HakuNeko - HakuNeko is an all-in-one cross-platform utility that supports you to download manga and anime with various website support.
FTPbox - FTPbox is an open-source application that allows you to synchronize your files to your own host...
Hitomi Downloader - Desktop application to download images/videos/music/text from Hitomi.la and other sites, and more.
Dropbox - Online Sync and File Sharing
HDoujin Downloader - A powerful doujin/manga downloader that supports hundreds of different websites.
Syncany - Syncany is an open-source cloud storage and filesharing application.