Composer is an application-oriented package manager for the PHP scripting language.
The program is under the MIT license.
Composer is executed via the command line and installs dependencies of a PHP program.
Available PHP applications can be searched using the Packagist platform.
The main requirement for the target system is PHP version 5.3.2 and higher.
The Composer from Synfony is required in APPNER OS.
A detailed documentation of the composer can be found here:
https://getcomposer.org/doc/