Multi-Claude is a native macOS utility that lets you run multiple Claude Desktop accounts concurrently by creating a separate Mac app instance for each account. Each instance has its own dock icon, isolated login session, and independent chat history so users can operate separate profiles side-by-side without signing in and out. The tool streamlines workflows for people who need parallel conversations, account comparisons, or multi-profile testing on a single machine while preserving session isolation and native macOS integration.