Ask HN: Basecamp-like companies that aren't Basecamp?

We often extol the benefits of working at a company like Basecamp (not a VC-fueled, must-grow-at-all-costs startup). They themselves publish a lot of material about how they work and how they've made their business grow.

One of the downsides of being on the sidelines is that Basecamp, by design, is a small company. Unlike most tech companies, they aren't always hiring (if ever?).

I'm interested in what other tech companies operate in a Basecamp-like way.