Software :: Advanced Text List Editing Application?

I was hoping that somebody could recommend a good advanced text list editing application, that I could use to edit a massive text list that I have, in which there is both a leading space and a trailing space at the beginning and end of every item in my text list, which I am trying to get rid of. Normally, I would use Microsoft Word's Find/Replace feature to replace a particular text character with a different character of my choosing, however, if I were to try and use this feature to remove every space in my document, it would also mess things up quite a bit by removing spaces that exist correctly between the words for various items in my text list. How I could go about accomplishing this task?