software security,
trial key,
activation key,
copy protection,
copyprotection,
anti-piracy,
license manager,
licence key manager,
license control,
network licensing,
software registration,
software locking,
trialware,
shareware author,
software development tool,
programming tool,
Windows, .NET, C/C++, C#, Visual Basic, Delphi,
Linux, C/C++, Kylix,
Byssus Hydra.