For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:p_seiderer:flwm/openSUSE_Tumbleweed/home:p_seiderer:flwm.repo
zypper refresh
zypper install flwm
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:p_seiderer:flwm/openSUSE_Factory/home:p_seiderer:flwm.repo
zypper refresh
zypper install flwm
For openSUSE 13.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:p_seiderer:flwm/openSUSE_13.2/home:p_seiderer:flwm.repo
zypper refresh
zypper install flwm
For openSUSE 13.1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:p_seiderer:flwm/openSUSE_13.1/home:p_seiderer:flwm.repo
zypper refresh
zypper install flwm
For openSUSE 11.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:p_seiderer:flwm/openSUSE_11.4/home:p_seiderer:flwm.repo
zypper refresh
zypper install flwm
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:p_seiderer:flwm/15.4/home:p_seiderer:flwm.repo
zypper refresh
zypper install flwm