"ImageTerrier is an open-source, scalable, high-performance search engine platform for content-based image retrieval applications. The ImageTerrier platform provides a comprehensive test-bed for experimenting with image retrieval techniques. The platform incorporates a state-of-the-art implementation of the single-pass indexing technique for constructing inverted indexes and is capable of producing highly compressed index data structures. ImageTerrier is written as an extension to the open-source Terrier test-bed platform for textual information retrieval research."

"Terrier is a highly flexible, efficient, and effective open source search engine, readily deployable on large-scale collections of documents. Terrier implements state-of-the-art indexing and retrieval functionalities, and provides an ideal platform for the rapid development and evaluation of large-scale retrieval applications."

"The Puzzle library is designed to quickly find visually similar images (GIF, PNG, JPG), even if they have been resized, recompressed, recolored or slightly modified. The library is free, lightweight yet very fast, configurable, easy to use and it has been designed with security in mind."

"Windsurf is a general framework for efficiently processing content-based image queries. With particular emphasis to the region-based paradigm, Windsurf provides an environment where different alternatives of the paradigm can be implemented. This allows such implementations to be compared on a fair basis, from the points of view of both effectiveness and efficiency."

"pHash is an open source software library released under the GPLv3 license that implements several perceptual hashing algorithms, and provides a C-like API to use those functions in your own programs. pHash itself is written in C++."

"A minimal init system for Linux containers"

"The Digital Service Standard is a set of 18 criteria to help government create and run good digital services. All public facing transactional services must meet the standard. It's used by departments and the Government Digital Service to check whether a service is good enough for public use."