Healthier alternative to Better Than Bouillon?

I'm constantly using the Better Than Bouillon vegetable base when I need vegetable broth, because it's so convenient, space efficient, and it keeps longer than those cartons of vegetable broth.

But, I recently looked at the ingredients and was a bit put off, as I've been trying to eat healthier (less salt, sugar, and processed ingredients.)

Does anyone have any recommendations for something with a similar level of convenience and shelf life?