SIREN.io - Siren is an investigative intelligence platform.
UCINET - UCINET for Windows is a software package for the analysis of social network data.
DataWalk - DataWalk is a software platform to connect numerous large data sets, both external and internal, into a single repository for fast visual analysis.
Gephi - Gephi is an open-source software for visualizing and analyzing large networks graphs.
SpiderFoot - Open source intelligence (OSINT) automation tool.
Pajek - Pajek is a lightweight solution developed from scratch by an extraordinary team of developers for the purpose of Large Network Analysis.