Voici une liste des outils de désinstallation des principaux logiciels antivirus

Avast:
http://files.avast.com/files/eng/aswclear.exe

Avira:
http://dlpro.antivir.com/package/removaltool/win32/en/removaltool-win32-en.exe

AVG:
http://www.avg.com/download-tools

BitDefender:
http://kb.bitdefender.com/KB333-en--How-to-uninstall-BitDefender.html

CA:
http://homeofficekb.ca.com/CIDocument.asp?KDId=3125&Preview=0&Return=0&GUID=DF325E0AA0AB4264AF47E4BEA49F571B

F-Secure:
http://support.f-secure.com/enu/corporate/downloads/removeav.shtml

Kaspersky:
http://usa.kaspersky.com/support/home/208279752

McAfee:
http://download.mcafee.com/products/licensed/cust_support_patches/MCPR.exe

Panda:
http://www.pandasecurity.com/resources/sop/UNINSTALLER_08.exe

Symantec (Norton):
http://www.symantec.com/norton/support/kb/web_view.jsp?wv_type=public_web&docurl=20080710133834EN&selected_nav=partner

Trend Micro:
http://esupport.trendmicro.com/support/viewxml.do?ContentID=EN-1037161

Webroot:
http://support.webroot.com/cgi-bin/webroot.cfg/php/enduser/std_adp.php?p_faqid=1761

Zone Alarm:
http://server.iad.liveperson.net/hc/s-28464961/cmd/kbresource/kb-7016203058973811903