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Furthermore, some programs are only partly free (for example, accessing abstracts or a small number of items), whereas complete access is prohibited (login or institutional subscription required). The "Size" column denotes the number of documents (articles, publications, datasets, preprints) rather than the number of citations or references.
Web portal. A web portal is a website that provides a broad array of services, such as search engines, e-mail, online shopping, and forums. [4] American web portals included Pathfinder, Excite, Netscape 's Net Center, Go, NBC, MSN, Lycos, Voila, Yahoo!, and Google Search. [4]
Cross-platform open-source desktop search engine. Unmaintained since 2011-06-02. LGPL v2 : Terrier Search Engine: Linux, Mac OS X, Unix: Desktop search for Windows, Mac OS X (Tiger), Unix/Linux. MPL v1.1: Tracker: Linux, Unix: Open-source desktop search tool for Unix/Linux GPL v2 : Tropes Zoom: Windows: Semantic Search Engine (no longer available)
Gigablast was an American free and open-source web search engine and directory. Founded in 2000, it was an independent engine and web crawler, [6] developed and maintained by Matt Wells, a former Infoseek employee and New Mexico Tech graduate. [7] During early April 2023, the website went offline without warning and without any official statement.
Comparison of web search engines. Web search engines are listed in tables below for comparison purposes. The first table lists the company behind the engine, volume and ad support and identifies the nature of the software being used as free software or proprietary software. The second and third table lists internet privacy aspects along with ...
Cue acted as a desktop search, indexing online social networking accounts, and thereby creating a “ personal cloud .”. Cue offered a free version that allowed users to add a certain number of accounts, while a paid version allowed users the option to "unlock" other sources and get more index space. [5]
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. . Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other ...
Kagi. Kagi is a paid ad-free search engine developed by Kagi Inc., a company located in Palo Alto, California. [1] It is based on a monthly subscription and requires users to be logged into an account to search. It functions as a metasearch engine but also has its own indexes for websites and news. [2] The name means "key" in Japanese (鍵) and ...