Google Chart Tools - Google Chart Tools is a world’s most popular tool that allows users to display their data on their website via simple or attractive visualizations.
GeoGebra CAS Calculator - Free online algebra calculator from GeoGebra: solve equations, expand and factor expressions, find derivatives and integrals
Chartio - Chartio is a powerful business intelligence tool that anyone can use.
GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.
Google Data Studio - Data Studio turns your data into informative reports and dashboards that are easy to read, easy to share, and fully custom. Sign up for free.
Dr. Geo - Dr. Geo, a software to design & manipulate interactive geometric sketches.