WordCounter.net - Count words, sentences, paragraphs etc.
Word Counter - A simple, beautiful word and character counter
Word Count Tools - The must-have free word counter that provides an extensive report about the word count, character count, keyword density, readability & many other useful stats.
Count Wordsworth - Count Wordsworth makes it easy for you to monitor your literature-related metrics online.
Heytools - JavaScript tools, AJAX tools and some fully server side tools.
CharacterCounter.com - CharacterCounter.com is a free-to-use Online Character counter that displays the total number of characters in a text.