LibreOffice Writer has hundreds of extensions [1]. Many are cosmetic, trivial, or specialized. However, a handful are major additions to functionality. In the past, some, such as PDF export, have eventually found their way into Writer's default interface. Eventually, the Angry Reviewer style checker [2] may do just that. Although intended to improve academic articles and grant applications, Angry Reviewer is comprehensive and practical enough to be useful for any type of writing. You might call it a Linux version of the much-advertised Grammarly [3], although its feedback might be presented more usefully.

Angry Reviewer is available on the Angry Reviewer website [4], but the Writer extension has the advantage of allowing you to work offline and run Angry Reviewer without having to cut and paste. Like all extensions, it can be installed with Tools | Extension Manager. When Writer is restarted, Angry Reviewer is added to the top-level menu. When Check This Text is clicked (Figure 1), a second Writer document is opened with feedback. The two documents can then be placed side by side as you evaluate the feedback and make changes.

Figure 1: Angry Reviewer adds a listing to the top-level menu.

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