GNU M4 - GNU M4 is an implementation of the m4 macro preprocessor.
WordCounter.net - Count words, sentences, paragraphs etc.
XMLStarlet - XMLStarlet Command Line XML Toolkit
WordCounter.online - WordCounter.online is a useful tool that enables you to determine the word and characters (with and without spaces) and reading time, phrases, and paragraphs in your text at absolutely no cost.
xmllint - command line XML tool
WordCounter.Tools - Word Counter: tool check word count and correct writing mistakes by pasting your text into our free online word counter.