I made this script (adapted from mmmturkeybacon's Export Mturk History), because on mturk.com, your qual list is only sortable by qual name. To use this script, go to the "Qualifications Assigned To You" page. Click the Start button. It generates a list of all your currently assigned quals. When it finishes running, select all the output in the text box, and copy it into a spreadsheet (or text file).
Then you can sort and filter as desired, using your spreadsheet program's functionality - for example, to see which quals you most recently received, or all quals from a certain requester. And if you save copies of past versions of the output list, you can compare them in the future to see changes if desired.