A government is like fire, a handy servant, but a dangerous master

Government comes in many forms but at its core government is a monopoly on the invitation of force. Governments are instituted to use force to compell action or inaction. The laws of a government can be democratic or dictorial but in either case the laws are backed by this threat of force

Evil is a subjective value. So for a government to be evil you would need to agree with the statement "it is unethical to initiate the use of force"

Of you believe it is unethical to initiate force then one would alose believe government is evil or unethical

Government is a tool and not perfect,this is why I think you can see western democracies which are bound to be mediocre but can actually adjust over time and most of the issues can be blamed on the population as a whole as they still hold voting power, whereas you also have evil government such as the Chinese government that openly has concentration camps and tortures millions in them but the populace at large (in China) seems to be okay with it and couldn't really do anything about it anyway, as they are controlled completely by less than 1% of the population and short of a civil war can't really do anything about it.

This can be a theoretical argumentation, but I'd still think it is crazy. I'd love have an open source being used to improve the lives of other citizens.

Indeed, but why do you assume that would require or even involve government?