The best alternatives to knoc.me are Mapped, Snapslack, and unSend.it. If these 3 options don't work for you, we've listed a few more alternatives below.
Are you a startup founder? Great! Mapped is a mobile app for you to learn from more advanced founders fast. You can ask questions and instantly see founders who already answered similar ones, with the answers i...
PhoneTag is a new fun messaging service and social game that enables you to instantly send disappearing voice messages with funny voice filters including autotune to friends and family.