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menial is a webserver, written in C++ and licensed under a GPLv3 license. It is intended to be simple in setup and configuration.
A precompiled binary for Linux systems and the source code can be found in the download section.
The help page will help you with the configuration of your menial installation.
If you wish to compile menial youself, you can find an compiling and installation instruction on the documentation page.
Please make sure you have read the license notices on License. menial is licensed under a GPLv3 license but it uses third-party libraries which are licensed under a MIT license.