Graphviz (Graph Visualization Software) is a package of open-source tools initiated by AT&T Labs Research for drawing graphs specified in DOT language scripts…

PSPP is a free software application for analysis of sampled data, intended as a free alternative for IBM SPSS Statistics.

FusionCharts Suite XT is a javascript charting solution.

RAWGraphs allows you to export visualizations as vector (SVG) or raster (PNG) images and embed them into your web page.

Gephi is the leading visualization and exploration software for all kinds of graphs and networks.

Cacti is a network graphing solution designed to harness the power of RRDTool's data storage and graphing functionality.

Plotly lets users easily create interactive charts and dashboards to share online with their audience.

GUN is a utility for synchronizing data.