Why I Chose Tauri v2 for a Desktop Overlay in 2026

How a prototype spike validated a framework decision on real hardware. Building an overlay that sits on top of a fullscreen game sounds straightforward until you start listing requirements. Transparent background. Always on top. Click-through on empty space. Rich UI with styled lists and icons. Windows and Mac. Low CPU and RAM overhead. The list of frameworks that can do all of that is short. My project is Manasight , a companion overlay for Magic: The Gathering Arena. I'd committed to Windows and Mac from day one but hadn't picked the framework yet. This post is the story of how I chose one, what scared me about it, and how I tested whether those fears were justified. What an overlay requires Manasight's overlay needs to do a few things that most desktop apps don't. It has to render transparent panels on top of a running game, stay visible at all times, and let mouse clicks pass through to the game on transparent areas while capturing clicks on the UI panels themselves. That last requ