Nimbalyst

Nimbalyst: Open-source visual workspace for building with Codex, Claude Code, OpenCode, and other coding agents. Work on everything in one place: sessions, worktrees, tasks, docs, diagrams, mockups, commits, and code. Visually editable. Deeply linked. Free and MIT licensed. Desktop app for macOS, Windows, and Linux, with an iOS companion app.

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https://github.com/user-attachments/assets/bfd89552-61f4-4db1-8301-cc2495423b89

What you get

• Visual editing of the agent's work. WYSIWYG editors for markdown, mockups, Mermaid, Excalidraw, CSV, data models, and code in Monaco. You and the coding agent edit the same files.
• Red/green diff review. Step through the agent's proposed edits in the rendered document and accept or reject each one.
• Parallel agent sessions. Run several coding agents at once, each isolated in its own git worktree.
• Session kanban. Track every session on a board. Search, resume, and link sessions to the files they touched.
• Task tracking. Plans, bugs, features, and todos in trackers your agents read and update alongside you.
• Heterogeneous agents. Codex and Claude Code side by side, plus OpenCode and GitHub Copilot in alpha and a Gemini provider.
• Git built in. Branch and worktree management, staging, AI-drafted commits, and an embedded terminal.
• MCP client and servers. Connect any MCP server, with tool results rendered as visual widgets rather than raw JSON.
• Extension SDK. Every editor, including the built-in ones, goes through the same EditorHost contract, so an editor you build is first-class. Ask your agent to build one for a file type we do not ship.