Google is now offering its Quickoffice program for free on Android and iOS. Quickoffice is part of the Google Drive suite of apps, and lets you edit Microsoft Word documents on your mobile or tablet.
This will undoubtedly annoy Microsoft, seeing as one of the biggest selling points of its Surface tablet is the fact you can use it to edit Word documents.
The Surface has been struggling as well. Microsoft recently admitted it'd lost $900 million on the tablet, and that it'd made "way too many" of the device.
Microsoft has hinted it'll launch Office for Android and iOS, but so far nothing has materialised.
The Redmond company is going through a transition period right now. CEO Steve Ballmer announced he'll step down within the next year, so it's currently on the hunt for a replacement.
The company is also acquiring Nokia's mobile division, with the deal expected to be complete early next year.
Microsoft's Windows Phone 8 operating system has had good reviews, but it's struggled in the face of competition from Google's Android and Apple's iOS.
Acquiring Nokia should help bolster Microsoft's hardware offering, and make sure its devices are more in-tune with the operating system.
Nokia is expected to announce the Lumia 1520 Bandit very soon. It's thought to be the company's first 6-inch device, and its last flagship before it's taken over by Microsoft.