What free antiviruses and firewalls are available for non-profit organizations?

Question

Windows

There is a small non-profit organization (HOA of a residential building).
It is necessary to choose an antivirus solution (antivirus + firewall) that will be free for use in this organization.
I know that there are many free solutions for home use, but I did not find a transparent answer if they can be used by a non-profit legal entity.
When posting options, please provide a link to the lines in the licenses that confirm your words. Legal clarity is extremely important.

Answer 1

Built-in Windows Defender and Firewall.

Answer 2

The regular firewall is very good - it makes no sense to install some other one in most situations known to me - it will not be better.
If you need better - put a separate iron.
As for the antivirus - again, the regular antivirus is included, does not ask for money, effectively handles most threats, and does not slow down the system. In most cases, it makes no sense to put another one.
If there is not enough built-in, another one will not help either. There it is no longer necessary to have an antivirus, but to provide comprehensive security - setting up rights, networks.

Answer 3

What free antiviruses and firewalls are available for non-profit organizations?

The organization's lack of profit in the context of software licensing does not change anything; for the vast majority of developers, any organization is a commercial user.
So look for "freeware for commercial use" right away, for example, there is a good selection of the same name on the rubord.

spoiler

Вот что там про бесплатные антивирусы и файерволлы:
Comodo Internet Security
FortiClient Endpoint Security Suite
Microsoft Security Essentials
Privatefirewall

Answer 4

Comodo Internet Security Free
free incl. for business users

Is it also free for business users?
Yes. However, businesses that want to secure large networks will benefit greatly from choosing Comodo Endpoint Security Manager (CESM)

a little crooked interface (but this is almost everyone on the market), but overall a pretty sane program.
https://ru.comodo.com/software/internet_security/f...