https://github.com/nok/sklearn-porter Supports many scikit-learn models to Java/C/JavaScript/Go/Ruby, at least since 2016.
https://github.com/konstantint/SKompiler transpiles to Excel/SQL
https://github.com/jonnor/emlearn To C only, focus on microcontrollers/embedded devices. Includes feature extraction tools also. Disclaimer: I wrote it.
https://github.com/nok/sklearn-porter Supports many scikit-learn models to Java/C/JavaScript/Go/Ruby, at least since 2016.
https://github.com/konstantint/SKompiler transpiles to Excel/SQL
https://github.com/jonnor/emlearn To C only, focus on microcontrollers/embedded devices. Includes feature extraction tools also. Disclaimer: I wrote it.