AbiWord (//) is a free and open-source software word processor. It was originally written in C++ but since version 3 it is based on GTK+ 3. The name "AbiWord" is derived from the root of the Spanish word "abierto", meaning "open".
AbiWord was originally started by SourceGear Corporation as the first part of a proposed AbiSuite but was adopted by open source developers after SourceGear changed its business focus and ceased development. It now runs on Linux, Microsoft Windows (Last 2.8.6, 2.9.4 beta ), ReactOS, Solaris, AmigaOS 4.0 (through its Cygnix X11 engine), MeeGo (on the Nokia N9 smartphone), Maemo (on the Nokia N810) QNX and other operating systems.
AbiWord supports both basic word processing features such as lists, indents and character formats, and more sophisticated features including tables, styles, page headers and footers, footnotes, templates, multiple views, page columns, spell checking, and grammar checking. Starting with version 2.8.0, AbiWord includes a collaboration plugin that allows integration with AbiCollab.net, a Web-based service that permits multiple users to work on the same document in real time, in full synchronization. The Presentation view of AbiWord, which permits easy display of presentations created in AbiWord on "screen-sized" pages, is another feature not often found in word processors.
AbiWord generally works similarly to classic versions (pre-Office 2007) of Microsoft Word, as direct ease of migration was a high priority early goal. While many interface similarities remain, cloning the Word interface is no longer a top priority. The interface is intended to follow user interface guidelines for each respective platform.
AbiWord comes with several import and export filters providing a partial support for such formats as HTML, Microsoft Word (.doc), Office Open XML (.docx), OpenDocument Text (.odt), Rich Text Format (.rtf), and text documents (.txt). LaTeX is supported for export only. Plug-in filters are available to deal with many other formats, notably WordPerfect documents. The native file format, .abw, uses XML, so as to mitigate vendor lock-in concerns with respect to interoperability and digital archiving.
The AbiWord project includes a US English-only grammar checking plugin using Link Grammar. AbiWord had grammar checking before any other open source word processor, although a grammar checker was later added to OpenOffice.org. Link Grammar is both a theory of syntax and an open source parser which is now[when?] developed by the AbiWord project.
The recently released AbiWord-2.4...is the first Free Word Processor to offer an integrated Grammar Checker
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