ZylSerialPort is a Delphi / C++Builder thread based asynchronous serial port component. Use ZylSerialPort component to easily communicate with external devices on serial port connection, such as modems, bar code readers and so on.
SSLSocket Wizard ActiveX 3.0 - SSL Socket Wizard allows you to easily communicate to a remote server using the TCP protocol and also adds the ability to use Secure Socket Layer protection to the channel.
cryptlib 3.0 - Security toolkit with strong encryption and authentication. Supports many algorithms for symmetric/asymmetric encryption, authentication, and hashing. Free for non-commercial/shareware projects. Written in C. ActiveX and C++ wrappers are available.
