Flipkart co-founder Binny Bansal has come up with a new venture - 'OppDoor', which will help e-commerce companies expand operations globally by providing them with end-to-end solutions, a media report said on Tuesday. According to the filings, the company is registered in Singapore and was founded in May 2021. OppDoor was previously known as Three State Ventures Pte Ltd, reports Moneycontrol.