FileSync (now FTPFileSync), was a pioneer in file sharing on mobile devices. FileSync was one of the first 1000 apps in the iOS AppStore, officially released in September 2008 In 2015, FTPFileSync was re-written from the ground up. In 2016, FTPFileSync was released as an Android app.
FTPFileSync allows you to easily sync one or more FTP servers with your Android device. Once the files are on your device you can view them with FTPFileSync or open them in other specialty apps.
Standard features include: sync with unlimited FTP servers, file viewer (including zip file support), media viewer/player, portrait or landscape views supported, app password protection, server settings password protection, search, print, PDF scrolling or paging, "Inbox/Open With" FTPFileSync support, and Action menu support (open files in other apps).