DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, committed to ensuring quality content is freely available online for everyone.

ERIC is an online library of education research and information, sponsored by the Institute of Education Sciences (IES) of the U.S. Department of Education.

Search for LibGuides content and librarian authors, and find great examples of guides from our worldwide user community.

Millions of books online

Copyscape is a free plagiarism checker. The software lets you detect duplicate content and check if your text is original.

(Bielefeld Academic Search Engine) More than 340 mio. scientific documents from more than 11.000 content providers. BASE is one of the world's most voluminous search engines for academic web resources.

Academia.edu is a place to share and follow research.

Find names, phone numbers, property addresses, & email addresses. First people search free plus 500 bonus Search Tokens. Instant online results, batch files, API, and professional assisted searches.

Emailsearch.io is the leading solution to find, verify and enrich professional email addresses. Start using for free and connect with the people that matter for your business.

WhoisXML API offers domain, WHOIS, IP and DNS data feeds, APIs, and research & monitoring tools for greater enterprise security and data-driven business.

Tomba is the leading solution to find and verify professional email addresses. Start using Tomba and connect with the people that matter for your business.

Global Scammer Database | Report Scammer | Reverse Lookups | Search by email, username, picture, phone number & Crypto Address.

Industry leading IP and domain reputation data to protect emails, networks and provide insight. We protect against cyber threats.