YoRapid.com Search Extension - Firefox Addon is a search engine designed to search files in various file sharing and uploading sites with Online File Availability Checker.
Don't browse thousands of message boards and blogs for file links to locate any type of downloadable file ever uploaded to various file sharing site
Torrents Search (multiple torrent sites) - Firefox Addon - Torrents search for Firefox. Lets you search a constantly updated collection of torrent resources at once. Torrents search is easy to customize enabling you to enhance your torrent finding experience in your browser
MultiFileSearch - the best search engine for Rapidshare and 4shared.com - Firefox Addon - MultiFileSearch finds any file hosted on Rapidshare or 4shared (Rapidshare.com 4shared.com). This is the best and the fastest search engine for firefox
Rapidshare Files Search - Firefox Addon - Search engine powered by Google to search all over the internet for files on Rapidshare. Useful for those who have a rapidshare account and want to download something from there, searching for files on the internet