SNR (Search-n-Replace) - SNR is a free Windows command-line utility that performs multiple string-replacement operations on a data file in a single pass.
GNU sed - sed (stream editor) is a Unix utility that parses text and implements a programming language which...
Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
Gema - General purpose text macro processor.
Text Workflow - Text Workflow app for Mac
Ruby - A dynamic, interpreted, open source programming language with a focus on simplicity and productivity