VyOS is a Linux distribution for routers and firewalls which features a unified commandline interface and a single configuration file, with an API for extending it. It includes BGP, OSPF, and RIP routing protocols, policy-based routing, a DHCP and caching DNS server, a Web proxy, and more. It runs on x86 physical machines and a variety of hypervisors, including KVM, Xen, VMWare, and Hyper-V. VyOS is forked from Vyatta and based on VC6.6 source code.
Hierarchical Cluster Engine is a a solution that can be used to construct custom network meshes or distributed network cluster structures with several types of relations between nodes. It supports handling of management requests from multiple source points, native reduction of results from multiple nodes (aggregation, duplicate elimination, sorting, etc.), a powerful full-text search engine and data storage, transaction-less and transactional request processing, and many language bindings for client-side integration.
garith is a game similar in spirit to BSD's "arithmetic" or TuxMath. The game asks you to perform a simple arithmetic operation within a certain time frame. It improves your skills by stressing the operations you get more frequently wrong or that longer to answer. The statistics are saved/restored across games, so that each game is tuned for your current arithmetic abilities.
OpenALPR is an automated license plate recognition library that analyzes images and identifies license plates. The output is the text representation of any license plate characters found in the image. It uses OpenCV computer vision libraries to recognize and analyze the plate images, and the Tesseract OCR library and a specially trained character set to recognize characters.