Sitecore Experience Platform 8.1 Update-3
Download Sitecore Experience Platform 8.1 rev. 160519 (8.1 Update-3).
Sitecore Experience Platform 8.1 Update-2
Download Sitecore Experience Platform 8.1 rev. 160302 (8.1 Update-2).
Sitecore Experience Platform 8.1 Update-1
Download Sitecore Experience Platform 8.1 rev. 151207 (8.1 Update-1).
Sitecore Experience Platform 8.1 Initial Release
Download Sitecore Experience Platform 8.1 rev. 151003 (8.1 Initial Release).