ArcGIS Online provides ArcGIS users with a set of foundation services that are deeply integrated with ArcGIS. As an ArcGIS user, you have immediate access to map services, task services, software developer kits (SDKs),...

This site is ESRI's home on YouTube. Users may view videos on the topics of ArcGIS, careers and opportunities at ESRI and the role of GIS in the larger world. The videos range in length and flash is required to view...

Despite its curious name, Fast Fourier Transform in the West (FFTW) is a powerful, free "C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions, of both real and complex data,...

Mgfun is a group of Maple packages intended for calculations with multivariate generating functions, in particular for their symbolic summation and integration, and for the proof of special function and combinatorial...

The Free Software Foundation (FSF) was established in 1985 to promote "computer users' rights to use, study, copy, modify, and redistribute computer programs." That is, the organization promotes the development and use...