In Nov-2022, Webflow announced plans to add multilingual support. Currently we have the ability to set a site-wide language code only.
I'm going to divide multilingual support into 5 levels;
As of Nov-2022, Webflow is barely over level 1 on that scale. You can create multilingual pages, and you can create a navigator to switch between them. The only way to create a "mostly complete" multilingual site properly would be to host a separate Webflow site for each translation, e.g. mysite.com, de.mysite.com, es.mysite.com, and to do a lot of linking work.
Then you can set the language code for each translated site, site-wide.
Multilanguage options for Webflow 2023 - Solid article, on Polyflow's site
It's not known when full multilingual support will become available, so in the meantime, we have these options;
The most widely established solution so far, and historically, it appears to be favored by Webflow users. However it has some known SEO issues with hreflang links.
Newly announced? Nice integration with the Webflow designer, seems to be designed specifically for Webflow.
Forum announcement 25-Nov-2022.
I believe the polyflow site itself is based on Webflow + Polyflow
Note;
Suitable for very small sites, and simple translation needs.