Here's a few notes on apps I installed trying out elementaryOS 7 on a MacBook Air.

Install packages

sudo apt install zsh vim git ansible

Install wifi drivers

sudo apt install linux-headers-$(uname -r)
sudo apt install bcmwl-kernel-source

Install 1Password

Download the .deb file from 1Password

sudo apt install curl gnupg2
sudo dpkg -i 1password-latest.deb

Install Qemu

sudo apt install qemu-kvm qemu-system-gui virt-manager libvirt-daemon-system libvirt-clients bridge-utils

Always restart the machine; the service won't run until you restart.