Danbooru!

The Hydrus network client is a desktop application written for Anonymous and other internet-fluent media nerds who have large image/swf collections. It organises your files into an internal database and browses them with tags instead of folders, a little like a *booru on your desktop. Tags and files can be anonymously shared through custom servers that any user may run. Everything is free, and the source code is included with the release. It is developed mostly for Windows, but fairly functional builds for Linux and OS X are available. »

Imageboard dedicated to high resolution anime scans, ecchi scans, hentai scans, moe scans, and bishoujo scans.

Imageboard dedicated to anime, manga, and Japanese games wallpapers / backgrounds.