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

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• Updated Nov 11, 2026
• JavaScript

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)

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• Updated Feb 24, 2026
• Java

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

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• Updated Apr 1, 2026
• C++

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

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• Updated Oct 1, 2026
• Python

ESP32 based Codec2/OPUS DV hobby UHF 3d printed handheld transceiver aka walkie-talkie

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• Updated Feb 28, 2026
• C++

Codec2 low bit rate audio codec Arduino library for ESP32

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• Updated Jan 6, 2026
• C

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

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• Updated Apr 14, 2025
• nesC

Python's interface to codec 2

voice speech codec2

• Updated Dec 27, 2025
• Cython

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

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• Updated Apr 27, 2023
• JavaScript

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

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• Updated Mar 29, 2025
• C

Rowetel Codec 2 for iOS

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• Updated May 22, 2023
• Swift

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.

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• Updated Sep 13, 2026
• C

Offline LoRa map-messenger toy for kids — runs on the M5Stack Cardputer ADV + LoRa (SX1262) Cap with GPS. Friends on a map, GPS navigation (arrow/distance/altitude), text & voice messages, markers and route recording. Peer-to-peer, no phone, SIM or internet.

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• Updated Jun 4, 2026
• C++

Digital HAM radio library based on code from DroidStar

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• Updated Feb 10, 2024
• C++

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

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• Updated Jul 18, 2022
• C

Experimental Meshtastic-Android research fork: offline 24kHz Neural Audio (WavTokenizer @ 900bps), Selective-Repeat ARQ, and Tactical Half-Duplex Live PTT over stock LoRa firmware.

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• Updated Oct 22, 2026
• Kotlin

Meshtastic users hate this one weird trick. Voice-over-FSK walkie-talkie on ESP32-S3 + SX1262. Codec2 3200, 19.2 kbps FSK. Operated with the utmost respect for the RF spectrum.

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• Updated Sep 7, 2026
• C++

RK3588 播放、显示与游戏图形的可回退升级：Codec2/MPP、AFBC、十位 HDR、帧率匹配/QMS、Mali GPU/KMD/CSF 与播放器修复。Firmware-pinned Android 12 modules with per-feature rollback.

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• Updated Oct 20, 2026
• C

🚀 Build real-time apps with Sideband, a peer-to-peer communication stack for Bun and TypeScript, featuring an intuitive protocol, RPC, and client helpers.

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• Updated Oct 12, 2026
• TypeScript

无网络野外沟通：手机之间只靠 BLE 自组多跳 Mesh，传文本、快捷符号、小图片、Codec2 条式语音、定位与 SOS、连续轨迹记录包。无服务器、无账号、全程离线。Android · Kotlin · Compose · WLP/1 协议

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• Updated Sep 10, 2026
• Kotlin