mirador : Mirador is a tool for visual exploration of complex datasets. It enables users to discover correlation patterns and derive new hypotheses from the dat...
TileMill : TileMill is an application for making beautiful maps
Streamlit : Streamlit is an open source app framework in Python language. It helps us create web apps for data science and machine learning in a short time.
Mapstraction : A javascript library to hide differences between mapping APIs.
The GeoNames geographical database covers all countries and contains over eleven million placenames that are available for download free of charge.