Mustache.js - Minimal templating with {{mustaches}} in JavaScript - janl/mustache.js
XSLT in-browser implementation - XSLT is a cross-browser API for converting XML data into string or virtual DOM implemented natively with multithreaded streaming processing.
Vash - Vash is a template engine that offers a swift flow between code and content using Razor Syntax
FLAVE - Flave was created to bring ASP.
EJS - An open source JavaScript Template library.
Vue.js - Reactive Components for Modern Web Interfaces