Kltizing's Utility Wedge by Jim Klitzing - This is a really nice multi-function utility with some great features for BASIC programmers, incuding auto-numbering, re-numbering, multi-line delete and un-new.  A few of the features I like include the mini-word processor, the ability to print hi-res, lo-res (PETSCII), and SEQ files.  There is also a machine language monitor (Micromon) and even a terminal program.  This program really has a little of something for everyone.