Review of Top Free and Open Source Chart Builder Software: Features, Pricing, Alternatives, Free Demos, Free Trials of RAWGraphs, Amira, Avizo, D3.js, Plotly, Chartist.js, Datawrapper, Leaflet, Gapminder, Weave, ParaView, NodeBox, JpGraph, dygraphs, MayaVi, ggplot2, IBM OpenDX, Envision.js, Polymaps, Voreen, Vaa3D, Prefuse, VTK, SIMILE Exhibit, Circos, Tomviz, VisIt, PathVisio, Ggobi, Charted, Flare are some of the Top Free Open Source Chart Builder Software.