Show HN: Rhun, an open-source code editor written in assembly

Show HN: Rhun, an open-source code editor written in assembly rhun.app

A small, fast code editor for Windows, Linux and macOS. Written in assembly.

28 points•vladcodes•about 4 hours ago•11 comments•

#code #editor #assembly #code editor #rhun #written #x27 #source

I found that I'm not using even 1/3 of vim/vscode features anymore.

That's wht I'm building rhun - a small code editor for Linux, Windows and Apple silicon Macs. It obviously has Vim mode, a terminal, Git diffs and a panel for Claude Code or Codex sessions.

The editor and pixel renderer share an x86-64 assembly core. For Apple silicon, a build-time translator converts that core to AArch64, with separate platform adapters around it. The latest release can draft commit messages using a local Ollama model or an existing Claude Code or Codex subscription.

It's a solo project, MIT licensed and still early.

11 comments

jrapdx3about 1 hour ago

I'll have to try it.

It occurs to me that in this era of RAM hardware shortage, resource-frugal applications like this one could become more prevalent.

Anyway I guess we'll see if that happens.

vladcodesabout 4 hours ago

The plan is to add as less new features as possible and keep the same performance/launch time/memory and disk footprint as it is currently.

rgbrgbabout 2 hours ago

can you talk about why you do this in assembly?

browningstreetabout 2 hours ago

Assembly plus platform translation, hmmm. I don’t get it but that’s a heck of a thing to do! And yes, I’ll try it.

gespadasabout 2 hours ago

People... I just tried it... It is SOOO FAST !!!

slohrabout 2 hours ago

absolutely blazing! and it delivers exactly what I've wanted for quick code reviews of the AI output.

Read the full thread on Hacker News →

11 comments

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