1)   Aiseesoft iPhone Ringtone Maker 6.2.10
Aiseesoft iPhone Ringtone Maker is the best software to make iPhone/iPhone 4 M4R Ringtone from your own video, audio and DVD sources, then transfer it to your iPhone/iPhone 4 directly.

 2)   Xilisoft iPhone Ringtone Maker 3.0.3.0802
Xilisoft iPhone Ringtone Maker turns your dream of making your own iPhone ringtone with loved music into reality in the way of converting almost all mainstream video/audio formats including AVI, MPEG, WMV, DivX, MP4, H.264/AVC, AVCHD, MKV, RM, MOV, X

 3)   ImTOO iPhone Ringtone Maker 1.0.20.1127
ImTOO iPhone Ringtone Maker lets you custom your own iPhone ringtone by converting almost all videos/audios and even music bought from iTunes store to M4R ringtone format for iPhone, and upload the ringtone to iPhone directly if you want.

 4)   4Media iPhone Ringtone Maker 1.0.20.1030
Capable of converting multiform video/audio files to M4R ringtone, 4Media iPhone Ringtone Maker makes it possible to turn any music (even from iTunes store) into iPhone ringtone and transfer it to iPhone automatically to colorize your iPhone.