Polylang 
With over 700,000 installs, Polylang is the most popular multilingual plugin available on the WordPress repository. You can take advantage of all its cool features for free. If you need more advanced features or access to Premium support, you might prefer buying Polylang Pro instead.
Check all the advantages of Polylang Pro in the table below:
| Polylang | Polylang Pro | |
|---|---|---|
| FREE | 99.00€ | |
| Translate posts, pages, media, categories, tags | ||
| Translate Custom post types and custom taxonomies | ||
| Translate menus and widgets | ||
| Use subdirectories, subdomains or separate domains | ||
| WPML API compatibility | ||
| DeepL integration | ||
| XLIFF Import/Export | ||
| Translations can share the same slug in the URL | ||
| Translate slugs in URLS (custom post types, taxonomies and more...) | ||
| Duplicate posts across languages | ||
| Enable or disable languages | ||
| REST API Support | ||
| Additional integration with ACF Pro | ||
| Block Editor support | ||
| Site Editing support | ||
| Premium support |