Apps similar to WidgetSpark include Rainmeter, which is free and open source. Other options are Wigify, ViBox, Eww and Ignis (widget framework). In total there are five Desktop Customization Tools like WidgetSpark for Mac, Windows and Linux.
Transform your Windows desktop with customizable skins for displaying system resources, weather updates, RSS feeds, and more. Community-driven, Rainmeter offers real-time data monitoring, enhanced aesthetics, and privacy-focused features. Its portable design requires no installation and includes a dark mode.
United States
A desktop app that lets you create and display custom HTML/CSS/JS widgets right on your desktop.
Germany
EU
Make your desktop truly yours with the power of wide-ranging personalization options offered by ViBox. We believe that your desktop should reflect your style, needs, and preferences, and that's why we've crafted a widget experience that goes beyond the ordinary.
Elkowars Wacky Widgets is a standalone widget system made in Rust that allows you to implement your own, custom widgets in any window manager.
GermanyEU
A widget framework for building desktop shells, written and configurable in Python
