KMS Activator Ultimate (full name: Windows KMS Activator Ultimate, WKAU for short) is an easy-to-use and safe-to-use (without any type of virus and no harmful effects to any system files) activator for Microsoft Windows Vista, 7, 8, 8.1 ,10 and Office 365/2010/2013/2016. Compared with similar tools, it’s a big file size.
KMS VL ALL (AKA: KMS_VL_ALL) is a tiny and fast KMS-based offline activator released by the famous MDL forum (My Digital Life Forums). It came up with mini file size (50- kb) and ultra high success rate. But there is just one drawback – it only supports for all editions/versions of Microsoft Windows (Server) & Office products with Volume License (i.e. the VOL edition).