Soundsnap - Shutterstock for sound effects
drumbit - A very easy to use drum machine.
SoundBetter - Marketplace for musicians and music production professionals
Remixlive - Remixer, beat maker and finger drumming instrument for iOS.
Kapwing - Collaborative video editor for modern creative teams
Onemotion Drum Machine - Drum Machine is a fully-featured web-based app developed by OneMotion to enable you to create Drum Beats and patterns.