These tools all work in different ways, but I would love if someone could write an app store for these (and others) to live in so we could one-click install and one-click uninstall dev tools locally. I'd definitely pay for that manager app, and it'd be way easier to give micro-donations to open source tools we use a lot.
I think Ender seems to fit the bill pretty well. Being a package manager for JS[1], it allows you to download and manage dependencies for each project. A bit like PEAR or CPAN or NPM or whatever, with some client side stuff to manage those dependencies in the browser. That's what I got from a quick scan, anyway.
These things are trivial to use for even the most inexperienced CLI user, mind, so something like this would likely do well for you.
I like the idea of it so I'm going to float it at work and see what people think.
