# Uxn virtual machine

9 Hacker News commenters recommended Uxn virtual machine and 1 criticized it, November 2025 to November 2026. It was recommended in 5 of 13 months.

**Verdict:** People recommend Uxn as a small, portable virtual machine with a spec simple enough for one person to implement, and it runs on very limited hardware. The most common caveat is the lack of an easy setup guide.

## Why people recommend it

- Simple spec, easy to implement (2 comments): "A system spec that is only 32 instructions deep, something that a single person could implement in less than a week." ([source](https://news.ycombinator.com/item?id=48045882)) "it is designed in a simple way that it will work" ([source](https://news.ycombinator.com/item?id=46930378))
- Runs on very limited hardware (2 comments): "it is extremely simple and can run on very limited hardware" ([source](https://news.ycombinator.com/item?id=48454253)) "We have tools like uxn[0] written on potato computers" ([source](https://news.ycombinator.com/item?id=46865762))
- Portable and lightweight (2 comments): "They showcase how many things a small virtual machine can do while being very portable" ([source](https://news.ycombinator.com/item?id=50007180)) "Very lightweight and stable, yet niche" ([source](https://news.ycombinator.com/item?id=46470429))

## What people warn about

- Lacks easy setup guide (1 comments): "Uxn lacks an easy setup guide and a browser for research" ([source](https://news.ycombinator.com/item?id=45864435))

## Alternatives hackers recommend

- [.NET](https://hackerapproved.com/p/net.md): 293 recommend
- [BEAM (Erlang VM)](https://hackerapproved.com/p/beam.md): 80 recommend
- [Java Virtual Machine](https://hackerapproved.com/p/java-virtual-machine.md): 42 recommend
- [JVM](https://hackerapproved.com/p/jvm.md): 39 recommend
- [GraalVM](https://hackerapproved.com/p/graalvm.md): 33 recommend

## Cite as

Hacker Approved, "Uxn virtual machine", https://hackerapproved.com/p/uxn/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).