In past we have covered many useful PDF tools like Quick PDF Tools, PDF Viewer & PDF Sam. Now here is yet another useful freeware PDF Tool, PDF Annot. PDF Annot is a handy application that enables you to add audio and text annotation to a PDF. The program uses JPedal SimpleViewer and iText library.
Basic version of Adobe PDF Reader doesn’t support annotation or any other features and for that you need to purchase profession version. If you are not willing to spend money then PDF Annot can become handy tool for you.