Where you go for

ml.js

Comprehensive browser-based machine learning library in JavaScript.

mlpack

Fast, header-only C++ machine learning library.

Patern Recognition and Machine Learning Toolbox

Open-source toolbox for pattern recognition and machine learning algorithms.

Apache SAMOA

Scalable, distributed machine learning for big data streams.

Gymnasium

The standard toolkit for reinforcement learning environments in Python.

Lua - Numerical Algorithms

Numerical computing in Lua: open-source algorithms for scientific tasks.