uDig, short for "User-friendly Desktop Internet GIS," is an open-source desktop application designed for geographic data processing and analysis. Developed by Refractions Research, uDig aims to offer a user-friendly platform for spatial data and services that can handle multiple data formats and sources including integrated web services. It is built on a robust, plug-in-based framework that allows it to be easily extended and customized for specific needs.The software supports both raster and vector data, and provides typical GIS functionalities such as map creation, importing and analyzing geographical information, and connecting to distributed data using common standards like WFS and WMS. uDig\'s intuitive graphical user interface (GUI) is particularly designed to assist users in creating sophisticated GIS analyses and visualizations without extensive technical knowledge.For developers and advanced users, uDig offers an approachable platform to customize and extend its capabilities through its open-source nature, enabling a productive interaction with the broader geographic data processing community. Visit uDig at http://udig.refractions.net/ to download the software, access documentation, explore plugins, and participate in the community forums.