Fido - The safest and most minimalistic smart lock
Tasker - Tasker is an application for Android which performs Tasks (sets of Actions) based on Contexts...
Doorport - Unlock your door using your smartphone
Automate - Automate various tasks on your Android smartphone or tablet.
Keyo - With a wave of your hand, pay, open doors, redeem tickets +
Locale - Locale helps content owners and translators work together, so Rails developers are free to write more code