Microsoft Plus! is a discontinued commercial operating system improvement product by Microsoft. The last edition is the Plus! SuperPack, which includes a variety of screensavers, themes, and games, as well as multimedia applications. The Microsoft Plus! product was first announced on January 31, 1994 under the internal codename "Frosting". The first version was an upgrade for Windows 95, Windows 95 Plus!

The features that make up Microsoft Plus! were generally developed by Microsoft itself. The Plus! packs also included games and software from third-party companies; for example, in Plus! for Windows XP, the HyperBowl game developed by Hyper Entertainment Inc. was included. Plus! features that enhance the base operating system or provide utility are generally included free of charge in the next release of Windows.

Microsoft Plus! was discontinued in favor of Windows Ultimate Extras in Windows Vista.^{[1] [2]}

• Official Microsoft Plus! Website. at the Wayback Machine (archived May 3, 2007)
• Download link for Microsoft Plus! for Kids!^{[permanent dead link]}, Windows 95
• Microsoft Plus! for Modern Windows Archived 2009-04-16 at the Wayback Machine (Windows 98+)