We are using GNU GPL3 for QMS QSystem

Specifically, free software means users have the four essential freedoms: (0) to run the program, (1) to study and change the program in source code form, (2) to redistribute exact copies, and (3) to distribute modified versions.

Software differs from material objects—such as chairs, sandwiches, and gasoline—in that it can be copied and changed much more easily. These facilities are why software is useful; we believe a program's users should be free to take advantage of them, not solely its developer.

Software OMS QSystem licensed by GNU GPL3. Text the license you can read here The GNU General Public License v3.0

Comments how to use the license you can read here. Good luck for using open source software!