visualizer vs visualiser

visualizer and visualiser both are nouns.

Word	Noun	Adjective	Verb	Adverb
visualizer	Yes	No	No	No
visualiser	Yes	No	No	No

As nouns, visualizer and visualiser are synonyms defined as:

visualizer and visualiser: one whose prevailing mental imagery is visual

visualizer (noun)	visualiser (noun)
one whose prevailing mental imagery is visual	one whose prevailing mental imagery is visual