Multi

Name: Multi
Author: Kofi Gumbs

A macOS tool for turning a group of websites into a lightweight, standalone desktop app.

Open source (GPL-3.0)By Kofi Gumbs

Free Open sourcemacOS Command line

Official websitegithub.com

Download pagegithub.com

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Alternatives

Unite ProUnite Pro turns websites into standalone Mac apps with native features and per-app customization through an interface, but it is paid and closed source.
WebCatalogWebCatalog gives web apps their own windows and dock icons across macOS, Windows and Linux with spaces for separation, on a freemium model.
Web App HubA Linux app that turns websites into standalone web apps with their own icons and browser profiles.
SpiderA GNOME app that installs websites as separate, sandboxed desktop web apps.
MenubarXMenubarX runs web apps from small menu bar windows on macOS with ad blocking and device simulation, with some features in the paid Pro version.
Coherence XCoherence X makes websites into Dock apps with separate accounts and extensions per app, but requires a Chrome-based browser and full use is paid.

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About Multi

Multi creates custom macOS apps from one or more websites, with native notifications, file uploads and dialogs. Each app keeps its settings in a single JSON file listing its tabs and URLs, and can be styled or extended with custom CSS and JavaScript. Apps can use tabbed or floating windows.

A command-line tool, create-mac-app, can create and update apps from scripts. Multi suits people who keep web apps such as Slack, Gmail or Google Calendar open all day and want them in their own window outside the browser.

Strengths

Native notifications, file uploads and dialogs for web apps
Configuration in one readable JSON file
Custom CSS and JavaScript per app
CLI for scripted app creation and updates

Limitations

macOS only
Setup involves editing JSON rather than a full settings interface

Details

Pricing: FreeFree and open source under the GPL 3.0; donations are welcome.
License: GPL-3.0
Developer: Kofi Gumbs
Platforms: macOS, Command line
How it runs: Downloadable app
Account: Not required
Best suited for: Mac users who want web apps like Slack or Gmail in their own lightweight windows
Categories: System utilities, Web browsers
Last verified: October 2, 2026
Added: October 2, 2026
Sources: github.com/kofigumbs/multi

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