This works alongside the real Wordle, not instead of it: click Suggest a word to have a good next guess filled in, go type that word into Wordle, then come back and click each tile to mark the color Wordle actually gave it (gray → yellow → green). Click Filter word list and every five-letter word from WORD.LST still consistent with everything you've marked so far is listed below -- including a suggestion for the next row.
Gray = letter's not in the word (or not more than what's already green/yellow elsewhere in that row) · Yellow = in the word, wrong spot · Green = correct spot.