http://qtpfsgui.sourceforge.net/ HDR & Tonemapping (lots of different algorithms) with a nice gui. windows & linux (and imo others too).
freeware, of course.
maybe we should - in case of software - also write down the OS the software is written for (plus license model or price).
http://dng4ps2.chat.ru/index_en.html Converting CHDK Raw into DNG. Win & Linux, free
