GraphThing - GraphThing is a tool that allows you to create, manipulate and study graphs.
UCINET - UCINET for Windows is a software package for the analysis of social network data.
SocNetV - Social Network Visualizer (SocNetV) is a cross-platform, user-friendly free software application for social network analysis and...
NodeXL - Home
jsflap - A web-based NFA and DFA construction and testing tool.
Gephi - Gephi is an open-source software for visualizing and analyzing large networks graphs.