Well, Avast say they will continue to support XP users for the next 3 years:
avast! blog » Windows XP users sticking to the OS despite support cutoff
I also checked AVG, and they say:
5529 AVG support for Windows XP
avast! blog » Windows XP users sticking to the OS despite support cutoff
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As AVAST users they are protecting themselves since we will continue to support Windows XP users for at least the next three years. This number is relatively high considering the security risks involved with the OS and makes one wonder how many XP users are not concerned about their protection and aren’t planning on upgrading their OS, buying a new PC or seeking AV that will support them. AVAST has been creating protection modules and detections specifically designed to cover Windows XP vulnerabilities and other security problems. We recommend non-AVAST Windows XP users download AVAST for the added protection. avast! 2014 is a light product, both in terms of speed and resource consumption, tailored for older PCs running XP. In addition to this, we recommend users stop using Internet Explorer, as the browser poses an even larger threat when used on Windows XP. The latest version of Internet Explorer for Windows XP is 8, which is outdated and lacks many security improvements available in later versions of the browser. We recommend XP users switch to a safer browser that updates itself, like Google Chrome.
I also checked AVG, and they say:
5529 AVG support for Windows XP
Quote
AVG software will continue to work and receive new program versions and antivirus updates.
To keep your computer safe, we recommend to upgrade your Windows to a newer version (Windows 7 or. To prevent web-based attacks aimed at outdated versions of Internet Explorer, you can increase your on-line safety by installing an alternative Internet browser, such as Google Chrome or Mozilla Firefox.



. To prevent web-based attacks aimed at outdated versions of Internet Explorer, you can increase your on-line safety by installing an alternative Internet browser, such as Google Chrome or Mozilla Firefox.



















) and old DOS games and utilities have a very good chance of running just fine with DOSBox.