AutoPatcher is described as 'Offline updater and alternative to Microsoft Update that can be used for installing software patches, service packs and other updates for certain Microsoft Windows systems' and is an app in the os & utilities category. There are four alternatives to AutoPatcher for Windows and Web-based. The best AutoPatcher alternative is WSUS Offline Update, which is both free and Open Source. Other great apps like AutoPatcher are WHDownloader, WuInstall and Microsoft Update Catalog.
Using "WSUS Offline Update" (formerly known as "ct offline update" or "DIY Service Pack"), you can update any computer running Microsoft Windows safely, quickly and without an Internet connection.
WHDownloader, formerly called the Windows Hotfix Downloader, is a lightweight and easy to use downloader used for finding and applying the latest Microsoft Windows updates.
WuInstall is a command line tool that makes it possible to install Windows Updates on demand. This gives you full control over the patching process. You decide what patches should be applied when and on which machine.
The Microsoft Update Catalog is a website that offers updates for computers running Windows 2000 SP3, Windows XP, and Windows Server 2003 and later operating systems.
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The Update Catalog has different Windows versions for files you must get, it has no scripting or auto-download capability like the others.