ACM: Special Interest Groups Guide: Lists the SIGs and their purposes, linking to each of them

Apache Hadoop: Official site of the Apache project to provide an open-source implementation of frameworks for reliable, scalable, distributed computing and data storage

Chicago Journal of Theoretical Computer Science: Electronic journal hosted by the University of Chicago

Complexity People: A list of researchers, maintained by the Electronic Colloquium on Computational Complexity

DBLP: Conferences and Workshops: Large list of Computer Science Conferences and Workshops : past, present and future

Theoretical Computer Science on the Web: A directory of resources related to theoretical computer science from Stanford University