Desktop files

firefox.desktop

[Desktop Entry]
Name=Firefox
Comment=Web Browser
GenericName=Web Browser
X-GNOME-FullName=Firefox Web Browser
Exec=env MOZ_ACCELERATED=1 MOZ_WEBRENDER=1 /opt/firefox/firefox %u
Terminal=false
X-MultipleArgs=false
Type=Application
Icon=/opt/firefox/browser/chrome/icons/default/default128.png
Categories=Network;WebBrowser;
MimeType=text/html;text/xml;application/xhtml+xml;application/xml;application/vnd.mozilla.xul+xml;application/rss+xml;application/rdf+xml;image/gif;image/jpeg;image/png;x-scheme-handler/http;x-scheme-handler/https;
StartupWMClass=Firefox
StartupNotify=true

thunderbird

[Desktop Entry]
Encoding=UTF-8
Name=Thunderbird
GenericName=Mail/News Client
Comment=Mail/News Client
Exec=/opt/thunderbird/thunderbird %u
Icon=/opt/thunderbird/chrome/icons/default/default128.png
Terminal=false
Type=Application
StartupNotify=true
MimeType=x-scheme-handler/mailto;