ShannonMax is a new open-source tool that applies information theory to optimize Emacs keybindings, analyzing your usage patterns to suggest more efficient shortcuts. Developed by Sstraust, this Clojure-based project helps users identify commands where changing keybindings can significantly reduce typing effort. The tool uses a keylogger to collect data on your Emacs usage and then applies Shannon entropy calculations to determine optimal keybinding lengths.

Users can download the shannon-max.el file and a standalone JAR to their Emacs configuration directory. After enabling the logger with `(shannon-max-start-logger)`, the system tracks command usage over time. The analysis results show which keybindings are too long for frequently used commands and which are too short for rarely used ones, allowing users to rebalance their keymap for maximum efficiency. The tool assumes each keypress costs 1 point, with control characters adding an additional cost.

The project, which has 58 stars on GitHub, includes customization options for different typing preferences and alphabet sizes. While currently limited by some package conflicts and the need for manual installation, ShannonMax represents an innovative application of information theory to everyday programming tools. The developer has outlined future improvements including better MELPA integration and support for multi-command codings.