Shareware is a term for kinds of programs that have freely distributable versions (usually, but not always without an accompanying source code), but that encourage people to pay for enabling more features, or otherwise using them for prolonged periods of time after the trial time.
Solitaire Implementations Edit
Computerised Solitaire solvers Edit
- Don Woods' Solitaire Solver - proclaims that in the source code's opening comment. The source code was later modified by Adrian Ettlinger and Wilson Callan, and has been released as open source as part of FreeCell Pro.