The tool we have been lately working is a Free Online Word Counter that displays the Number of Words and Number of Characters for the input text. This tool is currently in the Alpha Version and feel free to send the bugs/suggestions.
We have been working on a Ajax based Free Domain Name Checker. The tool is still in the alpha version. We guess it works reasonably well. Feel free to send suggestions/feedback/bugs encountered using the Contact Form.
The Domain Checker supports 14 extensions including .com, .net, .org, .us, .info, .de, .co.uk etc. Go using the below link.