HsAudio C Source Library is an audio software library implemented in C language. HsAudio offers user applications a convenient API interface to the audio and sound functionality on Microsoft Windows, Apple MAC OS X and iPhone iOS.

HS X.25 is a software library in C (supplied with full source code) which implements ITU-T recommendation X.25. Includes RFC1613 Cisco XOT module for X.25 over IP applications.

HS TFTP is a software library in C (supplied with full source code) which implements Trivial File Transfer Protocol (TFTP) over UDP socket layer according to RFC 1350. Support for client and server side for both file get and put are provided.

HsSmsDLL is a Windows DLL enabling applications to send, receive, read and delete SMS messages via a GSM modem attached to COM port, according to GSM 07.05, 03.40. The library comes with integrated encryption AES,DES,3DES,ARC4,CAST128,Blowfish,2fish

HS POP3 is a software library in C (supplied with full source code) which implements the client side of Post Office Protocol Version 3 (POP3) over TCP socket layer according to RFC 1939. supports secure POP3 over TLS / SSL POP3S and RFC 2595

HS NTP is a software library in C (supplied with full source code) implements the client side of Network Time Protocol (NTP) over UDP socket layer according to RFC1769 and RFC1305. HS NTP Library allows to synchronise system time to NTP server time

HS GSM SMS is a C source library. It provides a PC based user application with access to a mobile phone's Short Message Service (SMS) function, according to ETSI standards: GSM 07.05 (ETS 300 585) (use of DTE for SMS), GSM 03.40 (SMS)

HsGpsDll is a Windows Dynamic Link Library which provides access to any NMEA-183 compliant GPS receiver via a serial communications port. HsGpsDll is designed for use from Visual C, C Sharp .NET, Visual Basic or other programming languages.

HS FTP is a software library in C (supplied with full source code) which implements the client side of the File Transfer Protocol over TCP socket layer according to RFC 959

HS COM is a serial communication library implemented in C language. HS COM runs on Windows and interfaces to Win32 serial communication API