Square is a widely-used merchant processor known for its user-friendly, plug-and-play hardware and simple pricing model, making it ideal for small and micro-businesses. What differentiates Square from competitors is its ease of entry—offering free point-of-sale software, fast setup, and no long-term contracts. Beyond processing payments, Square provides a broad range of standalone tools like online store builders, appointment booking, and team management, many of which can be accessed independently without committing to a full hardware suite.