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Tesseract Open Source OCR Engine (main repository)
Caffe: a fast open framework for deep learning.
Godot Engine – Multi-platform 2D and 3D game engine
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
The open-source database for the realtime web.
LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.
Windows Calculator: A simple yet powerful calculator that ships with Windows
Emscripten: An LLVM-to-Web Compiler