In reply to Robin.

If we go by company name callin of "Open Source vs. Proprietary", we could easily continue with: Google (Android, Chrome OS, Chrome, Chromium), Canonical (Ubuntu), Suse Linux GmbH (Suse), Redhat (RHLE / Fedora), Oracle (Virtualbox, MySQL) and so on ..

Wikipedia as a nice list, for picking other names: https://en.wikipedia.org/wiki/Category:Free_software_companies

cu, w0lf.