Available on the Google Play store more than one million application can choose from and use it on your phone. But some laws prohibit the store to ask some types of applications, notably alternative applications stores, or applications that aim to provide pirated content.
Transroid

A popular application for managing BitTorrent files remotely, which allows you to use your phone to manage BitTorrent files that you download on your computer. Although the torrent application is not prohibited in the Google Play store, where there are many of them, including a copy of the light Transroid but the full version of the application are available outside the store. The application provides the ability to see the files that are loaded on your computer, change their priority, determine the maximum download speed, search for and download new files, and more features.
Xposed
Xposed platform provides an easy way for owners to customize your root and edit the phone without the need to install custom Romat.Platform is available for a large number of units Modules that the developers are different developed to provide endless options enables the user to modify the phone's performance, installation of themes, change the shape of the buttons, and much more.
MiXPlorer
I have no idea why this application is not available in the Google Play store, as it is not contrary to the laws of the store but it seems that the choice of the developer no more. MiXPlorer application is a sophisticated and advanced application for managing files supports 19 cloud service, and includes a photo gallery and an operator for audio files video, and a reader of PDF files and editor of the texts and so on. The application also offers advanced search features, and the presentation is excellent and the administration to, and supports read files stored on the external drive via a USB OTG across different file systems (FAT 32, NTFS, exFat), also supports the deal with a wide range of compressed file formats and much more.