Lightweight software refers to applications that require minimal system resources to operate effectively. These programs are designed to run smoothly on devices with limited processing power, memory, or storage. This makes them ideal for older computers or mobile devices, where efficiency is crucial. Such software often focuses on essential features, avoiding unnecessary complexity. Examples include simple text editors or basic image viewers, which provide core functionalities without the overhead of larger, more complex applications. This approach allows users to accomplish tasks quickly and efficiently, enhancing overall productivity.