Packages with the startup-notification use flag

Global definition: Enable application startup event feedback mechanism.

mail-client / claws-mail : An email client (and news reader) based on GTK+

mate-base / mate-desktop : Libraries for the MATE desktop that are not part of the UI

www-client / seamonkey : Seamonkey Web Browser

x11-libs / libwnck : A window navigation construction kit

x11-libs / mx : A widget toolkit using Clutter

x11-misc / spacefm : A multi-panel tabbed file manager

x11-misc / tint2 : Lightweight panel/taskbar for Linux

x11-misc / xfe : MS-Explorer-like minimalist file manager for X

x11-terms / rxvt-unicode : rxvt clone with xft and unicode support

x11-wm / marco : MATE default window manager

x11-wm / openbox : Standards compliant, fast, light-weight, extensible window manager

xfce-base / libxfce4ui : Unified widget and session management libs for Xfce

xfce-base / xfwm4 : Window manager for the Xfce desktop environment