Physics, mathematics, computer science, quantitative biology, quantitative finance, statistics
Open access to pre-prints of research articles and conference publications.
Articles are not peer-reviewed by arXiv..
Database design, software development, ecommerce, LANs, WANs, Intranets, the Internet, etc.
Computer science, programming, artificial intelligence, cybernetics, information systems, robotics, and software.
Electrical engineering, computer science, electronics, oceanography, optics