worldwidescience.org 的前十大競爭對手

world-science.net

the world's most exciting science news, long before it's in the papers

freepatentsonline.com

complete patent searching database and patent data analytics services.

techxtra.ac.uk

resource discovery tool for engineering, mathematics, and computing. find articles, key websites, books, the latest industry news, job announcements, ejournals, eprints, technical reports, the latest research, thesis & dissertations and more.

science.gov

science.gov is a gateway to government science information provided by u.s. government science agencies, including research and development results.

primaryscience.ie

Taighde Éireann – Research Ireland, a new agency, drives competitive research and innovation funding, amalgamating SFI and IRC under Ireland's Impact 2030 strategy.

freebase.com

everything you need to build better apps.

osti.gov

u.s. department of energy office of scientific and technical information - osti.gov is the primary search tool for department of energy science, technology, and engineering research information funded by the us department of energy and the organizational hub for the office of scientific and technical information. - homepage basic content,department of energy science,department of energy technology,department of energy engineering,department of energy research information,search tool,

scholar.google.com

google scholar provides a simple way to broadly search for scholarly literature. search across a wide variety of disciplines and sources: articles, theses, books, abstracts and court opinions.