An Open Source Machine Learning Framework for Everyone

Bitcoin Core integration/staging tree

Open Source Computer Vision Library

Protocol Buffers - Google's data interchange format

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

LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.

The Serenity Operating System 🐞

Animated sprite editor & pixel art tool (Windows, macOS, Linux)

qBittorrent BitTorrent client

Powerful yet simple to use screenshot software 🖥️ 📸

Solidity, the Smart Contract Programming Language

Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks

FoundationDB - the open source, distributed, transactional key-value store

Apache Arrow is a multi-language toolbox for accelerated data interchange and in-memory processing

A Multithreaded Fork of Redis

Cross-platform library for building Telegram clients

An audio server, programming language, and IDE for sound synthesis and algorithmic composition.

Lightweight and modular C++11 graphics middleware for games and data visualization

Oboe is a C++ library that makes it easy to build high-performance audio apps on Android.

A collection of algorithms, data structures and other useful information for competitive programming.

Problems solved on open.kattis.com