repo.qst.go.jp
Digital library for searching books, documents, images and online collections.
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quadratichq.com
Quadratic is an AI-powered spreadsheet that connects to various data sources and provides fast, explainable insights. Users can ask questions in plain English and the AI generates formulas, code, and charts. It supports connections to CSVs, Excel, PDFs, and databases like Postgres and Google Analytics. The platform is used by over 250,000 people at companies and universities.
qucosa.de
Browse digitized texts, images, archives and cataloged cultural materials.
queerdigital.com
Search an online collection of books, documents, media and archival records.
queerliberationlibrary.org
Queer Liberation Library is a digital library that connects LGBTQ+ people with literature, information, and resources. Members apply for a library membership, browse the collection in Libby, and check books out. A technology help desk supports account verification, login, and membership issues, and readers can suggest titles for the collection.
questdb.com
QuestDB is an open-source time-series database engineered for low latency. It uses a column-oriented, time-partitioned storage engine with memory-mapped files and vectorized execution for high-throughput ingestion and millisecond-level analytical queries. SQL is extended with time-series operators such as SAMPLE BY, LATEST ON, ASOF JOIN, WINDOW JOIN and HORIZON JOIN.
quickref.me
QuickRef.ME shares quick reference and cheat sheet material for developers, contributed by open source contributors. It covers topics including programming languages, Linux commands, Python, databases, keyboard shortcuts and other toolkits.
quodb.com
QuoDB is a user-submitted database of movie and television quotes, described as the largest collection of time-based contextualized lines from film and series content contributed by users worldwide. The project's source code is licensed under Apache License v2.0, its documentation under CC BY 3.0, and its glyphicons under CC BY 3.0. The site includes a privacy policy, cookie policy, privacy settings, a cookie usage notice, and an option for users to request that their data not be shared with third parties.
lweb.cfa.harvard.edu
The R. L. Kurucz atomic linelist is hosted among databases maintained at the CfA. The source describes it as data from Kurucz CD-ROM 18 and 23, with links to CD-ROM 23, the CfA AMP Server and CD-ROM 18. Other Kurucz data are maintained separately by R. L. Kurucz.
rachel.worldpossible.org
Use offline educational content through the RACHEL platform.
ees.kuleuven.be
Search atmospheric data collections and supporting datasets from NLD.
radioreference.com
Radio frequency database for public safety, aviation, trunked systems, and scanner information.
radioreference.com
RadioReference is a public reference source for radio and communications data. It provides a database of identified frequencies and trunked radio systems that can be browsed by state, metro area or ZIP code, alongside forums and a wiki. The site reports 226K+ identified frequencies and 7,400+ trunked radio systems. A premium subscription works across RadioReference and Broadcastify.
ranobedb.org
RanobeDB is an open, editable database of Japanese light novels and their official translations, intended for tracking and data purposes. The site states it does not host or provide reading material. It lists popular series, reviews, upcoming and recently released books.
rate.house
rate.house is a collaborative media database for rating and tracking albums, songs, movies, TV shows, literature, games and podcasts in one place. Users can create and browse lists and tags, and add recommendations. It is described as resembling IMDb or Goodreads with more media types, and as collaborative like Wikipedia.
rave-survey.org
Find and access astrophysics and astronomy research data, with indexed observational data.
rawg.io
RAWG is a video game discovery site with a database of games across many platforms, including PC, consoles and mobile. It lets users keep games in one profile and see what friends are playing. Pages list popular and new games, with display based on player counts and release date.
readthistwice.com
Read This Twice collects verified book recommendations from notable people and organizes them into reading lists. The site also offers Sona, an AI-driven book recommendation assistant that searches a book database based on the user's stated preferences.
rebase.neb.com
REBASE is a curated, open database of restriction enzymes and related proteins, including DNA methyltransferases. It provides data on enzymes, genomes, sequences and scientific literature, along with data files, tools, lists and compilations. The site states that information from REBASE should remain open and accessible to the public.
rebrickable.com
LEGO database for sets, parts, minifigures, build tracking, and custom model discovery.
recipe-search.typesense.org
Recipe Search is a search interface for browsing recipes from the RecipeNLG recipe database, using Typesense Instant Search. The page states it covers 2 million recipes and suggests example searches such as Pizza, Kale and Curry.
reciprocalnet.org
Reciprocal Net is a distributed crystallography network and distributed database used by research crystallographers to store information about molecular structures, with much of the data available to the general public. It is funded by the U.S. National Science Foundation as part of the National Science Digital Library project and is still under development, with 18 participating crystallography laboratories online.
recollectionwisconsin.org
Recollection Wisconsin is a digital collection that allows users to discover photos, maps, books, artifacts, oral histories and more from dozens of Wisconsin communities. The site is framed around sharing stories and exploring the past.
rebiun.org
Network of academic libraries in Spain.