Supported repositories:

> sbo: https://slackbuilds.org/
> ponce: https://cgit.ponce.cc/slackbuilds/
> slack: https://slackware.uk/slackware/slackware64-15.0/
> slack_extra: https://slackware.uk/slackware/slackware64-15.0/extra/
> slack_patches: https://slackware.uk/slackware/slackware64-15.0/patches/
> alien: http://slackware.uk/people/alien/sbrepos/15.0/x86_64/
> multilib: https://slackware.nl/people/alien/multilib/15.0/
> restricted: https://slackware.nl/people/alien/restricted_sbrepos/15.0/x86_64/
> gnome: https://reddoglinux.ddns.net/linux/gnome/41.x/x86_64/
> msb: https://slackware.uk/msb/15.0/1.26/x86_64/
> csb: https://slackware.uk/csb/15.0/x86_64/
> conraid: https://slack.conraid.net/repository/slackware64-current/
> slackdce: https://slackware.uk/slackdce/15.0/x86_64/
> slackonly: https://packages.slackonly.com/pub/packages/15.0-x86_64/
> salixos: https://download.salixos.org/x86_64/slackware-15.0/
> salixos_xtra: https://download.salixos.org/x86_64/slackware-15.0/extra/
> salixos_patches: https://download.salixos.org/x86_64/slackware-15.0/patches/
> slackel: http://www.slackel.gr/repo/x86_64/current/
> slint: https://slackware.uk/slint/x86_64/slint-15.0/
> pprkut: https://repo.liwjatan.org/pprkut/15.0/x86_64/

Edit the file '/etc/slpkg/repositories.toml' file for more.