In the 2000s, Crypton Future Media, best known for making Vocaloid - created ringtones in SMAF format for Yamaha's MA chips, and released CDs to promote the sites. Many of these got included on Japanese phones by manufacturers such as Sharp and Sony Ericsson.
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ALT NorthSound, a ringtone site Crypton launched in 2001
ALT MelodicLover, a ringtone site Yamaha launched in 2002, with ringtones created by Crypton
ALT G6.COM, a ringtone site Crypton launched in 2003. The mobile version is MobileMusicG6.