Chalk

Chalk is a native macOS drawing application built for rapid visualization. It gives you arrows, boxes, text, and freehand tools so you can sketch a flowchart, annotate a screenshot, or rough out an architecture diagram in seconds. The design philosophy is minimal friction: no accounts, no projects, no configuration. You open the app and start drawing.

The workflow centers on the clipboard. Once you finish a sketch, you export it as a PNG straight to the clipboard and paste it into Slack, Jira, Notion, or whatever documentation tool you're using. That tight loop makes it useful for the kind of quick visual communication that happens constantly in development teams but rarely justifies opening a full design tool.

Where Chalk gets interesting is the AI integration. It supports the Model Context Protocol, which means you can connect it to Claude, Cursor, Windsurf, or VS Code. Your AI assistant can then read the current canvas, generate diagrams, or annotate screenshots based on what you're working on. If you're debugging an issue and want an architecture diagram as context, you can have the assistant draw it directly rather than describing it in prose.

Under the hood, the app is local first. Everything saves automatically to your machine with no cloud dependency. That matters if you're sketching internal architecture or annotating confidential screenshots. There's nothing to configure because there's nothing external to connect to unless you choose to wire up an MCP integration.

It's aimed at developers, architects, and knowledge workers who need to communicate visually but don't want to context switch into a heavy design tool every time. If you've ever opened a blank Figma file just to draw three boxes and two arrows, this is the gap Chalk fills. It's also useful for people who already use Claude or Cursor and want their assistant to have access to diagrams as working context.

The free tier includes unlimited sketches in one folder, all drawing tools, local storage, and clipboard export. A Pro tier is coming but pricing hasn't been finalized yet. The current version is 0.1.1, so this is an early product, but the core loop of quick sketching and clipboard export works today. You can reach the team at contact@appkit.studio.