Overmind is a nice processes manager program to run all your processes together in one terminal tab (uses tmux under the hood).

With a procfile like so:

web: bin/rails s -p 3000
webpacker: bin/webpack-dev-server

start all of them by overmind:

overmind start

then you can connect to the web process by:

overmind connect web

and detach from that when you are done with

ctrl-b-d

Jump between different processes:

ctrl-b-0
ctrl-b-1

Restart a single process

overmind restart

Try it!