Internet Direct (Indy) - An open source internet component suite comprised of
popular internet protocols that is included in both Delphi 6 and Kylix.
Both client and server implementations are included as well as full source code
and comprehensive demos
Indy is an open source internet development library for the Borland product
line which is based completely on blocking sockets. The Client components are
easy to use because you write your transactions in a sequence and the servers
are multithreaded.