I loved Blaze and closest thing to it is Ractive(https://ractive.js.org/ https://ractive.js.org/). For backend reactive stuff there are many options like horizo

I loved Blaze and closest thing to it is Ractive(https://ractive.js.org/ https://ractive.js.org/). For backend reactive stuff there are many options like horizon/firebase/rapid.io/gun/etc, but for something more complex easiness of RPC through DDP is hard to replace though.