- Web of Science – Citation database
- Journal Citation Reports – Tool for evaluating academic journals (Quartils, IF …)
- Ulrich’s Periodicals Dictionary – an easy to search source of detailed information on more than 300,000 periodicals
- Science Direct – Elsevier fulltext database
- Springer – Fulltext database of Kluwer and Springer
- Scopus – Abstract + citation database
- ArXiv – E-prints archive
- DOAJ – Directory of open access journals
