WordCounter.net - Count words, sentences, paragraphs etc.
Word Counter - A simple, beautiful word and character counter
WordCounter.Tools - Word Counter: tool check word count and correct writing mistakes by pasting your text into our free online word counter.
Wordcounter for Google Docs - A real-time word count and milestone markers in Google Docs.
PDF Word Counter - A very minimal Mac GUI for counting words in a PDF
CountOfWords.com - CountOfWords.com is a handy tool that detects the number of words in a given text and tells you the total amount.