Yes, PT AO90 is free to use. It is available as a free plugin on WordPress.org.

How many websites use PT AO90?

PT AO90 has 50 active installations as tracked by WordPress.org.

What are the best PT AO90 alternatives?

Popular alternatives to PT AO90 include PT Variants, Convert PT AO90 for GlotPress. You can compare them side-by-side on our comparison pages.

Does PT AO90 work with the latest WordPress?

PT AO90 has been tested up to WordPress 6.9.4. It requires WordPress 5.8+ and PHP 7.2+.

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PT AO90

Name: PT AO90
Rating: 5 (1 reviews)
Author: Marco Almeida | Webdados

Sets WordPress language to Portuguese (AO90), according to the orthographic reform of 1990, and adds fallbacks to the pre-AO90 orthography.

By Marco Almeida | Webdados·AO90·Free

5(1 reviews)

·50 active installs·Updated 9 months ago

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As of April 2026, PT AO90 is a WordPress AO90 plugin with 50 active installations and a 5/5 rating from 1 reviews. It has been downloaded 3.1K+ times in total. Requires WordPress 5.8+ and PHP 7.2+. Available on WordPress.org since 2017. Top alternative: PT Variants.

5/51 reviews

50active installs

3.1K+total downloads

9 yearssince 2017

Overview

The PT AO90 plugin sets WordPress language to Portuguese (AO90), according to the orthographic reform of 1990, and adds fallbacks to the pre-AO90 orthography, the default language pack for Portugal (the 1945 norm, reviewed in 1973), when AO90 translation is not available.

You don’t need this plugin to set the Portuguese (AO90) language, you can set it in WordPress options. But this enables fallbacks to the default Portuguese (pre-AO90) language packs, instead of WordPress defaults (en_US). WordPress does not currently supports language fallbacks, so using this plugin is the only way to have non-AO90 translated projects (plugins and themes) in Portuguese (pre-AO90) instead of English.