wry

Well, Tauri (or more specifically the 'ri' part: https://github.com/tauri-apps/wry/) uses different engines on different platforms, so I assume there's the potential for quirks.

A ton of time and resources have been put into making web apps work across multiple rendering engines. These days, it can be difficult to have something break on one platform if you are using a modern development stack. The webview engines that Tauri uses are all quite modern, see https://github.com/tauri-apps/wry/discussions/202 for more details.

Came here to say this. It's a site designed for idiots not engineers. How does rendering work? Can't even tell if it's HTML based or some hipster immediate UI toolkit nobody's heard of. What do I need to give up to get a 640kb binary? etc etc. Answering my own question, https://github.com/tauri-apps/wry , so looks like it loses one of the advantages of Electron in that you control the exact browser in use. Maybe that's incorrect. Who knows? Web site appears to not exist to provide such important details. https://github.com/tauri-apps/tauri/blob/dev/ARCHITECTURE.md could lose a few thousand words, but this seems to be the real starting off point

For Windows it will actually install Webview2 if it's not there already so it's not running on deprecated IE. https://github.com/tauri-apps/wry#windows

They use whatever is the system WebView on the platform you run the code on. On Windows that's the Edge engine, on MacOS it's Safari's engine, etc. Those are all some combination of C and C++. See https://github.com/tauri-apps/wry Edit: s/IE or Edge/Edge

We didn't take over control, rather we helped setup an independent org around webview and other related repos. At the time, the original author of webview expressed plans to work on it a lot. However, this didn't really happen. Webview is stuck with some nasty bugs and missing features, and none of the members of the Tauri team had enough C experience to fix it efficiently. Instead, we created our own pure Rust solution (https://github.com/tauri-apps/wry). We've already given it way more features than the original webview project, and it doesn't carry the bugs that plagued webview either. The next release of Tauri (about a month or so out) will use Wry, and will have features such as multi-window and fancy window styling (frameless, fullscreen, custom controls, etc...).