CHM2Wordlist is an easy to use words extraction tool that enables the user to extract a word list from CHM documents. Words are extracted from CHM document and sorted alphabetically. There are at least three cases that CHM2Wordlist will be used in: Very fast spell check for large CHM documents. Comparing the headache when spell checking hundreds or thousands of pages with the happiness when only need to spell check several word list pages. Another benefit from CHM2Wordlist is that you can easily find words inconsistency or invalid usage even the words passed spell checking, such as ?attended? and ?attendee?,? differentiae? and ?differential?, etc. The word list generated can be used as the draft glossary for the document, saving much time. When translating the document into another language, especially for those technical documents, a word list with both languages is very helpful for keeping translators` work consistently. The word list generated by CHM2Wordlist can be used as the draft list for this purpose, saving much time.