Errare humanum est
Economics
Minnesota Economics | Minneapolis FEDEconPapers | IDEAS | NBER
Computing
Software at IDEAS (for economists)Maxima — A fairly complete computer algebra system written in Lisp with an emphasis on symbolic computation
GNU R — A language and environment for statistical computing and graphics similar to the S language and environment
C++ FAQ Lite
NIST Course on C++ Programming for Scientists
Cygwin — A Linux-like environment for Windows
Netlib — A collection of mathematical software, papers, and databases
ATLAS — Automatically Tuned Linear Algebra Software
LAPACK — Linear Algebra PACKage
LAPACK Users' Guide
GiNaC — An open framework for symbolic computation within the C++ programming language
Gnuplot — A portable command-line driven interactive data and function plotting utility for UNIX, IBM OS/2, MS Windows, DOS, Macintosh, VMS, Atari and many other platforms
Octave — A high-level language, primarily intended for numerical computations, mostly compatible with Matlab.
GNU Octave manual