There was a download of Widelands 1.0 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The program lies within Games, more precisely Strategy. We recommend checking the downloaded files with any free antivirus. The most popular version among Widelands users is 1.0. The actual developer of the free program is Widelands Development Team. Widelands.exe is the most frequent filename for this program's installer.
From the developer:
Widelands is an open source (GPLed) real-time strategy game. It is built upon the SDL and other open source libraries and is under heavy development.
You may want to check out more software, such as Widelands Build13, which might be related to Widelands.