The longest word is an application that allows you to get the letters you have entered the longest possible word. It is popular for solving puzzle games on the show Music puzzle that has for years shown on the RTS.

To find the longest words enter the letters and a comma (,) to separate (eg z, e, k, a), 15 letters maximum, use Latin characters (č, š, ć, đ, lj, nj, f, J. )

If you want to first of all have fun then this is the app for you.