Android: There's no shortage of file browsers available for Android, but Solid Explorer Beta has raised the bar with a gorgeous UI and pro level features.
Inside the app you'll find a convenient dual-panel view with drag-and-drop support, an FTP client for file sharing, support for a variety of file types, indexed Dropbox searching and root file access. The ability to search by file type and specify filters is also a huge time saver.
But what really sets Solid Explorer apart is its beautiful design. Menus scroll smoothly, thumbnails load quickly, and the menus are easy to navigate. Solid Explorer Beta is free and compatible with Android 2.2 and above.