Dap-mux – Connect your editor and REPL to the same debug session

Dap-mux is a lightweight tool that lets developers connect multiple editors and REPLs to a single Debug Adapter Protocol (DAP) session, enabling simultaneous debugging from different interfaces. It’s for experienced programmers who work across diverse environments and want to inspect the same runtime state without restarting or reconfiguring. Its appeal lies in solving a persistent workflow friction—bridging editors and interactive shells—with a simple, pragmatic hack born from decades of real-world coding.