What: bioTk
Description: bioTk is a library of widgets and utilities designed to support the creation of graphical user interfaces in the domain of computational biology and genome informatics.
Contact: mailto:[email protected] (David Searls)

What: bioTkperl
Description: A beta release port of David Searls bioTk Tcl/Tk widgets to Perl/Tk (ptk), with some enhancments. Not all components have been ported yet. The components have been reimplemented as perl classes.
Contact: mailto:[email protected] (Gregg Helt)

[The bioTk link above is dead as a link can be. Mailing the institution asking for bioTk gave no reply. I have a patched version that uses namespaces and package provide for bioTk. The license terms of the package are unclear. Michael Schlenker ]