Hi,

You can look at the malinette project. The "malinette-soft" is a single folder to download : http://malinette.info/en/.

In some user cases :

An interesting feature would be to add a file inside a project with a list of dependencies (like package.json) and run Deken to download all of them.

Best.

-- 
Jérôme Abel
http://jeromeabel.net