Fender Tune - Free guitar and bass tune iOS app
Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.
Roadie Tuner - Fine tune your guitar in seconds
Skrill - Skrill (formerly known as Moneybookers) is the cheaper way to send and receive money worldwide.
2unify Stand - The world's first fully autonomous robotic guitar tuner
Braintree - An all-in-one solution to accept, process, and split payments in your mobile app or online - from small business to large enterprise.