to free up the console. When forked into the background, its progress can still be seen in a ps list.
getxbook is a collection of tools to download books from websites. There are tools to download from Google Books' "book preview", Amazon's "look inside the book", and Barnes and Noble's "book viewer". There is an optional GUI written in Tcl/Tk, and some shell scripts using OCR to create plain text or searchable PDFs and DjVu files from the downloaded books.
Xtreme Download Manager is a advanced and powerful tool to increase download speed up to 500%, resume broken/dead downloads, capture FLV videos from any site, and schedule downloads. It uses a sophisticated dynamic segmentation algorithm, data compression, and connection reuse to speed up the download process. It supports HTTP, HTTPS, and FTP protocols, firewalls, proxy servers, file redirects, cookies, authorization, etc. It seamlessly integrates with Firefox on any operating system. It also integrates with any other browser to handle downloads automatically using advanced browser integration. It is entirely written in Java, so it runs on any operating system without even being installed.
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.
Downloadermac is a Cocoa application for downloading items from the Internet. It frees up your browser for other tasks by reducing the load on your Web browser's process by creating a thread just for downloading items.(e.g. firefox-bin, safari). It is tested on both Panther (10.3.9) and Leopard (10.5).