Spoler or Spooler: How To spell?
The word Spoler is misspelled against Spooler, a noun meaning "One who, or that which, spools."
Spooler has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings sp & ler which should not be misspelled with single 'O'
Wrong Spelling:  sp-o-ler  Correct Spelling:  sp-oo-ler 
Find more incorrect spellings of Spooler to spell right way.