lumify (lumify.io) developed by Altamira
Visual Understanding Environment (http://vue.tufts.edu/) from Tufts
Lumify is for networked data analysis and data annotation
VUE is more for presentation but has very basic network, and semantic analysis tools and ontology mapping capabilities.
and last but not least - TimeFlow is old but useful for mapping temporal sequences quickly and easily. See https://drawingbynumbers.org/tools/timeflow.html