If it is an open source license, see what they are built on and use that.
And yes, using anything built on certain license is free and encouraged.
I have been looking around at all type of business software including software that also handles Multi-level marketing through http://www.mlmasian.com . But I am still not sure if they have what I want? I need a high end conpensation plan program and another that can handle accounting? Any Recommendations of other websites or some products of CNET.
Thanks in advance