Mapserver is an open-source web mapping application that enables users to view, create, and edit maps over the internet. It is a platform for publishing GIS data to the web, offering interactive tools for users to explore and analyze mapped data. Mapserver can be used to create online maps, embed them into websites, and provide users with interactive tools to view and manipulate data. It can also be used to overlay multiple layers of data to create complex maps and visualizations. Mapserver can be used to create custom web applications and services, as well as to create web-based mapping applications for mobile devices. It is an excellent tool for creating travel and location applications, such as route planners, flight tracking, and real-time traffic information.
GRASS GIS is not for web servers