MIDI Monster

Relies on INI-like configuration files with manual mapping syntax and no built-in GUI, requiring users to learn and edit text files, which can be error-prone for beginners.

Building from source requires installing multiple development libraries (e.g., libasound2-dev, liblua5.3-dev), and cross-compiling for Windows needs a Linux environment, adding setup overhead.

Documentation is split across individual backend files, and some backends have noted limitations or OS-specific restrictions, such as Python scripting not being fully supported on Windows.

Lacks integrated tools for real-time event visualization or debugging, forcing users to rely on external tools or manual testing to verify configurations.