Sextante is an opensource library of all the algorithms grouped in different blocks. It is integrated within the gvSIG toolbox.
3D
Basic hidrologycal analysis
Basic tools for raster layers
Buffers
Calculus tools for raster layer
Costs, distances and routes
Development
Fire modeling
Focal statistics
Fuzzy logic
Geomorphometry and terrain analysis
Geosocial
Geostatistics
Image processing
Indices and other hydrological parameters
localiza
Local statistics
Location/allocation
Non-spatial
Pattern analysis
Profiles
Raster categories analysis
Raster creation tools
Rasterization and interopolation
Raster layer analysis
Reclassify raster layers
Statistical methods
Table tools
TIN
Tools for line layers
Tools for point layers
Tools for polygon layers
Tools for vector layers
Topology
Vectorization
Vegetation indices
Visibility and lighting