Ajax Pages - Similar idea to JST, but less powerful. I’m not a fan of the syntax either, but it does the job of a simple template.
Prototype.js Templating - I wasn’t ware that this even existed until recently. I’m not sure of the future development plans for this, but as it stands it is just useful for very basic variable replacement. Examples are provided using strings, but you can just as easily use
innerHTMLsimilar to that of other templating engines.