ACM Digital Library
54,000 on-line articles from 30 journals and 900 proceedings of the Association for Computing Machinery. Free bibliography, some abstracts.
FirstSearch
Access to on-line publications and citations including computer sciences (for all fields: 11000 full-text journals, 75 databases and citations from 12500 journals).
IEEE Computer Society Digital Library
On-line access to 18 IEEE journals and to the proceedings of 150 conferences in computer science. Free access to abstracts and bibliography.
IEEE Online Publications
650,000 on-line articles from 12,000 journals or conferences. Different levels of subscription are possible.
Ingenta
On-line articles from 4500 journals in all fields and abstracts from 20,000 journals. Free access to bibliography.
Inspec
English-language bibliographic information service providing access to scientific and technical literature in physics, electrical engineering, electronics, communications, control engineering, computers, computing, information technology, manufacturing and production engineering.
Safari Bookshelf
Electronic reference library for programmers and IT professionals. The subscription service lets you search, annotate, read and build your own reference collection online.
Science - Computer Technology databases
List of (bibliographic) databases in computer sciences.
ScienceDirect
On-line articles mainly from Elsevier publications (120 journals and 240 books in computer sciences and related fields).
Springer LINK
On-line articles from 50 journals in computer sciences. Free access to bibliography and abstracts.