Nimbalyst

Nimbalyst is a free, MIT-licensed desktop application that wraps AI coding agents like Claude Code and Codex in a visual workspace with WYSIWYG editors, session management, and integrated task tracking. Built by repeat founders Karl Wirth and Greg Hinkle — whose previous company Evergage was acquired by Salesforce in 2020 — Nimbalyst targets developers, product managers, and builders who want higher bandwidth when working with agentic AI. The desktop app runs on macOS (Apple Silicon and Intel), Windows, and Linux, with a companion iOS app for managing sessions on the go.

What It Is

Nimbalyst is an agent-native visual workspace: a local desktop environment that replaces the terminal-and-text-editor loop with purpose-built visual editors, a session kanban board, and an integrated task tracker. Instead of reading terminal output and trusting blind edits, users see every change an AI agent makes as a red/green inline diff across markdown, code, mockups, diagrams, CSV files, and data models — and approve or reject each change in place. The core product is open source under the MIT License, with source code at github.com/Nimbalyst/nimbalyst.

Visual Editors and File Types

Nimbalyst ships seven or more built-in editors, all sharing the same EditorHost contract so third-party extensions are first-class citizens:

• Markdown — WYSIWYG editor with inline AI diff review, file history, and restore
• Code — Monaco editor with syntax highlighting and AI-assisted edits
• Mockups — wireframe and UI mockup editor that can generate frontend code
• Excalidraw — infinite-canvas drawing with natural-language AI generation
• Mermaid — flowchart and sequence diagram editor with live rendered preview
• CSV / Spreadsheet — spreadsheet view with AI-powered data transforms
• Data Model / ERD — visual schema design with Prisma-ready export
• Calc Sheet, Mind Map, and Browser (Chromium preview) round out the built-in set

An extension marketplace lets users install community-built editors (Astro website editor, visual git log, slides, 3D object editor) or build their own.

Agent Session Management

The session management layer is designed for parallel agentic workflows:

• Run multiple Claude Code, Codex, OpenCode (alpha), and GitHub Copilot (alpha) sessions simultaneously
• Organize sessions on a kanban board with phases: backlog, planning, implementing, complete
• Each session can be isolated in its own git worktree with one click
• A file edits sidebar shows every file an agent read or wrote; sessions link bidirectionally to files
• Sessions are persistent and searchable; any conversation can be resumed or branched
• Push notifications alert users when a session finishes or needs approval

Integrated Task and Context Graph

Tasks, plans, bugs, and ideas are stored as markdown frontmatter directly in the workspace, so agents can read the backlog, pick up context, and update the board as they complete work — without copy-pasting tickets into a prompt. Nimbalyst models every artifact (tracker items, plans, specs, diagrams, sessions, diffs, files, decisions) as a node in a shared context graph with typed edges, so both humans and agents traverse the same connected workspace rather than stitching together seven separate tools.

Open-Source Architecture and Deployment

The repository is a TypeScript/Electron monorepo using npm workspaces, with a native SwiftUI iOS app in a separate package. Key packages include packages/electron (desktop), packages/ios (iOS), packages/runtime (AI and sync services), packages/extension-sdk (extension development kit), and packages/collab-protocol (wire-format types for the collaboration sync protocol). The collaboration sync server at wss://sync.nimbalyst.com is a separate closed-source project. All content and metadata lives in plain markdown and standard files on the local filesystem; users bring their own API keys for Anthropic, OpenAI, or other providers, or run local models via LM Studio. Nimbalyst is SOC 2 Type 2 certified.

Update: v0.68.1

The latest release is v0.68.1, published on July 10, 2026. The repository was created in October 2025 and has seen rapid iteration, with the last push on July 15, 2026. The GitHub repository has accumulated 1,225 stars and 168 forks as of mid-July 2026. A Teams plan with real-time multiplayer collaboration on shared docs, mockups, diagrams, and kanban boards is in development with a waitlist open; pricing for Teams had not been announced at the time of this writing. The alpha release channel is available in Settings → Advanced → Release Channel for users who want early-access builds.