software that I use

c++ -> development of math oriented projects
conky -> lightweight process viewer
fslint -> gui for deleting duplicate and empty dir
fvwm -> lightweight window manager
gdeskcal -> calender for desktop
gmusicbrowser -> music player with functionality rename/delete/move
iceweasel/firefox -> internet browser
kate -> editor with a konsole
leafpad -> lightweight text pad
mercurial - distributed version control system
octave -> scripting lile matlab
pico -> general console based editing
pidgin/gaim -> messenger client
python -> great programming language
workrave -> taking breaks
vux -> random music player
This post will be edited continuously :)