pan-0.13.4 is a GTK2 based newsreader program.
KNode is a QT based newsreader program from kdenetwork-3.1.
KMail is a QT based mail client from kdenetwork-3.1.
balsa-2.0.10 is a GTK2 based mail client.
mozilla-1.3 includes both a mail client and newsreader in its installation.