ITU-T X.25 Protocol Module (with RFC1613 XOT) - C Source Library (supplied with full source code) implements ITU-T recommendation X.25 - Interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating in the packet mode. HS X.25 includes HsDL (Data Link with RFC1613 Cisco Mode XOT) and HsSock (Winsock interface) for X.25 over TCP applications

Country Codes is a small database of country codes and additional information for more than 250 countries. It displays their location (continent), ISO 3166-1 Alpha 2-3 codes and ISO number as well as IDDD code and flag, NDD Code, Country Dialing Code, FIPS PUB 10-4 and TLD (Top Level Domain) code and the current time in the country, Distinguishing sign, IOC Code, ISO Currency Code and language abbreviation 3-char name.

ModemTest performs low level testing of dial up modems and telephone lines. Testing is preferably done with two modems but a single modem can also be used. Tests are independent of ISP and TCP/IP settings. ModemTest logs any data corruption and incorporates a modem speed test which reports the initial connection speed and the actual throughput. ModemTest helps to isolate faults with your ISP, dial up modem and telephone line.