• arXiv.org
Open access to 788,666 e-prints in Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics.
• CiteSeerX
CiteSeerx is an evolving scientific literature digital library and search engine that has focused primarily on the literature in computer and information science.
• Computer Science Bibliographies
A collection of bibliographies of scientific literature in computer science from various sources, covering most aspects of computer science.