Converter365.com is a universal online tool for the conversion of a multitude of different formats that is also completely free of charge. To find the format you need, you can search nine categories Image, Vector, Video, Audio, Documents, Archive, Spreadsheet, Presentation, and E-Book.
Cool Sounds - Sounds Collection: Animals, Humans, Tools, Ultrasounds, Ringtones and more...
File Converter - Convert & compress everything in 2 clicks!
Ringdroid - Create your own ringtone by editing a music track in your library, or record a new one directly...
CR2toGPGconverter - If you need to open, edit or print the images from your Canon DSLR that are in CR2 format, you’ll have to convert them in JPG or some more accessible image format.
Audiko - Audiko Ringtones is a free to use mobile application that can help you customize your mobile phone by setting the most beautiful images your background and the most popular ringtones as your notification signals.
Smallpdf - PDF document management and conversion suite