Consonants away
This program shows the words that can be generated from another word if you
don't care about the consonants. Example: the word 'wittgenstein' has the same vowel combination (and in the same order) as 'intercepting', 'interesting', and 'sightseeing'. Swedish example: 'kjellerstrand' has the same vowels as 'belevad', 'cerebral', and 'efternamn'.
This program was announced in the (swedish) blog post Consonants Away, which may contain some more comments about the program.
Also see Vowels Away
Yet another
useless program from hakank.