1) Ring Doorbell

Ranked at number 1, Ring is the biggest success story that proved everyone wrong. The founder Jamie Siminoff went on Shark Tank with a product that consisted of a smart doorbell that was equipped with a camera. It also included features that could allow the homeowners to interact with visitors, even remotely. Siminoff worked on enhancing the system and integrated them all into an entire home monitoring system. Today, Ring is valued at 1.1 billion US Dollars.
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Edited by Apoorva Jujjavarapu