Cropping and scaling images is something which we do a lot if you dealing with images. There are lots of free application which does this job, but then you need to install them on your PC. Crop and Scale Online is a free web service which allows you to edit images with basic features. You can crop, scale, rotate images and also add text to it. The interface is flash powered and does the job pretty quickly and neatly.
Once you are done with the editing, you can save back the images. Although you can include multiple files into the interface, you can edit only one at a time. Another great feature of this tool is that you can embed it on your website as well, the code is available for download. This is pretty useful for image hosting sites where users can do basic editing.