PuPHPet : A simple GUI to set up virtual machines for Web development.
Feed43 : Your favorite site doesn't provide news feeds?
This free online service converts any web page to an RSS feed on the fly.
YAML Builder : A tool for visual layout development of YAML based CSS layouts
veewee : VeeWee: the tool to easily build vagrant base boxes or kvm,virtualbox and fusion images
Otto : Otto knows how to develop and deploy any application on any cloud platform, all controlled with a single consistent workflow to maximize the productiv...
Rove.io is a service that allows you to pregenerate typical Vagrant builds.