Welcome to MarkCluster

A local-first Markdown note editor. Every note is a plain .md file in a folder you choose.

• Folder tree, Markdown helpers and a built-in viewer
• Substring search across all your notes
• Color themes with matching fonts
• Organize and edit notes with Claude or OpenAI — by API key or with your subscription

The app follows your macOS language (57 languages). You can change it later in Settings.

MarkCluster will be installed in Applications.