Free Software for Statistical Analysis
PSPP - Wikipedia
PSPP is a free software application for analysis of sampled data, intended as a free alternative for IBM SPSS Statistics. It has a graphical user interface and conventional command-line interface. It is written in C and uses GNU Scientific Library for its mathematical routines. The name has "no official acronymic expansion".
JASP - Wikipedia
JASP is a free and open-source graphical program for statistical analysis, designed to be easy to use, and familiar to users of SPSS. Additionally, it provides many Bayesian statistical methods. JASP generally produces APA style results tables and plots to ease publication.
Free Software for Network Analysis and Data Visualization
Gephi - Wikipedia
The Gephi Consortium, created in 2010, is a French non-profit corporation which supports development of future releases of Gephi. Members include SciencesPo, Linkfluence, WebAtlas, and Quid. Gephi is also supported by a large community of users, structured on a discussion group and a forum and producing numerous blogposts, papers and tutorials.
Neo4j Graph Platform - The Leader in Graph Databases
Meet Neo4j: The graph database platform powering today's mission-critical enterprise applications, including artificial intelligence, fraud detection and recommendations.