Ten search engines for researchers that go beyond general search engine (Google)

Open access search engines

CORE

What is it?
An experimental service, allowing keyword and semantic search of over 10 million open access articles.

Key feature: If you find an article you like, CORE will find similar ones by analysing the text of that article.


Aggregating the world’s open access research papers

We offer seamless access to millions of open access research papers, enrich the collected data for text-mining and provide unique services to the research community.

https://core.ac.uk/

an example:
https://core.ac.uk/display/8507685
(my PLOS-ONE)

BASE

What is it?
BASE is one of the world's most voluminous search engines especially for academic open access web resources from over 2,000 sources.

Key features: Allows you to search intellectually selected resources and their bibliographic data, including those from the so-called ‘deep web’, which are ignored by commercial search engines. There are several options for sorting the results list and you can browse by Dewey Decimal Classification and document type.

Library catalogues

Copac

What is it?
A Jisc service allowing you to look through the catalogues of over 70 major UK and Irish libraries.

Key features: Good for locating books and other material held in research collections in the UK;  especially useful for humanities.


France: sudoc

Web Scale Discovery services

What is it?
Many university libraries have one of these services working behind the scenes, they index a vast range of academic resources and provide sophisticated search tools.

Key features: The search includes journal articles, e-books, reviews, legal documents and more that are harvested from primary and secondary publishers, aggregators and open-access repositories.

Zetoc

What is it?
One of the world’s most comprehensive research databases, this Jisc service gives you access to over 28,000 journals and more than 52 million article citations and conference papers through the British Library’s electronic table of contents.

Key features: Researchers can get email alerts of the table of contents in journals, keeping them up to date with the latest literature in their field.

Europeana

What is it?
This is a meta-catalogue of cultural heritage collections from a range of Europe's leading galleries, libraries, archives and museums. The catalogue includes books and manuscripts, photos and paintings, television and film, sculpture and crafts, diaries and maps, sheet music and recordings.

Features: You can download your resource, print it, use it, save it, share it and play with it.

Social web

Twitter

What is it?
Harness the power of social discovery and particularly the #icanhazpdf hashtag for locating PDFs that you do not have access to through your institution.

Features: Tweet an article you need using this hashtag and someone will point you to a copy that you can access.


Ref.
https://www.jisc.ac.uk/blog/ten-search-engines-for-researchers-that-go-beyond-google-11-jul-2013?from=promo