I have installed CoreOS on a laptop to use it as a Docker host. I really like Kitematic on my mac to create and manager containers. I dont see an option to connect to the remote docker on CoreOS using Kitematic. Are there other tools I can use to connect to a remote docker host and use GUI rather than command line to manager it.
I also like Kitematic a lot! As an alternative in CoreOS, you can try docker-ui, and it's evolution portainer.
They are both docker containers that can help you find / run docker images and inspect docker volumes / network / container stats.
You can also launch new containers directly through the web UI. More information on this good review of the portainer's possibilities
Rancher UI from Rancher Labs maybe also be worth looking at. It is more designed as a docker orchestration tool (when you operate a docker swarm cluster for instance).