Directory
Search and Discovery gathers the tools people use to find things online. Dataset and data search covers portals that index public data, statistics, and open government records. Academic and research search looks through papers, citations, and scholarly archives, while general search engines and their tools cover everything from operator guides to alternative engines. Metasearch services query several engines at once, and image search, media search, and curated web directories fill in the specialised cases. News search, file and open directory search, and product and shopping search cover narrower needs. Topic names describe what each service searches, so you can tell a citation index from a general web engine before you open it. Some entries are experiments rather than finished products, so expect a mixed level of polish.
ALEXA is a collection of genomic methods for alternative expression analysis, identifying and quantifying alternative mRNA transcripts produced by alternative transcript initiation, splicing and polyadenylation. The site provides supplementary materials, source code and downloads for studies and the ALEXA-Seq method for alternative expression analysis by massively parallel RNA sequencing.
Digital cultural heritage archive of Alexandria, Egypt, founded 2023.
Digital library for searching books, documents, images and online collections.
Browse research datasets and dataset related to biology.
ALHATORAH.ORG is a digital project re-envisioning the study and teaching of Jewish Torah texts. It provides free access to Tanakh, Mishna, Talmud, Halakhic works, siddurim and haggadot, alongside learning tools including Mikraot Gedolot, Daf Yomi, customizable text displays, power search, a concordance, and a commentators timeline. Its resources are also featured on Hatanakh.com, OU Torah, and YUTorah, and the project accepts volunteer contributions for content writing, editing and translation.
AliExpress is an online marketplace offering products from China across categories such as fashion, clothing, electronics, toys, tools, and home and garden. It advertises free shipping and lists daily deals, discounts, and coupon codes.
Online catalog of the Library of the Dominican Institute for Oriental Studies.
Searchable public dataset catalog maintained by public agencies.
All The Places is an open data project that indexes over 20 million points of interest from more than 4,100 web scrapers worldwide. Its downloads are gzipped ndjson files, each line a GeoJSON feature with consistent properties, updated weekly. The downloads and data are released under the CC-0 waiver; the spider software is MIT licensed.
Bibliographic database for finding publications, citations and scholarly records.
Browse research datasets and survey data related to economic policy, applied economics.
Search publications, authors, citations and related academic metadata.
The Allele Frequency Net Database is a freely available repository for immune gene frequencies in worldwide populations. Users can contribute allele, haplotype and genotype data and search existing records. HLA datasets are classified into Gold-Silver-Bronze standards, and a second version is in development.
The Allen Brain Map is an Allen Institute for Brain Science resource for characterizing and mapping brain cells. It provides reference anatomical atlases and datasets including adult mouse, adult human and developing brain atlases, alongside a Brain Knowledge Platform for exploring, analyzing and visualizing multi-modal neuroscience data, with documentation covering guides, API references and tutorials.
AllSides is a platform that provides balanced news coverage and media bias ratings. It uses non-partisan, crowd-sourced technology to present news stories and perspectives from left, center and right-leaning sources, alongside bias rating tools, dialogue resources and educational materials.
Platform for hotels and airline booking.
Searchable repository for finding basic in biology and medicine datasets and genomic data.
Find and access basic in biology and medicine research data, with indexed datasets.
Search construction engineering and architecture data collections and supporting datasets from CAN.
The Alternative Fuels Data Center provides information, data and tools about alternative and renewable fuels and advanced vehicles. It is aimed at fleets, fuel providers, policymakers, cities, states and Clean Cities coalitions. Site resources include a station locator, state information, a tool finder, a vehicle cost calculator and maps of fueling stations.
The Alvin Frame-Grabber system gives the NDSF community online access to Alvin's video imagery co-registered with vehicle navigation and attitude data. It is used for shipboard analysis, planning deep submergence research cruises, and synoptic review of data after a cruise.
Research data portal for exploring life records, including datasets.
Web search service for locating pages, resources and topic-specific results.
Online catalogue of three Cypriot libraries.
