Safari Download Manager is described as 'extension for jailbroken iPhones that adds a download manager to the web browser. It allows you to download files to your iPhone, which can then be viewed with the app iFile' and is an app in the Web Browsers category. There are three alternatives to Safari Download Manager for iPhone and iPad. The best alternative is dTunes, which is free. Other great apps like Safari Download Manager are Azul Media Player (Paid) and Mewseek (Paid).
dTunes is an iTunes equivalent for jailbroken iPhones and iPod Touches. It plays downloaded music and video files and torrents, and provides direct access to music and video sites for downloading files. You can only get dTunes from Cydia (on jailbroken iOS devices).
MewSeek is a native P2P (peer to peer) client that lets you search and download music for free on your iPhone or iPod Touch with a 3G, EDGE, or WiFi connection. Downloaded music can then be added to your iPod library.