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Zimacs

A desktop text editor in Zig that also runs in the browser.

Live demoSource
  • Zig
  • raylib
  • Tree-sitter
  • WebAssembly
  • The Zimacs site with the install command and the editor running in the browser below it
  • Zimacs searching SQLite's 9.5 MB source file, next to the logo and tagline
The Zimacs site with the install command and the editor running in the browser below it

Zimacs is a desktop text editor I wrote from scratch in Zig. It handles large files, highlights 20 languages, and runs on Linux and Windows. There's a browser version too, so you can try it without installing anything.

It started in 2024 as a weekend experiment that could load a font and read a file. In 2026 I turned it into a real editor: tabs, find and replace, a command palette, themes, and sessions that bring your unsaved work back after a restart. It doubles as a notes app, with links between Markdown files and a graph of how your notes connect.

Releases install with one command and update themselves. macOS isn't supported yet. Try it at zimacs.iwhitebird.com.