CountOfWords.com - CountOfWords.com is a handy tool that detects the number of words in a given text and tells you the total amount.
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.
NimbleText - NimbleText is a text manipulation and code generation tool available online or as a free download.