More-Lang (more-lang) free WordPress plugin

More-Lang has some excellent features:

• Clean design. More-Lang saves each localized post text as a custom field, this brings some benefits: it will not leave any trace on the UI after deactivation; it can minimize the DB space usage.
• More-Lang works in such a way: it treats the configured languages as a default language plus any number of extra lanuages, the default language works in the default way of WordPress, More-Lang handles the extra languages. That’s why it is named More-Lang.
• Simple & easy to use admin UI.
• In-place language switchers & editors on the admin panels.
• There are built-in editors for: posts, taxonomy terms, menus, widgets, medias, general settings.
• RTL languages support.
• Hreflang tags generation for multilingual SEO.

Known Issues

• Autosave is not supported for the WordPress releases before 4.6 or after 5.0.
• Array values(same meta_key for multiple metas in a post) are not supported for the Custom Fields.
  Array values in the Custom Fields are seldom used, if you do need this, try another approach: save Array values in a field, delimited by special characters.