Open Sans is a humanist sans-serif typeface designed by Steve Matteson and released in 2011. It is known for its clean and modern appearance, making it suitable for both print and digital media. The font features a large x-height, open forms, and a neutral yet friendly style, which enhances readability. This typeface is widely used in web design and user interfaces due to its versatility and legibility at various sizes. Open Sans is available in multiple weights and styles, allowing designers to create a cohesive look across different platforms and applications.