HakuNeko - HakuNeko is an all-in-one cross-platform utility that supports you to download manga and anime with various website support.
Tapas - Tapas – Comic, Novel and Stories is free to use digital comic application by Tapas Media that puts tens of thousands of comics and web novel on your mobile device.
Hitomi Downloader - Desktop application to download images/videos/music/text from Hitomi.la and other sites, and more.
GlobalComix - Professional Comics Publishing
HDoujin Downloader - A powerful doujin/manga downloader that supports hundreds of different websites.
Comixology Unlimited - Netflix for comics and graphics novels by Amazon