SIREN.io - Siren is an investigative intelligence platform.
DataWalk - DataWalk is a software platform to connect numerous large data sets, both external and internal, into a single repository for fast visual analysis.
Visallo - Visallo helps intelligence analysts, law enforcement detectives, and fraud investigators produce...
Sentinel Visualizer - Link Analysis, Data Visualization, Geospatial Mapping, and Social Network Analysis (SNA) with Sentinel Visualizer
Netglub - Netglub, the really open source information gathering solution.
Gephi - Gephi is an open-source software for visualizing and analyzing large networks graphs.