Social Network Analysis tools

Tools for analysis of the topologies of social (or other) networks

Typical features:

download/import of social network data
graphical mapping
identification of clusters and gatekeepers
production of key measures

Examples

NodeXl / NodeXLPro

available as paid-for and free versions
core product used to be both free and useful
free version now significantly feature-crippled
paid-for version is expensive, and probably limited by service API rates anyway

open source tool
not tested yet

See also

Social network analysis