This article is from the FAQ, by with numerous contributions by others.
The WinSock community has been very fortunate to have many freeware
applications available. For this, everyone should be grateful to the
many authors who have put many countless hours writing these programs.
However, not all winsock applications are freeware. Many are
shareware, and shareware is NOT the same as freeware. Please use your
conscience. If you try out a shareware program and find it to be
useful, send in the registration fee. The prices are usually quite
reasonable. Moreover, it encourages and enables further development of
many great applications.