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.

Utilizes standard Windows COM port drivers to tap into RS-232 transmit signals for monitoring bi-directional communications between two devices. (WinTECH Software)

A software toolkit that allows the IBM AS/400 to communicate with any system that supports standard BSD sockets. The software insulates the AS/400 programmer from intricate data communications programming and provides a interface usable by any AS/400 language. (ROI Corporation)

Toolkit for Internet software development, from Catalyst.

Provides tracing capabilities for the WinSock API calls. (WinTECH Software)

Two aplications are implemented in C# enables you to connect to a TCP based service behind a firewall even when the firewall blocks inbound TCP connections. [Freeware]

Win32 API trace/debugger spy for Windows 95/98/NT/2000. It monitors kernel, DDE, ODBC, COM, OLE, registry, serial, shell, MAPI, TAPI, Internet, window related APIs. (Systems Software Technology, Inc.)

WinSock Trace/Debug and data analysis tools for Win32. (Systems Software Technology, Inc.)

HTTP Trace/Debug and data analysis tools for Win32. (Systems Software Technology, Inc.)