Blynk library for IoT boards. Works with Arduino, ESP32, ESP8266, Raspberry Pi, Particle, etc.

Open source SDR 4G software suite from Software Radio Systems (SRS) https://docs.srsran.com/projects/4g

Awesome-Cellular-Hacking

Open5GS is a C-language Open Source implementation for 5G Core and EPC, i.e. the core network of LTE/NR network (Release-17)

OpenMPTCProuter is an open source solution to aggregate multiple internet connections using Multipath TCP (MPTCP) on OpenWrt

A small Arduino library for GSM modules, that just works

An Open-source LTE Downlink/Uplink Eavesdropper

QCSuper is a tool communicating with Qualcomm-based phones and modems, allowing to capture raw 2G/3G/4G radio frames, among other things.

Taking one back for Steve Irwin 　 　 (๑•̀ㅂ•́)و

Step-by-step instructions to build a smartphone that is open-source, upgradeable, repairable, and Big Tech free.

EM7565/EM7455/MC7455 - Modem Configuration

Eliminate the excess latency and jitter terrorizing your 4G, 5G, LTE, Starlink or other variable rate connection!

Botletics SIM7000 LTE CAT-M1/NB-IoT Shield for Arduino

Lightweight cellular modem host AT library

Android Telephony SDK bridge with some additional features

4G/LTE softmod for the Parrot Disco

Portable C libraries which provide APIs to build applications with u-blox products and services. Delivered as add-on to existing microcontroller and RTOS SDKs.

FALCON - Fast Analysis of LTE Control channels

This project adapts ADMINLTE 3 so the components can be used from dotnet core Blazor / Server / Web Assembly

An open source 3GPP LTE implementation.