Gauntlet

Gauntlet is a web‑first, cross‑platform application launcher that runs on Linux (X11), macOS (M1 and Intel), and, on a best‑effort basis, Linux Wayland and Windows. It presents installed applications, a calculator, and other built‑in functions in a searchable interface that can be opened via a global shortcut or a CLI command. Results are ordered by frecency, combining how often and how recently an item has been used, and can be filtered by substring matching.

The launcher is built on a custom React reconciler without Electron and uses the Deno runtime to sandbox plugin code. Plugins are written in TypeScript, distributed as Git repositories, and can define UI views, one‑shot commands, inline content, clipboard interactions, and custom shortcuts. Permissions are explicitly declared, and the plugin API supports extensive integration with the UI.

Developers can create and install plugins through the Settings UI or by providing a repository URL, and the project includes documentation for plugin development, theming, and building from source. The software is stable but no longer under active development.