i2p Search
i2psearch.com is a specialized search engine and directory designed to index and discover “eepsites” within the I2P (Invisible Internet Project)
Search
Search engines and search tools, from the most famous ones to very specialized. Note that searches for standards and regulations have their dedicated Standards category and are therefore not included here.
The category lists specialized search engines, scientific paper and preprint search, patent search and clinical trial search. Reverse image search, free image search engines, material, chemical and electronic component databases and web archives cover other kinds of content. Darknet search engines, blockchain explorers, IoT device search, FTP file search and plagiarism checkers complete it.
Onion.live Darknet Search
Onion.live is a specialized search engine and directory for the Tor network that provides a centralized repository of “verified” (editor
Openverse Free Images Search
Openverse is an open-source search engine that aggregates over 700 million Creative Commons-licensed and public domain media files, including images
FDA Orange Book: Approved Drug Products
The FDA Orange Book, officially titled Approved Drug Products with Therapeutic Equivalence Evaluations, serves as the definitive regulatory database for
Europeana Images and Archives Search
Europeana aggregates and provides access to over 50 million digitized items from more than 3,500 European cultural heritage institutions. The
Internet Archive: WayBack Machine
Search over 580+ billions pages … the current version and many of the previous versions over the years. Free to
SlideShare Documents Repository
A great search on slide decks over any topic. Transcript of slide texts is most of the time also provided.
PubChem Chemical Information Search
Hosted by the National Library of Medicine, PubChem is a comprehensive, open-access chemical database maintained by the National Center for
PubMed Medline Citations and Abstracts Search
Hosted by the National Library of Medicine, search through 32 million citations for biomedical literature from MEDLINE, life science journals,
European Database on Medical Devices (EUDAMED)
Search for devices or certificates for any registered (mandatory) medical device in the EU: EUDAMED is the centralized IT system