ls or find option to exclude binary files

How can I list only files that aren't compiled code in the current directory?

I'm reviewing the custom scripts and code on several HPUX and Linux servers before transferring them to a newer system. I get tired of seeing PuTTYPuTTYPuTTYPuTTYPuTTY when I encounter a file that is compiled.

I would like to sort them so that I can skip over the compiled software and come back to them at a later time.