Tauri is described as 'toolkit that helps developers make applications for the major desktop platforms - using virtually any frontend framework in existence. The core is built with Rust and the CLI leverages Node'. There are eight alternatives to Tauri for Mac, Windows, Linux and React. The best alternative is Electron, which is both free and Open Source. Other great apps like Tauri are NeutralinoJS (Free, Open Source), NW.js (Free, Open Source), Proton Native (Free, Open Source) and DeskGap (Free, Open Source).
pywebview is a lightweight cross-platform wrapper around a webview component that allows to display HTML content in its own native GUI window. You may think of as Electron for Python (minus huge executable sizes).
Native, high-performance, cross-platform desktop apps - built with ReasonML. Revery is kind of like super-fast, native code Electron - with bundled React-like/Redux-like libraries and a fast build system - all ready to go.