The guys here at TINE have been working on implementing support for the Freemarker templating language in Enonic XP and we feel that it has now been tested and poked enough internally that we can release it to the general public for testing. The view lib has been used for our two first projects and seem to be behaving pretty decently both with regards to performance and easy of use.
Feel free to have a look at https://github.com/tineikt/xp-lib-freemarker for instructions on how to include it in your app and try it out. We will be working on getting it hosted on a public maven repo, and hopefully added to the market in the follow weeks. You can find some examples of syntax etc by taking a look at the slides we showed during the Enonic XP meetup yesterday: https://docs.google.com/presentation/d/1l4eKR3IJk8qPLKnmKGaaxgmyOqAhgIrB87i7p3dKbyk/edit?usp=sharing
Feel free to chime in if you have suggestions on improvements or just general pointers. Error handling is one of the areas that still need some work, so keep the server log handy to examine any exception that might appear.
TINE IKT, Digital Utvikling