ArgoUML
ArgoUML is the leading open source UML modeling tool and includes support for all standard UML 1.4 diagrams. It runs on any Java platform and is available in ten languages.
Site: http://argouml.tigris.org/
Install on Slackware
1 cd ~/Downloads
2 wget http://argouml-downloads.tigris.org/nonav/argouml-0.34/ArgoUML-0.34.tar.gz
3 su
4 cp /home/vitor/Downloads/ArgoUML-0.34.tar.gz /opt/ide
5 mkdir -p /opt/ide
6 tar xvzf ArgoUML-0.34.tar.gz
7 cd argouml-0.34
8 chown vitor * -R
9 chgrp users * -R
10 exit
11 cd /opt/ide/argouml-0.34/
12 ./argouml.sh