CiteSpace 3.1 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The program lies within Development Tools, more precisely IDE. The most popular versions among the program users are 3.1 and 1.0.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This free software was originally produced by Chaomei Chen, Drexel University.
From the developer:
CiteSpace is a freely available Java application for visualizing and analyzing trends and patterns in scientific literature. It is designed as a tool for progressive knowledge domain visualization.
It focuses on finding critical points in the development of a field or a domain, especially intellectual turning points and pivotal points.
You may want to check out more software, such as KiXforms, SourceBoost IDE or JFormDesigner, which might be similar to CiteSpace.