Text Mechanic is described as 'A suite of simple, single task, browser based, text manipulation tools'. There are more than 10 alternatives to Text Mechanic for a variety of platforms, including Online / Web-based, Windows, Google Chrome, Mac and Firefox. The best alternative is NimbleText, which is free. Other great apps like Text Mechanic are TextPipe (Paid), WordCounter.net (Free), Kreative Recode (Free) and Word Count Tools (Free).
One tool - One point of maintenance. With TextPipe you specify all your text processing functions in one place, rather than remembering and managing multiple manual jobs across various text editors, command line tools, custom scripts and Word and Excel macros.
This word counter & character counter tool is the web version of the popular Firefox add-on and Chrome extension that provide an extensive report about the number of words, characters, sentences... Everything is done instantaneously at the client side only.