User-Friendly Desktop Internet GIS (uDig) is an open source spatial data viewer/editor, with special emphasis on the OpenGIS standards for internet GIS, the Web Map Server and Web Feature Server standards.
uDig aims to be:
- User friendly – providing a familiar graphical environment for GIS users.
- Desktop located – thick client.
- Internet oriented – WMS, WFS, WCS, GeoRSS, KML, tiles geospatial web services.
- GIS ready – providing the framework on which complex analytical capabilities can be built, and gradually subsuming those capabilities into the main application.
It is a Java based open source desktop application framework, built with Eclipse Rich Client (RCP) technology.
Key Features
- An out-of-the-box application, with the ability to view, edit and print files, database (Oracle, SDE, PostGIS) and Web Feature Servers (WFS).
- An industry-standard extension framework (RCP) for adding new functionality to the application.
- A rich toolkit of Java functionality, ready for developers to build on.
- Uses GRASS for complex vector operations.
- PostGIS.
- WMS.
- Desktop Client with Drag and Drop integration for File explorer and Web Browser.
- Integrate with your existing infrastructure: ArcSDE, Oracle, DB2 and more.
- Work with local files: Shapefile, jpeg, png, tiff and more.
- Work with advanced spatial raster formats: ECW, MrSID, JPEG 2000.
- Support for compliant Web Map Servers (GeoServer, MapServer tested).
- Integrated Web experience with an embedded browser that recognises OGC web services and smoothly adds links to the onscreen map.
- Style Layer Descriptor control of rendering allowing you to publish your Map using the same settings in uDig as with popular Web Map Servers.
- Deep integration of standards allowing the application to swap between the appropriate service as required for display, interaction and editing.
- Printing and PDF Generation.
- Native support for many other data sources.
- Cross-platform support – runs on Linux, Mac OS X, and Windows.
Website: udig.refractions.net
Support: Documentation
Developer: Refractions Research
License: Dual BSD / EPL (Eclipse Foundation)

uDig is written in Java. Learn Java with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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