AthTek Free Voice Changer is a handy audio tool for Windows users. It has a very clean interface without any exaggerated color and overstated features. It clearly lists 4 steps for you to obtain the sound effects you want.
The MyContacts keep a record, with pictures, of all your external contacts, family, friends, business relations and so on. It is possible to import all contacts from the MS Outlook. The user can freely change all screen text as well as screen colors.