Jinja2 - Jinja2 is a template engine written in Python.
Dust - A suite of digital safety tools for millennials.
mustache - Mustache is a simple web template system with implementations available for ActionScript, C++...
Jtwig - Jtwig is a configurable and extensible template engine for Java.
Domonic - generate HTML with python 3. A DOM API, JavaScript API and many other cool features. Can be used as a fast prototyping tool. pip install domonic --upgrade
Apache Velocity - Velocity is a Java-based template engine.