ACM Portal: full-text collection of all Association for Computing Machinery publications, including journals, conference proceedings and books
IEEE Xplore Digital Library: full-text documents in electrical engineering, computer science and electronics.
Emerald: Journals and e-books covering business, management and related fields
ScienceDirect: full-text journals and e-books on a range of subjects (free registration may be required)
SpringerLink: full-text journals, e-books and reference works on a wide range of subjects
Web of Science: scientific journal article and e-book citation indexing service that also provides full text links to other databases
ZETOC: Tables of contents for research journals (not full-text)