I'm yet again going on another trip away soon (to Hong Kong). I've uninstalled all of my applications from macports and I am now reinstalling a bunch of apps so I can process my photos during my holiday. So far I've re-installed,

• hugin - Cause I like doing panoramas when I get a chance.
• libraw - The new 0.12.0 release has a bunch of new demosaic methods which are nice to play with.
• pfstools - and friends for doing HDR images, but I suspect I will just end up using enblend instead
• enblend and enfuse - for stacking images to give a poorman's HDR image
• ImageMagick - so I can resize, blur, process images as I need too.
• RPP - for those moments where I need to manually go in and tweak an image.

As per usual nearly all the software is either opensource or free.