Mathtools.Net is a technical computing portal for all scientific and engineering needs. The portal is provided as a free service to the scientific community and contains useful links for technical computing programmers.
The Stony Brook Algorithms Repository
The Stony Brook Algorithms Repository is the Web site of Steven S. Skiena, author of "The Algorithm Design Manual". In The Stony Brook Algorithm Repository Steven Skiena publishes his comparison of different implementations of combinatorial algorithms. Even though the tested LEDA version was quite old it placed first many times.
Cordis is the European Union Research & Development Information Service. The portal is provided as a free service and contains information on European Research and Innovation activities.
The Geospatial Analysis Guide addresses the full spectrum of spatial analysis and associated modelling techniques that are provided within currently available and widely used geographic information systems (GIS) and associated software.