jQuery - The Write Less, Do More, JavaScript Library.
Jinja2 - Jinja2 is a template engine written in Python.
React Native - A framework for building native apps with React
mustache - Mustache is a simple web template system with implementations available for ActionScript, C++...
Babel - Babel is a compiler for writing next generation JavaScript.
StringTemplate - StringTemplate is a java template engine for generating source code, web pages, emails, or any other formatted text output.