Maybe something like this

You might want to quit using software produced by big software corporations, namely software from Microsoft, Apple, etc. But why? If we don't usually avoid useful tools and software, why would we make the exception with software produced by big tech-corporations?

The short answer is that they are not ethical, and they do not respect your freedom.

Software is made from the source code, written by programmers, in code that's understandable by us, humans. For it to run on our devices, the code needs to be then translated in to a language understandable by machines. When big corporations release software, they often only release the code that's understandable by machines, while keeping the human version to themselves, making their software be able to run on your device while being not modifiable.

With this restriction, we, the users, do NOT know what is inside of the software, meaning that the software is always possible malware. This situation is ESPECIALLY BAD with BIG corporations, as they often have the resources to surveil and spy on us. Also, many software released with this restriction have paywalls, making certain features only accessible when paid, further disrespecting freedom.

Software with this restriction are "Non-free" or "Proprietary" software.

We dedicate this site to encourage and promote software without the restriction. They are called "Free" software or "Open-source". We call it "FLOSS" ("Free/Libre Open source software")

To reclaim your rights as a computer/mobile user, please use and support FLOSS!

EDIT: This might be too long to be put on the home page, and now that I look at the home page (I mistaken-ed it with another page) it actually already explains the purpose pretty well. Maybe the above text can be put somewhere else in the website.