uDig is described as 'GIS software program produced by a community led by Canadian-based consulting company Refractions Research. It is based on the Eclipse platform and features full layered open source GIS. It is written in Java and released under GNU Lesser General Public License' and is a GIS software in the travel & location category. There are more than 25 alternatives to uDig for a variety of platforms, including Windows, Web-based, Linux, Mac and Self-Hosted apps. The best uDig alternative is OpenFreeMap, which is both free and Open Source. Other great apps like uDig are QGIS, VersaTiles, Mapbox Studio and Plus Codes.
Azimap is a web GIS developed on open source principles and offers GI professionals with the tools to visualise, analyse and share their spatial data on the web.
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