Open CoDesign is an open-source desktop app that lets you turn prompts into artifacts (HTML, PDF, PPTX, ZIP, Markdown) locally, with multi-model support and one-click imports of Claude Code/Codex configs. It runs on macOS, Windows, and Linux, and emphasizes local-first, BYOK, and model diversity.
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What it is
Open CoDesign is an open-source Claude Design alternative — built for local-first design tooling with BYOK for multiple models and one-click imports of Claude Code or Codex provider configs. It exports real files (HTML, PDF, PPTX, ZIP, Markdown) and supports multiple models and providers.
How it works
The app uses a unified provider model (Anthropic, OpenAI, Gemini, DeepSeek, OpenRouter, SiliconFlow, local Ollama, or OpenAI-compatible relays) with a dynamic model picker. It provides a prompt-to-artifact workflow rendered in a sandboxed iframe, and includes features like live agent panel, AI image generation, AI-generated sliders, and a decompose-to-UI-kit capability that emits a ui_kits/<slug>/ folder for handoff. Credentials are stored locally under ~/.config/open-codesign/config.toml.
Getting started
1. Install
# macOS
brew install --cask opencoworkai/tap/open-codesign
# Windows — Scoop
scoop bucket add opencoworkai https://github.com/OpenCoworkAI/scoop-bucket
scoop install opencoworkai/open-codesign
Or download from the v0.2.0 release:
- macOS (Apple Silicon) -> open-codesign-*-arm64.dmg
- macOS (Intel) -> open-codesign-*-x64.dmg
- Windows (x64) -> open-codesign-*-x64-setup.exe
- Windows (ARM64) -> open-codesign-*-arm64-setup.exe
- Linux (x64, AppImage) -> open-codesign-*-x64.AppImage
- Linux (x64, Debian/Ubuntu) -> open-codesign-*-x64.deb
- Linux (x64, Fedora/RHEL) -> open-codesign-*-x64.rpm
### 2. Add a provider
On first launch, use Settings to select a provider path: ChatGPT subscription for Codex models, API keys for Anthropic/OpenAI/Gemini/OpenRouter/OpenAI-compatible endpoints, or local Ollama for a keyless option.
Credentials stay in `~/.config/open-codesign/config.toml`.
### 3. Type your first prompt
Choose from built-in demos (e.g., landing page, dashboard, pitch slide, pricing, etc.) to generate a sandboxed prototype.
## Recent releases
Latest release: v0.2.1 (2026-05-23) — Corporate networks, local workspace mode, and ChatGPT image generation; connects to internal LLM gateways behind a proxy or self-signed. prior: v0.2.0 (2026-05-09) with workspace-backed sessions and file panel upgrades. Earlier: v0.1.4 (2026-04-23) with AI image generation and API config hardening.
## Traction
Stars: 7651, Forks: 807, Open issues: 78.
## Behind the repo
Not provided in the facts block.
## Caveats
License: MIT. Created: 2026-04-18. Last push: 2026-08-04.