Spell check for online editor

I recently bought a ASP/Classic RTE Editor. It works fine has a lot of tools and some features I need, but unfortunately does not have a spell check.
I bought a stand alone spell check but it doesn't work well with the editor I have. When I close it the text in the editor is deleted :(  ... I asked for support with the Spell check but the company does not reply to my emails, so I am back to sq. zero on the spell check.

Considering I am using ASP Classic / Bootstrap and this editor. What are my options for a spell check program that I can test with my editor ?

Alternatively. I could use another editor like the one being used here that seems to have spell check as I type.
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I read to 3rd word of your request.
Return it to place of purchase for refund if legally permissible.
AleksAuthor Commented:
They said that it comes with a .net spellchecker which makes no sense since it is for classic ASP. and they don't support any external spellcheckers ... So Ill be looking for another editor.  

Something I can use with Bootstrap and has a spellchecker. Any recommendations ?
jquery spellchecker ?
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AleksAuthor Commented:
Sure and jquery editor maybe ...
Web server does not care much about what happens in browser.... Final result is HTTP post of text anyway.
AleksAuthor Commented:
No recommendations?
Does anyone know which editor is used on EE?
Big MontyWeb Ninja at largeCommented:
gheist - what was wrong with the 3rd word? :P

to answer your question, check out https://cutesoft.net/asp/netSpell.asp, it seems to have everything you're looking for

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