[ Thanks to kiterunner for this link.
]
“This is why I love Linux. If you don’t like one
application, choose from the alternatives, simple as that. GNOME Do
is an incredible launcher application for Ubuntu. But since GNOME
Do is basically a Mono application, many might refrain from using
it. But don’t worry, Synapse and Kupfer are equally good or even
better GNOME Do alternatives. Learn more.“Kupfer
“Kupfer is a convenient command and access tool that does the
job. The default keyboard combination to launch Kupfer is
ctrl+space and by simply hitting down arrow, you are able to access
your list of applications quite easily. Below screenshot depicts
launching of Opera browser in my Ubuntu using Kupfer.”