Avira is a German antivirus software company. Its antivirus applications are based on the AntiVir antivirus engine, first launched in 1988. It was called "H+BEDV Datentechnik GmbH" when it was founded. One of the antivirus software, AntiVir Personal, is free for personal usage.
Download：
Avira AntiVir Personal - FREE Antivirus（C Version）：
Date: 2009-08-03, Version: 9.0.0.407
http://dlce.antivir.com/package/wks_avira/win32/en/pecl/avira_antivir_personal_en.exe
Md5: d80f923d6416629c3a882e40ee387dce
Avira AntiVir Premium for Windows 2000, XP, XP 64 Bit, Vista 32 Bit and 64 Bit（P Version)：
Date: 2009-08-03, Version: 9.0.0.446
http://dlpe.antivir.com/package/wks_avira/win32/en/pepr/avira_antivir_premium_en.exe
Md5: 8f9e3ae1a7ad4cce4a7b6911ab3c6880
Avira Premium Security Suite for Windows 2000, XP, XP 64 Bit, Vista 32 Bit and 64 Bit：
Date: 2009-08-03, Version: 9.0.0.381
http://dlpe.antivir.com/package/wks_avira/win32/en/isec/avira_premium_security_suite_en.exe
Md5: 8e1c150f5c31d26114ccd63e44db3cbf
Avira AntiVir Professional Windows XP, XP 64 Bit, 2000, Vista 32 Bit and 64 Bit：
Date: 03.08.2009 - Version: 9.0.0.730
http://dl1.pro.antivir.de/package/wks_avira/win32/en/prof/avira_antivir_professional_en.exe
Updates：http://dl.antivir.de/down/vdf/ivdf_fusebundle_nt_en.zip
Registry Cleaner：http://dl.antivir.de/down/windows/registrycleaner_en.zip
KEY：
C Version:(Free Edition)
KEY：http://dl1.avgate.net/down/windows/hbedv.key
http://dlce.antivir.com/down/windows/hbedv.key
P Version (Personal Edition）
30 days：https://license.avira.com/en/promotion-t0q1aatr05zwftftgnqr
30 days：https://license.avira.com/en/promotion-6788wuyfuyluz7c2sa7z
90 days：https://license.avira.com/en/promotion-6dl7vtc3unbw2mzefr1b
S Version (Security Suit)
92 days：https://license.avira.com/en/promotion-cj0ptfb6eh8cmw6a101r
92 days：https://license.avira.com/en/promotion-0vplf6s3gy16a8zc3s0d
92 days：https://license.avira.com/en/promotion-hylm9fbv7chaxs8zbl83?id=JVgkM1BNUn
Server、Professional Version
30 days trail KEY：http://www.avira.de/en/products/test_licence.html
Differences：
C version：Avira AntiVir Personal - Free Antivirus
P Version ：Avira AntiVir Premium
S Version：Avira Premium Security Suite
S Version：Avira AntiVir Server
Pro Version：Avira AntiVir Professional
Mobile Version：Avira AntiVir Mobile
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