Yes. crystal is free and open-source software, distributed under the MIT license.

Which platforms does crystal support?

crystal provides downloads for macOS, Linux.

What is the latest version of crystal?

The latest version is v0.3.5, released on Feb 26, 2026.

Is Crystal still available?

Crystal is deprecated as of February 2026 and has been replaced by Nimbalyst.

Where can I get Nimbalyst?

Nimbalyst is available for download at https://nimbalyst.com/

Can I still use Crystal?

While Crystal remains functional, the developers recommend migrating to Nimbalyst for active updates and support.

crystal

by stravu 3.1k stars MITDeveloper Tools

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About crystal

Crystal, now rebranded as Nimbalyst, was a desktop application designed for managing multiple AI-assisted coding sessions. It enabled developers to run parallel Codex and Claude Code AI sessions within isolated git worktrees. The tool facilitated testing and comparing different AI-generated approaches within a unified development environment.

Nimbalyst expands on this foundation as an AI-native workspace supporting collaborative workflows between humans and AI agents. It provides real-time code editing, multi-format document support, and project management capabilities. The platform emphasizes local-first file handling using open formats while integrating various specialized editors for different workflow types.

Key features

AI agents stream edits directly into open editors in real time
Multi-editor environment supports code, markdown, spreadsheets, and diagrams
Extension-first architecture allows custom editor/file-type support
Local-first file model using Markdown, JSON, and CSV formats
Git worktree isolation for parallel AI coding sessions
Rich markdown editing with tables and code blocks
Monaco-based code editing for programming workflows
Excalidraw integration for diagram workflows

Download v0.3.5

Feb 26, 2026

macOS
macOS

universal · Crystal-0.3.5-macOS-universal.dmg241.1 MB universal · Crystal-0.3.5-macOS-universal.zip231.5 MB

Linux
Linux

x64 · Crystal-0.3.5-linux-amd64.deb119.4 MB x64 · Crystal-0.3.5-linux-x86_64.AppImage154.4 MB

View all 10 versions

Frequently asked questions

Is crystal free?: Yes. crystal is free and open-source software, distributed under the MIT license.
Which platforms does crystal support?: crystal provides downloads for macOS, Linux.
What is the latest version of crystal?: The latest version is v0.3.5, released on Feb 26, 2026.
Is Crystal still available?: Crystal is deprecated as of February 2026 and has been replaced by Nimbalyst.
Where can I get Nimbalyst?: Nimbalyst is available for download at https://nimbalyst.com/
Can I still use Crystal?: While Crystal remains functional, the developers recommend migrating to Nimbalyst for active updates and support.

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