Directory
Published directory entries matching your search.
Sci-Hub is a platform that provides access to academic research literature, with a database of over 88 million documents covering most papers published up to 2022 in major academic outlets. It also offers Sci-Bot, a question-answering tool that uses its database to generate cited, scientifically grounded responses to research questions.
The Stanford Encyclopedia of Philosophy organizes scholars from around the world in philosophy and related disciplines to create and maintain an up-to-date reference work. It offers a table of contents, archives and random entry browsing, with editorial information and citation guidance.
The Atlas of Economic Complexity is a research and data visualization tool from Harvard's Growth Lab. It visualizes global trade data and economic growth opportunities for every country, offering country profiles, annual growth projections, complexity rankings and custom visualizations of over 50 years of trade flows. It is part of the Growth Lab Viz Hub.
The Internet Classics Archive provides 441 works of classical literature by 59 different authors, mainly Greco-Roman works with some Chinese and Persian, all in English translation. It has operated since 1994 and is run by Daniel C. Stevenson, Web Atomics. A copy was taken over by MIT IS&T after the classics.mit.edu site stopped responding. The site states that all works are, to its knowledge, in the public domain.
A web page that maps the solar system to scale with the Moon at one pixel. It presents the Sun, planets and some moons in sequence across a long scroll, with notes on the large distances between them. It states that distances shown are averages and depend on orbital positions.
1DDL is a site offering direct download links for HD movies and TV shows in 720p, 1080p and 2160p (4K) resolutions. It lists releases across categories including movies, TV shows, games, eBooks, music and applications, with each entry linking to a download post.
365Chess is an online chess games database and opening explorer. Users can search games by player, ECO code or result, search positions, and browse openings move by move. The site also offers puzzles, an openings trainer, playing against the Stockfish computer engine, endgame training, and an analysis board. It states the database contains more than 4,400,000 games updated every week.
A global nonprofit making the Tibetan Buddhist canon freely available in modern languages through English translations and interactive tools. It offers a Reading Room for browsing texts by section or topic and a Scholar's Room with multilingual resources, translation comparison and textual variants for research.
911Tabs is a tablature search engine that indexes tabs from other websites. It covers guitar, bass, drum, piano, guitar pro, power tabs and sheet music, with an index of over 4,600,000 tabs. The site was founded in 2004 and is operated by Ultimate Guitar USA, LLC.
AA9PW is an amateur radio practice site built and maintained by Simon Twigger. It offers tools to practice for US amateur radio license exams and to learn and practice Morse Code online or through the Ham Morse iPhone app. The site dates back to 1996 and added POTA CW exchanges to its Morse Code Generator.
Academic Torrents is a BitTorrent-based distributed system for sharing large research datasets, operated as a product of the Institute for Reproducible Research, a U.S. 501(c)3 nonprofit. It is intended to let researchers replicate and distribute data without the high costs of commercial hosting providers. The site states it makes over 419.44TB of research data available.
Academo is a free online education platform that provides interactive, browser-based educational demos and tools. It covers subjects including Engineering, Geography, Mathematics, Music, and Physics, and requires no user registration or sign-in to access content.
Aerospaceweb.org is a non-profit site operated by engineers and scientists in the aerospace field. It provides educational information on subjects ranging from aviation to space travel to aerospace technology. Its sections include a virtual aircraft museum, design articles, visitor questions, and calculators for aerodynamic and atmospheric properties.
Contemporary Aesthetics is an international, interdisciplinary, peer- and blind-reviewed open-access online journal covering contemporary theory, research and application in aesthetics. It began publication in mid-2003 as annual volumes. Articles are double blind-peer-reviewed and added to the volume immediately after acceptance, with the volume growing during the year.
AfraTafreeh is an online platform that provides free content for medical students. The site states it does not support any form of piracy, offers an option to donate content, and notes its efforts are new with limited resources.
Agora offers on-demand 3D animation courses recorded by industry professionals. It also provides exclusive character rigs, mentorship guilds with weekly live meetups, and gamified season paths. Weekly critique is available for premium members only.
Ai2 Asta is a scholarly research assistant developed by Ai2 that combines literature understanding and data-driven discovery. It uses 108M+ abstracts and 12M+ full-text papers to find, summarize, and analyze scientific evidence.
Airfoil Tools provides tools to search, compare and plot airfoils. It includes an airfoil search with filtering by thickness and camber, a plotter, shape comparison, NACA 4 and 5 digit generators, and a Reynolds number calculator. Users can add their own airfoils, but these are stored only in the browser session.
Airpano is a virtual travel project created by a team of Russian photographers. It focuses on producing high-resolution aerial 360° photographs and 360° video. It is described as the largest virtual travel resource in the world by geographical coverage, number of aerial photographs, and artistic and technical image quality. It offers 360° panoramas, 360° videos, gigapanoramas, timelapses, virtual tours, stock photos, stock 360° videos, applications, exhibition installations, and touch screen content.
Al Manhal is a Dubai-based provider of Arabic scholarly content databases and an online Arabic bookstore. It offers full-text searchable databases of eBooks, eJournals, eTheses, children's Arabic levelled readers, Middle East strategic studies content, and Islamic finance resources for academic, government, corporate and library institutions. It also provides library services including MARC21 record creation, metadata extraction, Arabic transliteration and digitization. Its Al Manhal eStore sells over 90,000 Arabic book titles in digital and print formats, with 24/7 customer support and flexible payment options.
An interactive sky atlas for visualizing digitized astronomical images or full surveys, superimposing entries from astronomical catalogues or databases, and accessing related data from Simbad, VizieR and other archives. It is available as Aladin Desktop, a Java application, and Aladin Lite, a browser-based version.
Alchemy Forums is an online discussion community focused on alchemy and related topics. It includes sub-forums for general alchemy discussions, practical lab alchemy, spiritual alchemy, shamanism, alchemical texts and symbolism, homesteading, and community networking. The platform hosts thousands of discussion threads and messages across its sections.
A reference site collecting rules of basic algebra with explanations and examples for each equation. It covers rules for arithmetic, exponents and radicals, stating that these simple rules can be used to solve most basic algebra problems.
Algebrica is a free, open, and distributed mathematical knowledge base with content openly distributed on GitHub under the CC BY-NC 4.0 license. It offers publications in print and digital formats and accepts community contributions through a supervised review process.
