Cool Sounds - Sounds Collection: Animals, Humans, Tools, Ultrasounds, Ringtones and more...
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.
Format Factory - Format Factory is software that allows the user to convert media into various file formats. The software is a product of PC Free Time, a Chinese software development company. Read more about Format Factory.
Song Cutter and Ringtone Maker - Free Online Ringtone Maker
MakeOwnRingtone.com - Make your own ringtone! Follow the steps:
Ringer.org - Ringer.org is a free ringtone maker to make ringtones from any song or audio file.