Word-Counter is described as 'helps you to quickly count the number of sentences, lines, words, unique words, characters, characters without spaces and spaces in a text' and is an app in the News & Books category. There are four alternatives to Word-Counter for Online / Web-based, Firefox, Google Chrome and Mac. The best alternative is Word Counter for Mac. It's not free, so if you're looking for a free alternative, you could try Word Count Tools or Word Calculator.
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.
TheReadTime.com accurately projects the read time and speak time, based on the word count of any piece of text. An ideal tool for bloggers, content writers, and anyone who wants to quickly estimate reading and speaking times for texts of all lengths.