https://ethresear.ch/t/improving-security-for-users-of-defi-services-dexs-through-mpc-threshold-signatures/10035/6

We implemented the Zengo MPC ECDSA TSS for WebAssembly. In this way you can run it in a browser or any platform not supporting Rust [directly]. Hope it helps to have more alternatives: GitHub – CoinFabrik/wasm-multi-party-ecdsa: Full WASM Secure Threshold Signature ECDSA Library