eleventy-plugin-jstl
JSTL is back in Eleventy! Sort of. Uses [xhtm](https://github.com/dy/xhtm) and [@small-tech/hyperscript-to-html-string](https://codeberg.org/small-tech/hyperscript-to-html-string) to give you back simple templates without having to learn arcane syntax.
template4js
A JavaScript template engine support node.js and the browser.