Preamble In an ideal world, all software would be free. In the real world, however, many people cannot afford to give away what they create because they do not have sufficient income from other sources. Shareware is the accepted compromise for stand-alone programs.
Users only have to pay if the software is useful.
SYPP provides an equivalent compromise for libraries of code by asking the program's author to share the profits from the program with the library's author. The Software is free for non-commercial development. The Software is free during the initial evaluation. Shareware is considered a commercial use, so it requires a license agreement. However, one is only required to pay a one-time library shareware fee for the Software and only after the program has brought in 10 times as much as the library shareware fee.