You need to use Conky, there's no equivalent as far as I know.
Here's how to display IP address info:
Conky can execute commands with the object ${exec command}
.
I don't know whether you want your internal or external IP shown on your configuration, but if you can find a way to display that information in the command line interface and then plug that command into Conky you should have what you want.
For external IP address, something like this should work:
${exec curl -s www.icanhazip.com}
For internal IP address, for multiple interfaces you'll want something like
${if_existing /proc/net/route wlan0}
${addr wlan0}
${else}${if_existing /proc/net/route eth0}
${addr eth0}
${else}
Network disconnected
${endif}${endif}