SUN (Slackware Update Notifier) is a tray notification applet
for informing about package updates in Slackware and CLI tool for
monitoring upgraded packages.

SUN works with slackpkg as well as with others tools and
repositories. Probably, you can use the SUN with other's Slackware
based Linux distributionsc as well.

Edit the configuration /etc/sun/repositories.toml file and change the
http mirror for your country. NOTE: ftp mirrors not supported.