WSJT-X is a popular software program used for weak signal digital communication in amateur radio. It allows operators to send and receive messages using various digital modes, such as FT8, JT65, and WSPR. The software is designed to work well in low signal conditions, making it ideal for long-distance communication. Developed by Joe Taylor, K1JT, and his team, WSJT-X is open-source and available for multiple operating systems, including Windows, macOS, and Linux. The program features an intuitive user interface, enabling both beginners and experienced operators to easily engage in digital modes and enhance their communication capabilities.