theode

Did you ever struggle with more than one language on a WordPress blog? 
In a world of globalization those struggles reach me very often.
This plugin has the ability to store language codes the in post meta data to have articles with different languages on the same page. This might be interesting for blogs who only need sometimes a different language.
One of those is the following case: 
The boss is writing articles in english but its a german company and needs some articles in german too. 
But the second language articles are unique and not only translations.
You maybe think that would be quite simple using WPML. But what are you doing if you need both languages on the start page? 
For this special case, we wrote a plugin, which is able to show all languages on the home page and manipulates the query if some language is chosen. 
It also makes a difference in terms of SEO as it changes the line
<html xmlns=”http://www.w3.org/1999/xhtml” dir=”ltr” lang=”en-EN”>
according to your language.
For a real working experience you can use it in combination with the <a href="https://wordpress.org/extend/plugins/no-function-language-widget/" title="no function language widget" rel="ugc">no function language widget</a>.

Language Field

If you don't need a full multilingual plugin, but have single articles in a different language.

Pieter Bos

This plugin combines comments from all translations of the posts and pages using WPML. Comments are internally still attached to the post or page in the language they were made on. 
Naturally the WPML plugin is required to run.
This is a fixed version of the no longer maintained WPML Comment Merging plugin: 
https://wordpress.or/plugins/wpml-comment-merging/ and https://github.com/JulioPotier/wpml-comments-merging
There are no Settings, it simply does what it says on the label.
This plugin was developed with the assistance of ChatGPT, an AI language model created by <a href="https://www.openai.com/" rel="nofollow ugc">OpenAI</a>.
If you are looking to show comments in all languages on your website with WPML installed, I highly recommend installing the Multilingual Comments WPML plugin.
I support this plugin exclusively through <a href="https://github.com/senlin/multilingual-comments-wpml/issues" rel="nofollow ugc">Github</a>. Therefore, if you have any questions, need help and/or want to make a feature request, please open an issue here. You can also browse through open and closed issues to find what you are looking for and perhaps even help others.
Thanks for your understanding and cooperation.
If you like the Multilingual Comments WPML plugin, please consider leaving a <a href="https://wordpress.org/support/view/plugin-reviews/multilingual-comments-wpml?rate=5#postform" rel="ugc">review</a>. Thanks!
Multilingual Comments WPML by <a href="https://so-wp.com/plugin/multilingual-comments-wpml" rel="nofollow ugc">Pieter Bos</a>.

Multilingual Comments WPML

This plugin combines comments from all translations of the posts and pages using WPML.

Language Field vs Multilingual Comments WPML