CFT: CoffeeScript fragment templates
CFT lets you embed CoffeeScript in your markup. It's a lot like Eco, except it generates Document Fragments instead of strings.
Using document fragments for templates lets you do some interesting things, such as dynamic DOM updation. For example:
<% @observe @post => %>
<!-- Run whenever post changes -->
<span><%= @post.get('name') %></span>
<% end %>
<% @observeEach User.all() (user) => %>
<!-- Run whenever we create/update/change a user -->
<label>Name: <%= user.name %>
<% end %>