The biggest difference between cea-hpc/sshproxy and sshr is that the developer using sshr can freely incorporate own hook functions that dynamically determines the destination host. Thanks to the hook function, we can manage the information of destination host in the free data format, such as database or yaml file and so on, although sshproxy forces us to manage the information by etcd.

Of course, sshproxy seems to have some great features that sshr doesn't have. Thank you for teaching me a great solution!