For Linux power users, these are few tools that will help to get things done quickly:
Synapse
This is an outstanding tool which can be used to quickly launch programs in Linux. Once installed it can be launched with various key board shortcuts. It runs in the background and popsup up a small window with excellent auto complete functionality.
(image from https://www.addictivetips.com/ubuntu-linux-tips/use-synapse-to-launch-programs-on-linux/ )
Installation instructions https://web.archive.org/web/20240105105544/https://www.addictivetips.com/ubuntu-linux-tips/use-synapse-to-launch-programs-on-linux/
Plank
If you are a fan of Window Manager like Window Maker or i3 then, plank is a nice little utility to provide an easy to access view of the windows.
See it action below:
Shutter
Screen shot and editing is an important functionality especially for collaborative remote environments and helps asynchronous communication. Shutter is a nice little utility that provides full fledged screen grab capability quite similar many paid tools out there.
All three tools are easily installable via dpkgs or similar on various Linux flavors.