The git and systemd ones create several aliases for frequent commands:

git commit -> gc

git status --short -b -> gsb

git checkout -> gco

systemctl --user restart -> scu-restart

Nothing that you couldn't come up with yourself, but I've been using for so long it has become a standard for me.

The fzf plugin enables a fuzzy finder when you hit ctrl+r or ctrl+t. You need fzf installed.