Tags
Create a tag
Repository › New Tag… (⇧⌘G / Ctrl+Shift+G), or New Tag… on a commit. A tag is lightweight, or annotated with a message.
Push and delete
A tag's context menu offers Push '…', Create Branch from '…'… and Delete….
Which tags the remote has
Each local tag is marked with whether it is already on the remote; tratto asks the remote with git ls-remote.