Price: EUR 19.99
Web Site: http://www.macility.com/products/typinator/
This is a great application that watches as you type and can fix your spelling mistakes in any application. It is a real life saver for me and my terrible typing/spelling. You can also set up shortcuts so that you can type a short bit of text and it gets replaced with much more text. I like to use “dt “, that is a “d” and a “t” followed by a space to insert the date, fantastic. And it will do this in any application, even the finder.