Winpower is described as 'WinPower is a powerful UPS monitoring software, which provides user-friendly interface to monitor and control your Inverter system. The software provides complete power protection for computer system while encountering power failure'. There are three alternatives to Winpower for Windows, Linux and Mac. The best alternative is Network UPS Tools, which is both free and Open Source. Other great apps like Winpower are PowerChute (Free Personal) and UPS Assistant (Free).