What are some companies that allow work from *anywhere*?

I.E., I'm on the go a lot. I have a laptop and consistent high speed internet access.

What I do not have is the ability to plop myself down at one spot consistently and use a wired internet connection that is the same connection every time.

I'm looking for work where I can just "be wherever I am" open up my laptop and go to work.

I know upwork is an option. But I thought I'd ask this sub about others?

Is appen like that? From their description, I cannot tell. Others?