APK File:Android PacKage is the package file format used by the Android operating system for distribution and installation of mobile apps and middleware. APK files are analogous to other software packages such as APPX in Microsoft Windows or a Debian package in Debian-based operating systems like Ubuntu.
ZIP File:ZIP is an archive file format that supports lossless data compression. A ZIP file may contain one or more files or directories that may have been compressed. The ZIP file format permits a number of compression algorithms, though DEFLATE is the most common.
EXE File:.exe is a common filename extension denoting an executable file for DOS, OpenVMS, Microsoft Windows, Symbian or OS/2. Besides the executable program, many .exe files contain other components called resources, such as bitmap graphics and icons which the executable program may use for its graphical user interface.
RAR File: RAR is a proprietary archive file format that supports data compression, error recovery and file spanning. It was developed by a Russian software engineer, Eugene Roshal and the RAR software is licensed by win.rar GmbH.
MKV File: The Matroska Multimedia Container is an open standard, free container format, a file format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is a universal format for storing common multimedia content, like movies or TV shows.