[Chouette]

BitDefender and AVG as AV.
I'm also using an Anti-Rootkit too if my AV doesn't detect.

[Conch]

Depends on what Operating System I'm using, if I happen to NEED M$ Windows, which I rarely do
It's a mixture of Premium Malware-Bytes for Web Sec & Rootkits.
Avast Premium for AV + Firewall.
And 'Advanced System Optimizer' to clean all the rubbish out of the Registry + Got CCleaner Premium too.
--
On *NiX based distributions, No AV - Just IDS and Hardcore IPTable Rules!

[mothered]

Avast Premium for AV

I find Avast to be a very good form of protection.

It's very light on system resources and It's detection rate Is Impressive. I use Avast on a few systems, whilst on my hacking labs, I don't have any AVs Installed. Too many false positive detections hinder my daily computational tasks.

[Boudica]

Currently Malwarebytes.. Will probably look into really sorting my anti-virus once I've moved. Too many things to pay for... I feel awful but this drops on my priorities list.

[Golem]

I use MalwareBytes and HitManPro, which I guess most people here probably use the first one. But HitManPro is also a pretty good Anti-Virus to be using.

[Fimblewinter]

I use MalwareBytes and ESET with a currently outdated database.

[oryx]

My laptop has clamavg installed. This same laptop runs everything through firejail (SUID bit based sandbox), has hidepid installed (hides processes from users that don't own them). I would have the grsec kernel installed, but I had to resort to using the LTS version of the Linux kernel, since my laptop hardware is iffy.
I have cron jobs that run to check for any rootkit presences, and I have a statically compiled binary in my home directory that will remove any userland rootkits.
I hardened my openssh service for the biggest part, and have limited login attempts for users on my system before user lockout.
I do have a firewall running and an IDS system in place, but can't remember the names of either.
Additionally, I really grudge not running the grsec kernel, since that means I can be fucked a little more smoothly by any kernel based malware.
There's more hardening I have in place on my system, but I hardened this box a long time ago, so my old man dementia is kicking in.

My computer for all of my vidya just uses Avast lol. I see no need to try protect it, it has virtually no importance to me.

[Retality]

I use Kaspersky Pro version too. I could provide a leak for the codes once I have a clear look at the rules on here.

[548363742]

Nothing for now, i used kaspersky last month and it's freezing my laptop.

[Wildfire]

Still using absolutely nothing as of 08/08/2016.