OBS.: tested under gnome-shell on fedora 21. Just create a new file at /usr/share/applications/[app_name].desktop: Example (skype): [Desktop Entry] Name=Skype Comment=Skype Internet Telephony Exec=skype %U Icon=skype.png Terminal=false Type=Application Encoding=UTF-8 Categories=Network;Application; MimeType=x-scheme-handler/skype; X-KDE-Protocols=skype