Social proof software is a marketing tool designed to build trust and create urgency by displaying real-time actions of other users on a website. It operates on the psychological principle that people are more likely to do something if they see others doing it. These tools typically manifest as small, non-intrusive pop-ups or notifications that show things like "John from New York just purchased this item" or "25 people are currently viewing this page." They can also be used to display recent positive reviews, showcase the number of recent sign-ups, or highlight how many people have bought a product in total. By providing live evidence of popularity and customer activity, social proof software helps validate a visitor's decision-making process, reduce hesitation, and combat cart abandonment, ultimately leading to higher conversion rates.