Pencil on Ubuntu
Pencil is a great drawing and prototyping tool available on Linux, MacOSX and Windows. I'm testing it for a few days as a replacement for Dia.
It works well on MacOSX but unfortunately it has some problems on latest Ubuntu Linux. It seems that all export tools are broken in a way or an other, the most important for me being direct export as a PNG image. There an issue for that which explains the problem: basically, Pencil is not compatible with recent versions of "xulrunner", the binary and toolkit that powers all the mozilla tools and pencil. Luckily there's a simple workaround which consists in using xulrunner 16 vendored in "/opt" :
wget -O - http://ftp.mozilla.org/pub/mozilla.org/xulrunner/releases/16.0.2/runtimes/xulrunner-16.0.2.en-US.linux-x86_64.tar.bz2 | sudo tar xjf - -C /opt && sudo sed -i '/application.ini/ { s|^/usr/bin/firefox|/opt/xulrunner/xulrunner|; s/$/ --no-remote/; }' /usr/bin/pencil
Happy drawing!