Spell checker

ispell

aspell

Spell checking:

$ aspell --lang=russian --encoding=cp1251 check FILE

List of dictionaries:

$ aspell dump dicts

See:

http://aspell.net

Home page.

hunspell

GPL/LGPL/MPL tri-license, support 8-bit and unicode dictionaries.

http://hunspell.github.io/

Home page.

http://en.wikipedia.org/wiki/Hunspell

Wikipedia page.

http://mozilla-russia.org/projects/dictionary/hunspell.html

Documentation in Russian.

native

Microsoft:

http://www.microsoft.com/language/en/us/download.mspx

download page

http://www.microsoft.com/language/en/us/feedback.mspx

feedback to Microsoft

http://www.microsoft.com/language/en/us/search.mspx

search for term usage

Ukrainian:

http://dki.gov.ua/article/show/alias/Okl

Офіційні класифікатори

Emacs

C-x ispell
C-x ispell-change-dictionary russian <RET>