Swsim offers a software‑based SIM card emulator

Swsim is an open-source project that emulates a SIM card in software. The repository provides code to simulate SIM functionality for testing purposes. It enables developers to run mobile network simulations without physical hardware. The software aims to streamline development and debugging of telecom applications. Documentation includes instructions for building and integrating the simulator. The project is hosted on GitHub and invites contributions from the community. Swsim can be used to prototype services that interact with SIM card interfaces. Future updates may add support for additional network protocols and features.