crystal

Why we included this project

If you juggle several AI coding sessions at once, Crystal was a desktop app that let you run multiple Codex and Claude Code instances side by side, each isolated in its own git worktree, so agents could experiment on branches without disturbing your mainline work. That worktree isolation is the idea that made it worth trying: you could compare what each approach produced before merging anything, instead of hopping between separate terminals. The project has since been deprecated and its successor is distributed as Nimbalyst, which gets the active updates. The original codebase is still a useful reference for anyone building a multi-editor environment where code, markdown, and spreadsheet views share one agent-driven workflow, so treat Crystal as the historical foundation and follow the Nimbalyst repo if you want the current version.