GoKawiilNew open-source tool esp32sim emulates four ESP32 chips in the browser via Rust
A developer released esp32sim, a Rust-based emulator covering ESP32, ESP32-S3, ESP32-C3 and ESP32-C6 chips, supporting both Xtensa and RISC-V architectures. It boots unmodified firmware images through the real mask ROM and bootloader into FreeRTOS, and runs in WebAssembly directly in a browser with no cloud service or account required. The project is released under the MIT license and includes support for peripherals like WiFi, displays, and GPIO depending on the chip.