Summer 2021 is a builder-heavy YC cohort focused on products with real operational leverage. From financial backend systems and digital healthcare to connectivity products and enterprise workflow software, the batch captures a strong cross-section of startups modernizing core technical and business infrastructure. This page gives you a structured way to explore startups building the software behind modern payments, operations, communications, and applied vertical workflows.

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Each row includes company details, founder profiles, relevant links, and key startup information in one place, giving you a fast way to research companies, identify trends, and find founders for recruiting, partnerships, or outreach.