Turn your Android phone into Amateur Radio Codec2/OPUS APRS enabled DV handheld transceiver (Bluetooth/BLE/USB/TCPIP KISS/Sound modem client for DV digital voice communication)

LoRa ESP32 KISS Bluetooth modem (for APRSDroid or aprs.fi iOS) + APRS-IS RX/TX iGate over WiFi + Digipeater + DV (with Codec2 Walkie-Talkie)

A free, open-source, multi-platform application for sending files and messages, using the codec2 HF modems

A simple mesh network communications app powered by the Reticulum Network Stack.

ESP32 based Codec2/OPUS DV hobby UHF handheld transceiver aka walkie-talkie

Codec2 low bit rate audio codec Arduino library for ESP32

Python's interface to codec 2

Arduino Micro LoRA/FSK USB KISS modem (for Linux AX.25, APRSDroid, Codec2Talkie) or standalone APRS AX.25 micro digirepeater

The Codec 2 speech codec, compiled to WASM using Emscripten.

Wireless Codec2 compressed audio transport over ESPNow using ESP32 micro controller.

Rowetel Codec 2 for iOS

Android app to record and playback voice (450 to 3200bps), based on the highly effective Codec2 library

Open source speech codec designed for communications quality speech between 450 and 3200 bit/s. The main application is low bandwidth HF/VHF digital radio.

Digital HAM radio library based on code from DroidStar

A GUI in Qt for recording speech using Codec2

Qt wrappers for codec2 speech codec