Albert is billed as an amazing, desktop environment agnostic omnilauncher. Read more hot
acidlaunch is a small, light-weight app launcher with a simple XML-based configuration syntax. It's written in C++ using gtk, gdk-pixbuf and libxml2.
Arc menu is a Gnome shell extension designed to replace the standard menu found in Gnome 3.
Arnic is an application launcher, in the style of Quicksilver. It's written in Python, so it's easy to add new items and actions. The plugins that come with the software are only for *nix, but there's nothing about the code that precludes plugins for Win32 or even OS X.
Avant Window Navigator
Avant Window Navigator (Awn) is a MacOS X like panel for the GNOME Desktop written in C. Besides launchers that can be dragged onto the bar, it features a task bar that behaves similar to the MacOS X dock. The window navigator uses the composite extension for transparency and other effects. Read more
Bashrun is a simple application launcher for X11. It runs a bash session within a small xterm window, thus conveniently providing all the common bash features like readline, tab completion, and history. Read more
Cardapio is a lean application menu and launcher for Gnome.
Dash to Panel
Dash to Panel is an icon taskbar for the Gnome Shell. This extension moves the dash into the gnome main panel so that the application launchers and system tray are combined into a single panel, similar to that found in KDE Plasma and Windows 7+.
diascriptlauncher is a plugin that allows you to launch a customizable list of shell scripts from Dia.
FancyLauncher is a program launcher with many customizable features.
gMUTOO is an elegant service launcher/stopper/monitor that resides in the window manager tray. It has been mostly thought for the launch of daemons (httpd, ftpd, sshd and so on), but it can be used to start/stop pretty much anything.
GNOME Launch Box
GNOME Launch Box is generally an application launcher. It's very influenced by Quicksilver for Mac OSX.
Gnome-Pie is a slick application launcher for Linux. It?s eye candy and pretty fun to work with. It offers multiple ways to improve your desktop experience. It is made of several pies, each consisting of multiple slices. The user presses a key stroke which opens the desired pie. By activating one of its slices, applications may be launched, key presses may be simulated or files can be opened.
KDE URL Link Launcher
KDE URL Link Launcher allows you to launch URL link files that are found on Microsoft Windows operating systems.
Kupfer is software designed to change, speed up and make everything about files and programs more fun on your computer. Kupfer is heavily inspired by Quicksilver. Read more
Lancelot is an application launcher menu (or ALI) for KDE Workspace designed to provide a place from which all your jobs begin. It provides quick access to applications, places, documents, contacts, and system information.
an all-in-one file handling solution for use with any software that uses file type to file handler mappings
linbar launcher is a launchbar with a GTK interface. It has rudimentary tab completion and the ability to add shortcuts (for example a Google or Wikipedia search).
Mutate is a simple launcher inspired by Alfred (OS X app) for Ubuntu. Be more productive with hotkeys, keywords and file actions at your fingertips.
Pogo is a speedy, highly extensible, skinnable, and user-configurable program launcher and application front-end for X11. It features a set of easy-to-use control options, including icon rotation, shifting, and switchable window orientation. Pogo comes with over 400 different pre-made application launcher buttons to choose from.
a free, GNU licensed command line launcher for your chosen X Windows desktop environment
Simdock is a dockbar that features a zoom effect (like the OS X dock) and customized launchers. It integrates well with GNOME but works on most desktop environment and does not require Compiz or 3D acceleration. Read more
Synapse is a semantic launcher that makes use of the Zeitgeist engine. Read more
Ulauncher is a small app launcher written in Python that loads quickly, uses fewer resources, and can run on any desktop environment.
a simple application launcher for the Window Maker dock. It is loosely based off of WMButton
Yeahlaunch is a simple application launcher that puts an auto-hiding animated menu on top of your screen.
Zazu App is a fully extensible and open source launcher for hackers, creators and dabblers. It comes with sane defaults to make it useful out of the box.