crystal
(Crystal is now Nimbalyst) Run multiple Codex and Claude Code AI sessions in parallel git worktrees. Test, compare approaches & manage AI-assisted development workflows in one desktop app.
- 3.1k stars
- 197 forks
- 68 open issues
- Language: TypeScript
- License: MIT
- updated
Install
git clone https://github.com/stravu/crystal- Clone the repository.
- Follow the README for installation and usage instructions.
Editor's note
Crystal was a desktop application built in TypeScript that allowed developers to run multiple Claude Code and OpenAI Codex sessions simultaneously, each isolated in its own git worktree, so different AI-assisted approaches to the same problem could be tested and compared side by side without interfering with one another. It integrated directly with Claude Code as its primary AI coding interface and supported Codex as an alternative, targeting developers who wanted to manage parallel agentic coding workflows from a single Electron-based desktop app. The project has been deprecated as of February 2026 and replaced by Nimbalyst, a successor product that retains git worktree isolation but expands into a broader AI-native workspace supporting multiple editor types including Monaco for code, RevoGrid for spreadsheets, and Excalidraw for diagrams, with AI agents that stream edits directly into open editors in real time. Developers currently using Crystal are directed to migrate to the Nimbalyst repository at github.com/Nimbalyst/nimbalyst.
Tools overview
What people ask about crystal
What is stravu/crystal?
stravu/crystal is tools for the Claude AI ecosystem. (Crystal is now Nimbalyst) Run multiple Codex and Claude Code AI sessions in parallel git worktrees. Test, compare approaches & manage AI-assisted development workflows in one desktop app. It has 3.1k GitHub stars and its last recorded update is dated 2026-02-26.
How do I install crystal?
You can install crystal by cloning the repository (https://github.com/stravu/crystal) or following the README instructions on GitHub. ClaudeWave also provides quick install blocks on this page.
Is stravu/crystal safe to use?
Our security agent has analyzed stravu/crystal and assigned a Trust Score of 82/100 (tier: Trusted). See the full breakdown of passed checks and flags on this page.
Who maintains stravu/crystal?
stravu/crystal is maintained by stravu. The last recorded GitHub activity is dated 2026-02-26, with 68 open issues.
Are there alternatives to crystal?
Yes. On ClaudeWave you can browse similar tools at /categories/tools, sorted by popularity or recent activity.