A command-line utility to lookup a callsign in the FCC's Universal Licensing System database

callook

Query the Canadian Amateur Radio Callsign Database

callsigns

A Node.JS interface for sending command to rigctl

read and write Amateur Data Interchange Format (ADIF)

A Javascript connector class for amateur radio KISS connections that encodes, compresses, decompresses, and decodes KISS + AX.25 frames.

It is a library that allows a rigorous validation of the data, according to a specific pattern (a scheme).

CLI to lookup someone on QRZ.com (a site for ham radio operators)

Simple AX.25 Implementation for Packet Radio