Prosebot is a template-based natural language generation application. Throughout the last years, ZOS has been developing Prosebot, alongside their collaboration with FEUP, as part of the zerozero.pt project.
This is an experiment for building ActiveRecord functionality on top of Doctrine2 using the Twig templating engine. Whether it is called Propel2 or not is irrelevant.
Foil brings all the flexibility and power of modern template engines to native PHP templates. Write simple, clean and concise templates with nothing more than PHP.
Liquid is a PHP port of the Liquid template engine for Ruby, which was written by Tobias Lutke. Although there are many other templating engines for PHP, including Smarty (from which Liquid was partially inspired)