I use some slim apps in small linux system , like minimal debian (fluxbox | openbox)
I'll show my friends raspberryPi , I want these apps in piCore repo :
feh
a lightweight and powerful image viewer, can also manage desktop wallpaper
qiv
a very small and pretty fast gdk/Imlib image viewer. It can play slide images in short time gap (like 0.1--0.3 s) , the effect like slow motion .(images from a video, use mplayer for output frames to images.)
guvcview
a GTK+ front-end for showing video from webcam (supported by the UVC driver)
GtkLife
a fast, featureful, open-source Conway's Life program for linux.
(this is not a utility, but it's math is easy and fun for children)
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BTW:
I want to know , for keep piCore slim, is these apps can easy compiled for fltk?
How can I know a app like guvcview ,it have simple GUI, change it for fltk?
And GtkLife had complex GUI than guvcview, how hard to change it for fltk?
How much work to do by modify C source code?
(for a man only know ./configure, make,make install , sometimes find some .h files )