AbiWord is a free and open source software word processor. It was originally started by SourceGear Corporation as the first part of a proposed AbiSuite. Development stopped when SourceGear changed their focus to Internet appliances. AbiWord was adopted by some open source developers and AbiWord continued to be developed. The name "AbiWord" (pronounced "Abby Word") is derived from the root of the Spanish word "abierto", meaning "open". It runs on Linux, Microsoft Windows, ReactOS, Solaris, AmigaOS 4.0 (through its Cygnix X11 engine), and other operating systems. However, the Mac OS X port has been stuck in version 2.4 since 2005. AbiWord is part of GNOME Office, a collection of office applications with some degree of integration.

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