Spool is a free AI session library designed for macOS users. It consolidates all your Claude, Codex, and Gemini CLI sessions into a single, browsable interface. Users can easily pin important sessions and conduct full-text searches across their archives using the ⌘K shortcut. The application supports real-time indexing of session directories, allowing for quick access to recent and pinned projects. With its simple sidebar layout, Spool enhances productivity by keeping essential AI interactions organized and accessible.

The application is currently in early development, which means users may encounter some rough edges. Spool operates entirely on the user's machine, ensuring that data remains private and secure. The architecture includes an Electron app built with React, Vite, and Tailwind, alongside a powerful indexing engine based on SQLite. Installation is straightforward, and developers can build from source if needed. Overall, Spool provides a valuable tool for managing AI sessions efficiently.