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Mainframe

v0.1.1 · by José Duarte · added 3 November 2026

Bringing back the mainframe vibes to your editor

Themes

How to install

With Forge Super installed, the button above opens the app on this extension, where you press Install. Nothing is installed until you do.

You can also open the Extensions panel in the app and search for Mainframe. The extension's id is mainframe-theme.

Don't have Forge Super yet? Download it here.

README

From the extension's repository, written by its authors and not by Mentenaz. See the source.

Mainframe

A light theme for Zed that brings back the mainframe vibes to your editor.

Mainframe uses a warm, paper-like background with a restrained color palette:

  • Brown (#884400) for keywords and control flow
  • Green (#226600) for strings, numbers, and constants
  • Blue (#0054a6) for types, traits, and interfaces
  • Purple (#660099) for macros, attributes, and preprocessor directives
  • Black (#000000) for variables, functions, and operators

Installation

Search for "Mainframe" in the Zed extension marketplace, or install it from the command palette with zed: install extension.

License

MIT