If anyone's interested in reading about cooperativism in the tech world, a starting point is http://techworker.coop/

I can't think of many tech companies that are coops. Plausible Labs, developers of VoodooPad (https://plausible.coop/voodoopad/), is the one that springs to mind first. Most of the other coops I know of are small design/development studios.

Can anyone else name any tech coops?