Tiny VM sandbox in C with apps in Rust, C and Zig
Minimalist, dependency-free virtual machine sandbox for microcontrollers and other resource-constrained devices. Single C file, no dynamic memory allocations, asynchronous design, pure C99 - ringtailsoftware/uvm32
Tiny VM sandbox in C with apps in Rust, C and Zig launched on December 12, 2025 with 196 votes, #137 of 11,628 launches that month and more than 95% of that year's launches.
In plain words
Tiny VM sandbox in C with apps in Rust, C and Zig is a development tool that provides a lightweight virtual machine environment written in C. It allows developers to run applications built in multiple programming languages including Rust, C, and Zig within a sandboxed environment. The tool is designed for developers who need isolated execution spaces for testing and running polyglot applications.
written from the facts on this page · September 2026
From the sources
uvm32 is a minimalist, dependency-free virtual machine sandbox designed for microcontrollers and other resource-constrained devices. Single C file, no dynamic memory allocations, asynchronous design, pure C99. On an STM32L0 (ARM Cortex-M0+) the required footprint is under 3KB flash/1KB RAM. uvm32 is a RISC-V emulator, wrapped in a management interface and provided with tools to build efficient code to run in it. Although based on a fully fledged CPU emulator , uvm32 is intended for executing custom script like logic, not for simulating hardware. Many scripting languages and virtual machines are available for embedding in small systems and they all make tradeoffs in different dimensions.…from github.com
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