telegram-desktop from home:mrbadguy:telegram 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:mrbadguy:telegram/openSUSE_Tumbleweed/home:mrbadguy:telegram.repo zypper refresh zypper install telegram-desktop