Uji

Uji is a modular coding agent that allows users to swap any component at runtime and rewrite views in Lua.

Uji is a modular coding agent designed for developers who want complete control over their programming environment. Every part of the system is a module that can be swapped at runtime, including the core and the screen views, which are written in Lua. The software starts small and allows users to add plugins as needed. It is fast, lightweight, and distributed as free software under the GNU General Public License version 3. Installation options include Homebrew and Fedora COPR.

Uji at a glance

Best for: Software engineer
Pricing: Free and open source software
Released: October 2026
Category: AI coding tool
Website: github.com/uji-labs/uji

Key features

Swap modules at runtime
Rewrite views in Lua
Add plugins incrementally
Lightweight and fast architecture
Open source GNU GPLv3 license

Use it for

Build custom coding workflows with swappable modules
Modify user interface views using Lua

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