Nimbalyst is a free, local, interactive visual editor & session manager where builders maximize speed, bandwidth, and context with Codex and Claude Code by collaborating visually on files, sessions, and tasks:

• Iterate with Codex and Claude Code on your sessions, markdown, mockups, diagrams, csv, Excalidraw, data models, MCP, and code. Approve the coding agent's changes in red/green WYSIWYG, edit, annotate, iterate visually. 
• Manage multiple sessions in parallel and in kanban. Search, resume, link sessions to files and files to sessions. For developers we include git management, AI commit, workstreams, worktrees, and terminal.
• Manage tasks. Keep track of your plans, bugs, todos, etc.. Have agent edit tasks and items, add them, move them, and execute them. Human see and edit this as well.
• Mobile app. Start, manage, and respond to your Codex and Claude Code sessions while on the go.

• Files Mode: Visual Editor with Codex and Claude Code
  • Edit markdown in a local, WYSIWIG, agentic editor powered by Codex and Claude Code. Review AI changes as red/green diffs.
  • Iterate with coding agents on html mockups. Annotate, edit, embed, & use to code.
  • Use coding agents to build excalidraw drawings and Mermaid diagrams. Visually edit yourself. Ask AI to edit them.
  • View CSV file, work with coding agents in the CSV file, track changes.
  • Build your data model with AI based on your code and docs. Use it to write better code.
  • Work in a Monaco code editor, see changes, approve them
• Agents Mode: Manage coding agents' work across parallel sessions in a UI
  • Link sessions to files and files to sessions
  • Open files in your sessions. Group files touched by a session
  • Run parallel sessions
  • Search and resume sessions
  • Manage in a Kanban board
• Task Mode: Keep track of your plans, bugs, todos etc..
  • Have agent edit tasks, add them, move them, and execute them
  • Human view and edit them too
• For developers
  • Manage git state
  • Use AI to git commit
  • Use embedded ghostty terminal
  • Leverage workstrees
• Mobile app
  • Session dashboard: see which agents need you and which are still working
  • Reply to questions via text or voice, agents resume immediately
  • Visual diff review: swipe through changes, tap to approve
  • Queue next tasks: keep the pipeline full, don't let agents sit idle
  • Push notifications: agents tell you when they need you
• Open storage of content and status in markdown, workflow in / commands, and plain files on disk or in git

Download the latest version for your platform:

1. Create a new (or open existing) document - Click "New" or press Cmd/Ctrl+N
2. Write in markdown - Write/edit in the WYSIWYG editor
3. Use AI assistant - Ask AI to research, edit the document, work across your files
4. Accept/Reject AI changes - Step through suggested AI edits, accept/reject
5. Work in Agent Manager - Switch to the agent manager view and run multiple agent sessions in parallel
6. Search/Resume sessions - Search and resume sessions, manage your work

Nimbalyst automatically checks for updates and notifies you when a new version is available. You can also manually check via Help → Check for Updates.

Found a bug or have a feature request? Please create an issue.

• Documentation - Watch videos and read documentation
• Discord - Join the discussion on Discord
• Website - Learn more about Nimbalyst on our website

Nimbalyst is proprietary software. All rights reserved. © 2026 Nimbalyst.

Built with:

• Electron
• Lexical by Meta
• React

Note: This is the public releases repository.