What are some alternatives?
When comparing Google and GeoGebra, you can also consider the following products
DuckDuckGo - The Internet privacy company that empowers you to seamlessly take control of your personal information online, without any tradeoffs.
GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.
StartPage - Startpage search engine, the new private way to search Google. Protect your Privacy with Startpage!
Matplotlib - matplotlib is a python 2D plotting library which produces publication quality figures in a variety...
Bing - Bing helps you turn information into action, making it faster and easier to go from searching to doing.
SciDaVis - SciDAVis is a free application for Scientific Data Analysis and Visualization.