Vowels away
This program show the words that can be generated from another word if you
don't care about the vowels.
Here is a collection of some vowels aways in english
and swedish
By the way, the longest vowels away words I found in english is - of course - ntdsstblshmntrnsm (antidisestablishmentarianism) with 17 characters with strghtfrwrdnss (14 characters) as second.
Also see Consonants Away
Yet another
useless program from hakank.