xca from home:napobear project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:napobear/openSUSE_Tumbleweed/home:napobear.repo zypper refresh zypper install xca
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:napobear/15.4/home:napobear.repo zypper refresh zypper install xca