TextBroom for Mac

From blueline:

TextBroom is an utility that handles nightmarish text files. Suppose you got a list containing 2,796 lines of e-mail addresses and you suspect it to contain duplicate entries. TextBroom lets you remove all duplicate lines easily with just one click.

Or perhaps you just saved a spreadsheet from within Excel "As plain text"; the resulting document now contains no less than ten thousand tabs; 10, 12, 17, 31, etc. tabulators in a row. Before you despair, let TextBroom replace the superfluous tabs with just a single one or with the character you specify.