SME Server

The SME Server is a free and open-source software, available for download to anyone thanks to the community and contribs.org. It is widely used by individuals and organizations, both commercial and non-profit, as a primary network server and gateway. As a General Public License (GPL) licensed software, any alterations made to it must come with freely available source code. The GPL is a key factor why free software has gained significant commercial impact. Unlike traditional development that allows proprietary modifications, GPL development ensures that any improvements are included back into the original code base, resulting in explosive technical advances.

Comparing the output difference between traditional development and GPL development, traditional development is like a lightbulb radiating output in many directions, while GPL development is like a laser reflecting coherent output to create a focused and more significant result. The SME Server's primary objective is simple, centralized configuration, along with ease of installation and security.