NIST Standard Reference Database 108 is a handbook of basic atomic spectroscopic data, compiling data for neutral and singly-ionized atoms of elements hydrogen through einsteinium. Wavelengths, intensities and spectrum assignments are given in tables per element, with about 12,000 lines collected in a wavelength-sorted finding list.
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icarus.ucdavis.edu
ICARUS (Integrated Chamber Atmospheric data Repository for Unified Science) is a data repository for atmospheric chamber experiment data, developed at the University of California, Davis with European partner Eurochamp Database. It allows users to search, browse, and download datasets from affiliated atmospheric chemistry experiments, and provides associated documentation and reference materials for the repository.
komci.org
Korean Medical Citation Index is a project of the Korean Academy of Medical Sciences that publishes annual citation reports analyzing citations among articles in Korean medical journals. KoMCI Web provides access to bibliographic and cited reference data from over 110 Korean medical research journals, with citation analysis data and links to journal sites for full text viewing.
kudos.wiki
Movie and television guide from kudos.wiki, covering programmes, credits, discovery, and viewing references.
odan.github.io
A curated list of resources for learning PHP, covering tutorials, books, online courses and reference material. Topics include the LAMP stack, HTML, CSS, JavaScript, protocols, local development environments, tools, frameworks, object-oriented programming, design patterns, databases, testing, security and architecture.
informatics.jax.org
Mouse Genome Informatics is an international database resource for the laboratory mouse. It provides integrated genetic, genomic, and biological data to facilitate the study of human health and disease. The site offers search and analysis tools covering genes, phenotypes, alleles, human disease, gene expression, recombinase function, strains, SNPs, homology, and references.
mpds.io
MPDS (Materials Platform for Data Science) is an online materials database originating from the PAULING FILE project, containing over 3 million entries of physical properties, crystal structures, and phase diagrams for inorganic materials. It offers multiple access tiers: free open access with login includes search by over 15 criteria, analysis tools, interactive plots, and access to around 50k datasheets; paid full GUI access adds detailed visualizations, data export in over 5 formats, high-quality redrawn phase diagrams, and access to around 3 million datasheets with full references and DOIs; paid API full access provides machine-readable data, regular updates, documentation and support, and OPTIMADE standard support, and includes full GUI access.
name-reaction.com
Name-Reaction.com presents organic chemistry reactions with detailed, step-by-step mechanisms. Each step is shown without shortcuts, with colour-coded lone pairs and reaction arrows. Hovering over a reaction name gives a schematic preview of reagents, conditions and products, and references are retrieved from science journal databases in ACS style with links to article titles and DOIs.
biblio.ub.uni-heidelberg.de
A central reference tool for books and periodicals published by the North Indian publishing house Naval Kishore Press, founded in 1858. It aims to facilitate access to works held in library collections worldwide, and some entries link to freely accessible digitised editions. The bibliography currently contains about 3,600 entries.
no-intro.org
No-Intro catalogs the best available copies of ROMs and digital games, providing DAT files for ROM managers and an online database. The site links to a wiki, forums and community channels.
npg.org.uk
The National Portrait Gallery's online collection provides a searchable database of portraits from the 8th century to the present day. It covers a primary collection of more than 11,000 paintings, drawings, miniatures and sculptures, a photographs collection of over 250,000 items and a reference collection of over 70,000 portraits. Themed groups and a Schools hub with art and history resources are also listed.
pdfiles.net
PDFiles is a site for downloading PDF ebooks, described as offering many electronic books in Arabic and English, including technical references. It lists English and Arabic book sections, categories such as Android, databases, programming and networks, and a latest books section with titles available to download.
pleco.com
Pleco is a Chinese language reference and learning app for iPhone, iPad, and Android. It offers OCR lookup, handwriting lookup, licensed dictionary databases, audio recordings, flashcards, a document reader, a screen reader for Android, and animated stroke order diagrams.
sfuvet.swiss
Publications SFUVET is a listing of publications by researchers at the Swiss Federal university for Vocational Education and Training. It presents references to journal articles and book contributions, many marked as in press or forthcoming, with hundreds of results shown.
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.
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.
retrostic.com
Retrostic is a site for downloading retro game ROM and ISO files for consoles such as GB, GBC, GBA, NDS, N64, NES, SNES, Sega and Atari. It also offers an emulator section and a database of titles, and states direct download links carry no .exe files, viruses or disturbing advertisements.
sealang.net
SEAlang is a set of projects providing language reference materials for Southeast Asia, including bilingual and monolingual dictionaries, text corpora, and tools for complex scripts. Its Lab develops assistive technology for complex-script languages, and the Archives offer rare texts.
shipindex.org
ShipIndex.org is a vessel research database that indexes citations of ship names across maritime resources including books, journals, magazines, newspapers, CD-ROMs, websites and online databases. It notes which references include illustrations or crew and passenger lists and where resources can be found or purchased. Guests have free access to over 150,000 citations from 74 resources.
b3log.org
SiYuan is an open-source, local-first, privacy-first note-taking app. It offers Markdown, block references, bidirectional links, databases, and multi-device sync for personal knowledge management. Content is organized at the block level, with built-in block-level and span-level elements, and blocks support zoom-in focus with breadcrumb navigation. A free tier includes local storage; PRO features require a one-time purchase and third-party sync services.
ss64.com
SS64 is a reference guide containing syntax and examples for prevalent computing commands for database and operating systems, covering Windows CMD, PowerShell, MacOS, Linux bash and SQL Server. The site is developed by Simon Sheppard and distributed under a Creative Commons Attribution-NonCommercial licence.
tropical.theferns.info
The Useful Tropical Plants Database contains information on the edible, medicinal and other uses of several thousand plants grown in tropical regions. It is a work in progress, with records added and updated regularly. It currently lists 13362 species, and information is fully referenced.
bnk.institutkurde.org
The Kurdish Digital Library is maintained by the Kurdish Institute of Paris and holds the largest Kurdish library in the Western World. It contains over 10,000 monographs about the Kurds in 25 languages, along with documents, reviews, newspapers, photographs, videos, posters, audio archives and music recordings. References to these works have been computerized, and selected works are being digitized.
zfin.org
The Zebrafish Information Network (ZFIN) is a database of genetic and genomic data for the zebrafish (Danio rerio) as a model organism. It provides expertly curated, organized and cross-referenced zebrafish research data, with search tools for genes, expression, mutants, antibodies, BLAST and publications.