but nothing about graph drawing. I don't know any open source library that produces good looking graphs - for all type of graphs, not only some special cases.

hrmmm... point taken.

And I'm sorry to hear GraphViz (graphviz on CPAN) does not appear to meet the OP's needs - what (little?) I've done with it so far has been most satisfactory.

Super Search turned up the following nodes:

• Really slick Charts and Graphs
• Portable simple line graph module?
• Charting Modules
• Professional, "a-la-OpenOffice", 3D graphs
• develop animation and graphics
• creating graphs
• (YA) Q: re "which graphics module?"

Perhaps there may be something in one of them that would be useful to the OP. The OP may also wish to take a look at gnuplot, plotutils, and gnuplot stuff on CPAN.

HTH,

Update: Pronoun swap. I inadvertantly confused the OP and the person to whom I was replying (D'oh!). I plead insufficient caffeination.

Update 2: In addition to TouchGraph (SourceForge), I note there is also a project called JPowerGraph (SourceForge):

"JPowerGraph is a Java library for creating directed graphs for both Swing and SWT. It supports graph movement, selection, context menus, tooltips and dynamic edge creation. JPowerGraph has a spring layout algorithm based on that used in TouchGraph."

...
planetscape