I like it
Simple and straightforward, easy to configure and build (4.2-RELEASE FreeBSD, gcc 2.95.2), easy to use.
Easy to compile and install (autoconf), works great on RedHat 6.2.
the author mentions problems with the curses that comes with RedHat 5.0 - so I guess those have been fixed.
An open, cross-platform journaling program.
A scientific plotting package.