hunspell VS WeCantSpell.Hunspell

Hunspell seems popular as well. I believe it's the one used by Firefox and LibreOffice, and I think it's the system spell checker in MacOS already? 🤷‍♂️

Almost all browsers use the Hunspell library for spell checking. You should investigate what methods it uses for stemming and suggesting corrections. How does that algorithm work for non-English languages? The main variation you will see between browsers in spelling suggestions is the base dictionary that is used.

I don't think so. Looking at the Chromium source it appears to use Hunspell. This is an okay spell checker, but not AI based AFAIK, only "Morphological analysis, stemming and generation".

Are you familiar with Hunspell? Dictionaries are comprehensive enough to be part of different Office Suites, so I don't see them as constricted to autocorrect.

If you're using Linux or MacOS, you should try hunspell.

i prefer and use hunspell

One can implement Huntspell which is what all browsers use (for example when typing in text areas). Is very simple and is C++.

Note that there are also a few "pragmatic" ports of Hunspell into other languages (in order to use it in environments where C++ dependency is undesireable), namely WeCantSpell.Hunspell in C# and nspell in JS (very incomplete); and aforementioned nuspell can also be considered a "port" (from legacy C++ to a modern one).