Clyp - Clyp is the easiest way to record, upload and share audio. No account required.
Defonic - Create a unique sound environment at home or in the office
Moodly - Get a better sense of focus and relaxation by listening to ambient nature sounds.
Nugget - Find your perfect startup idea
MyNoise - Custom shaped online noise machines. Many Many generic sounds
AudioNotes - Easily record and share audio messages from your Mac menubar