Protein Explorer, a RasMol-derivative: easy-to-use and powerful software for looking at macromolecular structure and its relation to function. proteinexplorer.org: FrontDoor to Protein Explorer.
netlib.org: collection of mathematical software, papers, and databases.
NIST (National Institute of Standards and Technology): math, statistics, and computational science.
GAMS (Guide to Available Mathematical Software) is a cross-index and virtual repository of mathematical and statistical software components of use in computational science and engineering. NIST GAMS.
ALPS (Algorithms and Libraries for Physics Simulations): open source project aiming at providing high-end simulation codes for strongly correlated quantum mechanical systems as well as C++ libraries for simplifying the development of such code.
boost.org: provides free peer-reviewed portable C++ source libraries.
oonumerigs.org: scientific computing in object-oriented languages. Index of libraries, tools, conferences, and mailing lists.
Blitz++: C++ class library for scientific computing.
TNT (Template Numerical Toolkit): interface for scientific computing in C++. TNT will integrate the functionlaity of Lapack++, IML++, SparseLib++, and MV++.
linear algebra libraries
BLAS (Basic Linear Algebra Subprograms): routines that provide standard building blocks for performing basic vector and matrix operations.
ATLAS (Automatically Tuned Linear Algebra Software): provides C and Fortran77 interfaces to a portably efficient BLAS implementation, as well as a few routines from LAPACK.
LAPACK (Linear Algebra PACKage): routines for solving systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalue problems, and singular value problems.
LAPACK Users' Guide.
MTL (Matrix Template Library): high-performance generic component library that provides comprehensive linear algebra functionality for a wide variety of matrix formats.
Overview table: freely ovailable software for linear algebra on the web (May 2004, Jack Dongarra).
Templates for the Solution of Linear Systems: Building Blocks for Iterative Methods (Richard Barrett, Michael Berry, Tony Chan, James Demmel, June Donato, Jack Dongarra, Victor Eijkhout, Roldan Pozo, Charles Romine, Henk van der Vorst).
Developer Pipeline is a site for software and web developers [...] "The Developer Pipelines let you filter by category to see the top articles from C/C++ User's Journal, Dr. Dobb's Journal, Software Development magazine, The Perl Journal, and Windows Developer Network, as well as see category-specific conferences, whitepapers, book reviews and products.".
RegExplorer is a visual regular expression explorer, it allows for writing regular expressions and visually see the matches, thus making regular expression much easier to write and maintain. (sourceforge project page, license: GPL, QPL).
HiSoftware Cynthia Says: web content accessibility validation solution, designed to identify errors in your content related to Section 508 standards and/or the WCAG guidelines.
MS-Windows help:
Annoyances.org,
aumha.org: MS-Windows support center (James A. Eshelman),
toejumper.net: troubleshooting and resource guide for MS-Windows (Michael Tuck).