(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.
Crystal was a desktop application for running multiple Codex and Claude Code sessions in parallel Git worktrees and comparing their coding work, but it was deprecated in February 2026 and replaced by Nimbalyst. It was intended for developers managing parallel AI-assisted development sessions. The catalogue contains instructions related to the former Crystal workflow.
Latest release v0.3.5 — 0.3.5 · 26 Feb 2026
These files are stravu/crystal's own configuration. They tell Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.
AGENTS.md A 702 tok CLAUDE.md A 6,391 tok