If you would like a process management tool with a lot of features, including tmux support, restarting and killing individual processes and advanced configuration, you should take a look at Hivemind's big brother — Overmind!

If a lot of those features seem like overkill for you, especially the tmux integration, you should take a look at Overmind's little sister — Hivemind!

There are some good Procfile-based process management tools, including foreman by David Dollar, which started it all. The problem with most of those tools is that processes you want to manage start to think they are logging their output into a file, and that can lead to all sorts of problems: severe lagging, losing or breaking colored output. Tools can also add vanity information (unneeded timestamps in logs). Overmind was created to fix those problems once and for all.

overmind is basically foreman but done "well"