Online Armor Personal Firewall is a firewall originally developed by the Australian company Tall Emu, until the program was sold to Emsi Software GmbH (now Emsisoft Ltd  ). The program provides protection on the Microsoft Windows operating system from both inbound and outbound attacks. There are three editions of this product: 
- Online Armor Free is freeware and has a limited featureset.
- Online Armor Premium is a comprehensive commercial firewall that includes anti-phishing and anti-spam capabilities.
In an independent proactive security challenge  performed by matousec.com,  Online Armor Premium received a score of 99%, surpassing more well-known firewalls, such as ZoneAlarm and Kaspersky Internet Security . A well known vulnerability profiling site and company, Secunia , 2008 in the software,  though Matousec reported a weakness 25 March 2008  that has been repaired in the latest version.
Online Armor has acquired both negative and positive feedback with some users reporting serious compatibility problems with certain programs, such as F-Secure and Ad Muncher, as noted in the product website to problems. 
End of Support
On March 31, 2015 Emsisoft Ltd announced that they had discontinued selling new licenses for Online Armor, which it would only be possible to activate on May 31, 2015, and that support for Online Armor would officially end after March 31, 2016. 
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- ^ Jump up to:a b “Download Online Armor and Online Armor ++ – Free Trial gold” .
- Jump up^ “Computer Protection Software, made in: the world” . Official Emsisoft Blog . Emsisoft Ltd.
- Jump up^ “Firewall Software Range – Online Armor” . Tall Emu Pty Ltd . Retrieved 12 November 2009 .
- Jump up^ “Matousec Proactive Security Challenge” . Matousec.com . Retrieved 2010-01-29 .
- Jump up^ “Matousec About Us -page” . Matousec.com . Retrieved 2009-08-01 .
- Jump up^ “Online Armor 2.x at” . Secunia.com . Retrieved 2009-08-01 .
- Jump up^ “Firewall challenge introduction, Latest news” . Matousec.com . Retrieved 2009-08-01 .
- Jump up^ “Fileforum User Reviews of product” . Fileforum.betanews.com . Retrieved 2009-08-01 .
- Jump up^ “Emsisoft Online Armor support roadmap” . Official Emsisoft Blog . Emsisoft Ltd.