Before the rise of Anti-spyware, anti-trojans were generally considered the second line of defense after anti-virus. They justified themselves with quality memory scanners, better cleaning abilities and greater focus on none-spreading malware like trojans. Despite this, even at their heyday, there were never very popular and only a handful anti-trojans exist. Just like antispyware, the freeware versions are generally on demand scanners only.
Today, the focus is on antispyware. Besides the line between antispyware and antitrojan is very thin anyway. BoClean (classified as a anti-trojan) has always handled malware that we call spyware. Ewido has gone through many name changes, starting off as an anti-trojan, before changing the name to anti-malware , currently it goes by AVG Antispyware.
You can probably just go with BoClean for real-time protection if you see the need.
Resident scanner Edit
- Comodo BoClean - http://www.comodo.com/boclean/boclean.html
BoClean's selling point is its memory scanner. Currently (June 2007), it has just being bought by Comodo and has become freeware.
On demand scanners Edit
- a-squared Free - http://www.emsisoft.com/en/software/
- Ewido (now AVG Anti-Spyware) - http://www.ewido.net/en/ - Ewido Micro Scanner
- Nemesis - http://www.usec.at/
Extroyan - http://www.troyan.tk/- No longer free
SwatIt Anti Trojan and Bot Scanner and Remover http://swatit.org/Outdated?
- See Lists of freeware antispyware and Lists of freeware antivirus
Online Scanners Edit
This section is no longer updated, For updated list see Online Malware Scanners
- A2 squared web scanner http://www.emsisoft.com/en/software/ax/
- Windows Security scanner http://www.windowsecurity.com/trojanscan/
- For more online scanners see also List of freeware online antispyware scans and List of freeware online antivirus scans
Information Sources Edit
- Illusive security - http://scheinsicherheit.pytalhost.de/introduction.htm
Freeware Anti-Viruses | Freeware Anti-Spyware | Freeware Anti-Trojans | Freeware Anti-Keyloggers | Freeware Anti-Rootkits | Freeware Firewalls | Freeware Behavior blockers | Freeware Sandboxes | Freeware Virtualization | Freeware Security analysis tools | Freeware Hardening tools | Freeware Blocklists | Freeware security services (excluding virus scanners) | Freeware Anti-Phishing | List of portable tools | List of unclassified tools
Related : Lists of online scanners