From ReactOS

Rosapps stands for ReactOS Applications. It is a bunch of applications developed along with ReactOS, but not essential to its functionality.

Instructions

If you have a Build Environment setup, follow the following steps:

• Check out with subversion svn://svn.reactos.org/reactos/trunk/rosapps
• Copy this folder to .../reactos/modules/, where reactos is the directory where you checked out the ReactOS source itself. Do not copy its contents there, but copy the rosapps folder itself. Alternatively you can create a symbolic link instead. To build "rosapps" there are two paths. See below for more details.
  • 1. copy the rosapps folder into the reactos\modules folder
  • 2. link reactos/modules/rosapps to rosapps

  UNIX
       cd ${ROS_SRC_ROOT}/reactos/modules
       ln -s ${ROS_SRC_ROOT}/rosapps rosapps
  WINDOWS
       cd %ROS_SRC_ROOT%\reactos\modules
       junction rosapps %ROS_SRC_ROOT%\rosapps

• Eventually you can run "make depends" in the \reactos directory to compile it.