Crystal
Run multiple Codex and Claude Code AI sessions in parallel. Now called Nimbalyst.
- Download Nimbalyst: https://nimbalyst.com/ - Documentation: https://docs.nimbalyst.com/ - GitHub repository: https://github.com/Nimbalyst/nimbalyst
- 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
- 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 ac
3 Reviews
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Running multiple Codex and Claude sessions in parallel is the workflow a lot of us backed into accidentally, and this gives it real structure. The session isolation kept experiments from stepping on each other, and comparing two approaches side by side is the feature I did not know I needed. Now that it is becoming Nimbalyst I hope the migration keeps the lightweight feel, because the appeal is that it manages parallelism without becoming a heavyweight IDE. My remaining wish is better persistence of session history across restarts. As a way to treat parallel agent runs as a first class activity rather than a pile of terminals, it is one of the more practical tools in this category.
Spinning up parallel sessions to try two solutions at once changed how I work in a week. Keeping them separate means I can abandon the bad branch without regret. The rename to Nimbalyst aside, the workflow already feels mature.
Two agents, two approaches, side by side, pick the winner. That is the whole value and it nails it. Isolated sessions kept the experiments from stepping on each other, so abandoning the worse branch costs nothing. Becoming Nimbalyst now, but the workflow already feels settled.