This website offers numerous pointers to public codes (in C, C++, F77, F90 and Matlab) for solving ordinary and partial differential equations:: http://www.scicomp.uni-erlangen.de/index.shtml
The MGNet website centralizes resources on multigrid/multilevel methods:: http://www.mgnet.org/mgnet-codes.html
Our postdoctoral fellow Wolfgang Bangerth at CSM is the principal author and maintainer one of the finite element library deal.II.: http://www.dealii.org/
UG is a versatile software developed at the University of Heidelberg. Part of their main developers Gabriel Wittum, Klaus Johannsen and Juergen Geiser are in collaboration with CSM in solving interesting multiphase flow/medical application problems with UG.: http://www.iwr.uni-heidelberg.de/groups/techsim/
Finite Element ToolKit (FEtk) is a parallel adaptive multilevel tools for solving coupled system of PDEs and integral equations. Our postdoctoral fellow Burak Aksoylu is one of the contributors to FEtk.: http://www.fetk.org

The best source of linear systems associated to practical applications:: http://math.nist.gov/MatrixMarket/
The matrix computation toolbox by Nicholas Higham:: http://www.ma.man.ac.uk/~higham/mctoolbox/
This website offers numerous pointers to public codes (in C, C++, F77, F90 and Matlab) for solving linear algebra problems:: http://www.scicomp.uni-erlangen.de/index.shtml
A toolkit for sparse matrix computations written by Y. Saad:: http://www-users.cs.umn.edu/~saad/software/SPARSKIT/sparskit.html

James Spall has organized handy and interesting material related to his book on Introduction to Stochastic Search and Optimization: Estimation, Simulation and Control.: http://www.jhuapl.edu/ISSO/
One of the best web sites for accessing a wide list of resources on global optimization:: http://solon.cma.univie.ac.at/glopt.html
Faculty of mathematics and natural sciences at the University of Bergen links on global optimization:: http://www.fi.uib.no/~antonych/glob.html
Marquette University offers a wide list of resources on global optimization:: http://www.mscs.mu.edu/mscs/
The most popular and excellent structure guide for optimization (NEOS guide):: http://www-fp.mcs.anl.gov/otc/Guide/

INEEL shows an instrumented filed with more than 500 sensors on a site located in a abandoned gold mine at South Dakota.: http://geophysics.inel.gov/h2/hermes/pages/index.php

The Datacutter is a Grid computing tool that allows the management of large data sets and it was cornerstone in the development of information technologies for the instrumented oilfield in the NSF-ITR project. Developed by our partners (Joel Saltz, Tahsin Kurc, Umit Catalyurek, Alan Sussman, among others) from the The Ohio State University and the University of Maryland:: http://www.datacutter.org
Manish Parashar has been a close CSM collaborator in the development of IPARS for several years and under the current NSF-ITR project. He has developed an efficient set of HPC tools for that purpose (e.g., Discover, MACE, Grace/DAGH, among others). Check his personal website.: http://www.caip.rutgers.edu/~parashar/
Distributed matrix toolkits written in JAVA for solving scientific computing problems.: http://ressim.berlios.de/
The PETSc website offers a high performance library for solving PDEs and general linear algebra problems:: http://www-unix.mcs.anl.gov/petsc/petsc-as/
Pointers to several resources in HPC:: http://www.jics.utk.edu/
One of the main Grid computing resources site:: http://www.gridcomputing.com/

One of the main resources for latex styles and utilities:: http://www.tug.org/interest.html

The Chalmers University of Technology at Sweden has put together a nice material for computational and mathematical modeling:: http://www.bodysoulmath.org/
Nick Trefethen has centralized important numerical packages and resources:: http://web.comlab.ox.ac.uk/oucl/work/nick.trefethen/tools.html
The guide to mathematical software (GAMS):: http://gams.nist.gov/
An extensive pointer compilation of mathematical software:: http://www.mat.univie.ac.at/~neum/software.html
The must-pointer to numerical software (Netlib):: http://www.netlib.org/
Engineering/scientific resources in Linux by the IEEE:: http://www.comsoc.org/vancouver/scieng.html
A nice source of geoscience e-literature: http://samizdat.mines.edu/