The SuiteSparse Matrix Collection is a sparse matrix archive listing matrices with names, groups, sizes and entry types. The site states the collection is offline because of downloads far above normal, and that matrix files are not accessible.
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The Tab is a media brand covering youth culture and entertainment, published by Digitalbox Publishing Limited. It was founded by three students at Cambridge in 2009. The site carries news, entertainment, lifestyle and student reporting, and launched Reality Shrine and Film Shrine in 2025.
A multi-brand toy and doll database run by two people in the Netherlands since 2023, with browsable brand listings including Rainbow High and Zelfs. Users can create a personal checklist and wishlist across devices and share lists.
The Unarchiver is a macOS application for opening archive files. It extracts formats including Zip, Zipx, RAR, 7z, Tar, Gzip, Bzip2, LZMA, XZ, CAB, MSI, and several disc images, and supports encrypted and multi-volume archives. The site states the app is free and requires macOS 10.13 or later.
The University of Manchester is the UK’s largest single-site Russell Group university, recognised for research excellence and a diverse student community. It offers undergraduate, master's and international study programmes, runs student-led campus tours, administers Global Futures Scholarships for eligible international students joining in 2027, and coordinates interdisciplinary research platforms as part of its Manchester 2035 strategy.
The Vault at Pfaff's is a digital project about the antebellum artists and writers known as the United States' first self-described bohemians. It brings together their art and literature, including digital editions of The New York Saturday Press, Vanity Fair, and The New York Leader. The site is undergoing a migration to Drupal 9 and Islandora, and some primary source documents may be temporarily unavailable.
The Victorian Web is a site linking scholarship, teaching and learning since 1994. Its sections cover Victorianism, social, political and economic history, philosophy, science, technology, gender, authors, visual arts, music and theater, religion, texts, periodicals and places.
A platform-agnostic specification of the technical features a good website should have, built in the open under an MIT licence. It covers 177 topics across ten areas, including foundations, SEO, accessibility, security, performance and privacy, and offers a yes/no checklist for auditing a site. An open, read-only MCP server lets agents query the specification.
WALS Online is a database of structural phonological, grammatical and lexical properties of languages, gathered from descriptive materials by a team of 55 authors. The first version was published as a book with CD-ROM in 2005, and the first online version appeared in April 2008. The site states that WALS is a finished project and will no longer be updated.
World Bank Open Data is a data resource providing free and open access to global development data. Its site sections cover topics such as education, health, social protection, gender equality, economic policy, natural resources, clean energy, transport, cities and the digital divide.
An open-source resource for learning data structures and algorithms through implementations in various programming languages. The site covers programming languages including Python, Java, JavaScript, Go, Rust, and C++, and organizes algorithms into categories such as sorting, searching, and graph algorithms. It also provides guidance on contributing implementations.
The Theban Mapping Project is a website about the Valley of the Kings, presenting the royal necropolis of the New Kingdom. It also covers the Valley of the Queens and Western Wadis and the dig houses of the West Bank built for Egyptologists, institutes, universities, and projects working there. The site offers guidance for visitors navigating the Theban Necropolis and its tombs.
theindex.fyi is a maintained, manually curated meta-index of indie web and small web index sites. It organizes directories into categories such as curated directories, RSS and feed aggregators, search engines, random discovery, constraint-based clubs, and IndieWeb infrastructure. The project was born from a Hacker News comment thread and checks entries periodically for status.
Theme Plaza is a site that lists themes, with filters for colours, tags and features. It offers a scan-with-Anemone3DS option for details and lists themes with names, scores and contributors.
Themes is the official repository for custom visual themes for the Rockbox open-source media player firmware. The site hosts downloadable themes for a wide range of supported Rockbox-compatible devices, allows users to upload their own custom themes following published guidelines, and notes that some themes require the optional Rockbox font pack to function correctly. Themes can be installed via the Rockbox Utility tool or downloaded manually.
THEMIS (Time History of Events and Macroscale Interactions During Substorms) is a NASA mission whose site provides spacecraft, instrument and orbit information along with data retrieval, data product descriptions, event lists and documentation. It also offers collaboration tools including SSCWeb, a 3-D orbit viewer, CDAWeb and the THEMIS Wiki pages.
TheOldNet is a service that provides access to archived web content via a browser proxy. It allows users to view historical versions of websites from 1996 to 2012, includes a search engine for archived sites, a guestbook, random homepage listings, and various retro internet tools.
The Shadowlands is a website focused on unexplained mysteries, including ghosts and hauntings, cryptids such as Bigfoot and sea serpents, UFOs, and related topics. Operating since 1994, it provides informational content in text, video, audio, and image formats alongside eyewitness accounts, hosts memorial pages, and updates content monthly. The site has also publicly requested volunteer support from visitors.
TheSkyLive provides information about celestial objects and tools for exploring and observing the night sky. It includes star maps, a 3D Solar System viewer, visibility listings for planets, comets and asteroids, and guides to eclipses and the Moon. Users can set an observing location, and without one the site defaults to Greenwich.
The Traders' Den is a site run by music collectors for the free trading of lossless unofficial audio and video recordings. Registration is required to post in forums or download, and new users may wait two days before posting. It provides BitTorrent help and a Band Restriction Policy.
The Useless Website is a platform that directs visitors to random useless websites, and also provides a browsable list of specific useless sites for visitors to select and visit directly.
A word search puzzle site offering thousands of puzzles and games to play online or print out, spanning fun and educational topics. Puzzles are described as free to play on desktop, Mac, mobile and tablet, and users can create and share their own with a word search maker. Teachers reportedly make use of the puzzles.
They Shoot Pictures, Don't They? is a site dedicated to motion picture film-making, focusing on film directors. It offers director profiles with excerpts and filmographies, plus lists including The 1,000 Greatest Films and the 21st Century's Most Acclaimed Films.
They Shoot Zombies, Don't They? is a horror film list site. It presents the 1,000 Greatest Horror Films, compiled from over 4,300 horror lists, alongside the 500 most acclaimed horror films of the century and 150 lesser-seen horror films with fewer than 1,000 IMDb votes.