fx-ui
Native Mac app for Vercel's fx coding agent. Draws every pixel on the GPU through GPUIX. OSS.
Related builds
Pie
Native macOS GUI for the Pi coding agent. SwiftUI, projects and sessions, diffs beside the chat. MIT.
HarnessRouter
One Docker box, one API. Codex, Claude Code, Hermes, Pi, and DeepSeek Harness on your machine. Apache 2.0 plus an open spec (UHP).
Codex as a platform
OpenAI's open Codex harness as an embeddable agent loop. Your app owns the UI, tools, and approvals. SDK, exec, or app-server.
workgraph
Claude Code-style workflows that run in any harness with any model. A skill, not another CLI.

