I have used ZoneAlarm Internet Security Suite for years (retail version) and no problems.
It offers antivirus, firewall, antimalware, antispyware, etc., etc.
ZoneAlarm uses their own firewall, as they were the first firewall software company (I believe).
But, they use Kaspersky's antivirus software.
All the other included software in the Suite is produced by outside companies.
I have used SOPHOS Business Suite also.
I tried BitDefender (retail) and it was good.
I used COMODO Internet Security Premium (free) for many years on numerous computers without any problems.
I currently use COMODO Internet Security Pro, and have had no problems.
I also use Malwarebytes Antimalware Pro (retail) and SUPERAntiSpyware Pro (retail) without any problems.
Find one that works for you.
"Common sense is not so common." - Voltaire