Top Alternatives to Rainmeter

Conky is a highly configurable, lightweight system monitor that displays system information directly on your desktop. It is known for its extensibility and ability to show a wide range of data.

Open Hardware Monitor is a free and open-source software designed to provide comprehensive monitoring of critical hardware components. It tracks temperatures, fan speeds, voltages, load, and clock speeds for a wide range of system components, including CPU, GPU, motherboard, and hard drives, making it an essential tool for system health assessment and troubleshooting.

HWiNFO is a comprehensive system information and hardware monitoring tool for Windows. It provides detailed insights into your computer's components, including CPU, GPU, motherboard, memory, and storage devices. Ideal for system analysis, troubleshooting, and monitoring hardware performance.

XWidget is a free, lightweight desktop customization platform allowing users to add highly configurable and visually appealing widgets to their desktop. It features a powerful visual editor for creating custom widgets and supports smooth animations and system monitoring.

GeekTool is a powerful macOS application designed to enhance your desktop customization by displaying various information directly on your background. It allows users to run shell scripts, display media, or show file contents through 'Geeklets,' effectively turning your desktop into a dynamic dashboard of system data and other relevant information.

Bginfo is a Sysinternals utility that automatically displays relevant information about a Windows system on the desktop wallpaper, making it easy to see configurations at a glance.

GKrellM is a highly customizable system monitor for multiple operating systems. It provides a compact, stackable interface displaying various system data like CPU load, memory usage, network activity, and more, making it a favorite for users who need detailed system insights without a heavy footprint.

Sidebar Diagnostics is a lightweight, customizable sidebar for Windows that provides real-time monitoring of your system's hardware, including CPU temperature, memory usage, fan speeds, and more. It's designed to be unobtrusive while keeping essential performance data readily available.

Desktop Info is a lightweight and highly customizable utility designed to display essential system information directly on your desktop wallpaper. It provides real-time monitoring of hardware, network, and system status, allowing users to stay informed at a glance without needing to open separate monitoring applications.