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@stravu/crystal
Other#Claude Code#Codex#Cursor#Coding#Product

Deprecated desktop app for AI coding worktrees

Crystal was a desktop workspace for running multiple Claude Code and Codex sessions in parallel git worktrees. It focused on comparing approaches, tracking sessions, and keeping AI-assisted changes isolated while you work across editors and file types. The README says the project has been replaced by Nimbalyst.

3,115 stars•194 forks•TypeScript•Updated 6mo ago
Who it's for

Builders who want to run multiple AI coding sessions in parallel and compare the results safely.

What it delivers

You can keep AI-assisted work in separate worktrees instead of mixing experiments into one branch.

What it does

Parallel AI sessions

Runs multiple Claude Code and Codex sessions at the same time.

Git worktree isolation

Keeps each session in its own worktree so changes stay separated.

Desktop workspace

Provides a desktop app for managing sessions, editors, and project state.

Multi-editor support

Supports code, markdown, spreadsheets, diagrams, and visual docs in one workspace.

Session tracking

Tracks AI sessions at the project level so you can review activity later.

README

Crystal Is Now Nimbalyst

Crystal (formerly a multi-session AI code assistant manager) has been deprecated and replaced by Nimbalyst.

Deprecated: February 2026.

Migration

Nimbalyst Features

  • AI-native workspace for human + AI collaboration
  • AI agents that stream edits directly into open editors in real time
  • Multi-editor environment for code, markdown, spreadsheets, diagrams, and visual docs
  • Extension-first architecture for custom editor/file-type support
  • Local-first file model using open formats like Markdown, JSON, and CSV
  • Code-aware agent orchestration for implementation planning and task execution
  • Git worktree isolation for safer parallel AI coding sessions
  • Rich markdown editing with tables, code blocks, embeds, and formatting tools
  • Monaco-based code editing experience for programming workflows
  • RevoGrid-powered spreadsheet editing for CSV and tabular workflows
  • Excalidraw integration for diagram and whiteboard workflows
  • Visual data modeling tools for schema-centric work
  • Visual mockup editing for interface ideation and iteration
  • Unified editor lifecycle with consistent AI integration across editor types
  • Auto-save and file watching for reliable local development workflows
  • Project-level workspace management and AI session tracking
  • Built on production-grade desktop foundations with Electron

FAQ

  • Is Crystal discontinued? Yes. Crystal is deprecated and replaced by Nimbalyst.
  • Can I still use Crystal? Yes. You can continue using Crystal, but we recommend moving to Nimbalyst for active updates.
  • Where is Nimbalyst? https://nimbalyst.com/

For downloads, documentation, and updates, go to https://nimbalyst.com/.

Files in the repo

Repository payload•31 top-level entries
  • .github
  • build
  • docs
  • frontend
  • main
  • screenshots
  • scripts
  • shared
  • tests
  • .eslintignore
  • .gitignore
  • .node-version
  • .npmrc
  • .nvmrc
  • AGENTS.md
  • CHANGELOG.md
  • check-license-compatibility.sh
  • CLAUDE.md
  • com.stravu.crystal.metainfo.xml
  • com.stravu.crystal.yml
  • CONTRIBUTING.md
  • LICENSE
  • NOTICES
  • package.json
  • playwright.ci.config.ts
  • playwright.ci.minimal.config.ts
  • playwright.config.ts
  • pnpm-lock.yaml
  • pnpm-workspace.yaml
  • README.md
  • setup-dev.sh

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