GNU sed - sed (stream editor) is a Unix utility that parses text and implements a programming language which...
Heytools - JavaScript tools, AJAX tools and some fully server side tools.
TXR - Pragmatic, convenient data munging language.
WordCounter.net - Count words, sentences, paragraphs etc.
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.
NimbleText - NimbleText is a text manipulation and code generation tool available online or as a free download.