Godot Engine – Multi-platform 2D and 3D game engine

The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)

Scalable, Portable and Distributed Gradient Boosting (GBDT, GBRT or GBM) Library, for Python, R, Java, Scala, C++ and more. Runs on single machine, Hadoop, Spark, Dask, Flink and DataFlow

A fast, distributed, high performance gradient boosting (GBT, GBDT, GBRT, GBM or MART) framework based on decision tree algorithms, used for ranking, classification and many other machine learning …

Code. Music. Live.

Record and Replay Framework

PlaidML is a framework for making deep learning work everywhere.

Descent 3 by Outrage Entertainment

Embedded Learning Library

A very fast hashtable

Dense and sparse linear algebra library for Ruby via SciRuby

Comp Mark I – Simple 4-bit virtual computer

Ruby language bindings for LIBSVM

A FUSE wrapper around MongoDB's GridFS