RemoveWAT is an old free program used for activating Windows 7 and higher, developed by Hazar. It is actually a variation of the Windows Loader (Windows 7 Activator), and was originally designed for one-click activation of Windows 7. Now, it has fully supported the activation of all versions of Windows 7, Windows 8, Windows 8.1, Windows 10 and some Server versions.

R@1n ReBirth Activator is an intelligent Microsoft product activation tool, developed by R@1n from Nsane Forums. It is actually the successor of R@1n Act1vat0r, the former is a command line interface, the latter is a GUI, and can be regarded as an upgraded version of Re-Loader Activator. It is mainly used to activate Microsoft Windows, Windows Server, Office and Visual Studio.

KMSOffline is a new KMS based universal offline activator made by Ratiborus from Russia. It supports three main activation methods: KMS activation, HWID activation and KMS38 activation, so as to meet the needs from different users. In addition, it fully supports all the major editions/versions of Microsoft's Windows, Server and Office software products. The actual tests showed that the activation effect of KMSOffline is very good!

AAct (full name: AAct Portable) is a tiny and efficient KMS-service (Key Management Service) based Windows & Office universal activator made by Ratiborus from Russia.

Windows 10 ALL version activator (AKA: Windows 10 All Editions Activator) is a brand-new Windows 10 permanent activation tool made by MrSzzS. It's able to quickly activate/deactivate all editions/versions of Windows 10 with one click. It's very easy to use, and user just needs to enter the corresponding number and press Enter.