Codex++

Codex++ is an open-source desktop tool that enhances and manages the OpenAI Codex / ChatGPT application without modifying its core files. It provides provider switching, session management, plugin support, custom themes, and interface enhancements through a dedicated control center. Users can toggle features independently, manage multiple API providers and models, organize sessions and projects, install community themes, and run scripts and plugins—all while keeping the original application intact.

The tool is designed for developers who want to customize their Codex workflow. It operates as an external launcher using Chromium DevTools Protocol and local services, offering batch operations for sessions, model testing, diagnostic tools, and environment management. Available for Windows and macOS.