FlowChart TOOLs:
yEd Graph Editor
http://www.yworks.com/en/downloads.html
Git GUI
qGit
sudo apt-get install qGit
gitk
sudo apt-get install gitk
Cross Platform Project Manage
CMake
sudo apt-get install cmake-qt-gui
Code Document/Manual Generator
doxygen
sudo apt-get install doxygen-gui
CHM files viewer
chmsee
sudo apt-get install chmsee