GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.

Arcadia Enterprise - Arcadia Enterprise is the ultimate native BI for data lakes with real-time streaming visualizations, all without adding hardware or moving data.

Dr. Geo - Dr. Geo, a software to design & manipulate interactive geometric sketches.

Azure Databricks - Azure Databricks is a fast, easy, and collaborative Apache Spark-based big data analytics service designed for data science and data engineering.

Giac/Xcas - Free computer algebra system

Yandex.Metrica - A free tool for evaluating site traffic and analyzing user behavior