When comparing Launchy vs Plank, the Slant community recommends Plank for most people. In the question“What are the best Linux app launchers?” Plank is ranked 5th while Launchy is ranked 14th.
Ranked in these QuestionsQuestion Ranking
Pro .deb files available for Debian based distros
For those using Debian based distros Launchy is very easy to install as their website has 32 and 64bit .deb files available. For all other diistros Launchy will have to be compiled from source.
Pro Easily themed with many available on the web
Launchy can be easily themedby placing themes into the Launchy theme folder and then selecting that theme from within the apps settings. There are also many user created themes available which is great for those that want their launcher to match the rest of their OS's theme.
Pro Solid and lightweight
Pro Simple and minimal
Plank is a good choice for those looking for something simple that just does its job well. There is no UI for options built in to the dock as to change anything those options will have to be accessed through a text file.
Pro Third party themer available
An additional third party app has been developed that allows theming the dock without the use of any extra resources. This is great for those that are not using elementary OS and the elementary tweaks extra.
Launchy was last updated in 2010.
Con Small selection of plugins
The official plugin page on Launchy's homepage hosts just 11 plugins.
Con No right click menu for some apps outside of elementary OS
Other file explorers and terminals (those not found in the default elementary OS) do not have any right click menus for the dock meaning it is impossible to launch multiple windows for certain file explorers or terminals.
Con Poor workplace awareness (cycling windows)
When configured to only show apps on current workspace, cycling an app open on multiple workspaces will switch workspace focus, update the dock and often leave you to cycle another app.