An Open Source Machine Learning Framework for Everyone

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

Bitcoin Core integration/staging tree

Open Source Computer Vision Library

Tesseract Open Source OCR Engine (main repository)

Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

Protocol Buffers - Google's data interchange format

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

Caffe: a fast open framework for deep learning.

A library that provides an embeddable, persistent key-value store for fast storage.

Telegram Desktop messaging app

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

KeePassXC is a cross-platform community-driven port of the Windows application “KeePass Password Safe”.

Lightweight, Portable, Flexible Distributed/Mobile Deep Learning with Dynamic, Mutation-aware Dataflow Dep Scheduler; for Python, R, Julia, Scala, Go, Javascript and more

Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.

Apache Arrow is the universal columnar format and multi-language toolbox for fast data interchange and in-memory analytics

Open-source simulator for autonomous driving research.

Cap'n Proto serialization/RPC system - core tools and C++ library

software version control visualization

ZeroMQ core engine in C++, implements ZMTP/3.1

FUSE-based file system backed by Amazon S3

A fast, scalable, high performance Gradient Boosting on Decision Trees library, used for ranking, classification, regression and other machine learning tasks for Python, R, Java, C++. Supports comp…

Vowpal Wabbit is a machine learning system which pushes the frontier of machine learning with techniques such as online, hashing, allreduce, reductions, learning2search, active, and interactive lea…

Double-entry accounting system with a command-line reporting interface

Go engine with no human-provided knowledge, modeled after the AlphaGo Zero paper.

An open-source implementation of the AlphaGoZero algorithm

ELF: a platform for game research with AlphaGoZero/AlphaZero reimplementation

Restoration of defocused and blurred photos/images

Fast Library for Approximate Nearest Neighbors

Stanford Network Analysis Platform (SNAP) is a general purpose network analysis and graph mining library.