"The Computer Security Resource Center (CSRC) facilitates broad sharing of information security tools and practices, provides a resource for information security standards and guidelines, and identifies key security web resources to support users in industry, government, and academia."

Learn to code interactively, for free.

A starting point for finding information about computer system performance benchmarks, benchmark results, and benchmark code.

DMPTool is a resource for creating a data management plan. It is free, open source, and supports all major funders. There are links to funder requirements, sample DMPs, and guidance resources.

Developed by the Free Software Foundation and UNESCO, this directory lists free software that runs under free operating systems. Over 4,000 software packages are listed by subject; it is also fully searchable.