Not words but applications, that would be : Amibroker, Digikam and Firefox.

Brief explanation :

• Amibroker : i am a stock trader that rely on Amibroker to do technical analysis, it runs almost perfectly with Wine,
• digiKam : I love photography, and digiKam is the perfect tool for me, from lens correction, retouching to uploading, digiKam has it all,
• Firefox : as a blogger Firefox is my browser of choice to browse the web for news, and blog right within Firefox with ScribeFire Next.

All in Ubuntu of course :)