WSUS Offline Update is a way to download Microsoft updates without having to use Windows Update itself. It is a free and open source offline updating application.
Here are some screenshots to illustrate the features and user interface of this application:
Create offline update scripts for your operating system. Screenshot of WSUS Offline Update - 1754px · 1261pxGrabs updates for various Windows components. Screenshot of WSUS Offline Update - 1754px · 1261pxAn update method suitable for offline systems only. Screenshot of WSUS Offline Update - 1255px · 909px