All of them--Cisco, Steam games (well over 1000 now), tons of HPC software, Oracle database, Firefox (makes of profit from advertisers, etc--not from users which are basically its product), VMware (ESX is Linux-based).
Red Hat is a billion-dollar company, profiting from Linux.
Trend Software charges a pretty penny for its anti-malware software.
BRU Backup software charges between $499 and $4,999.
Here's a list of proprietary software--all from companies making a profit.
That profit may not necessarily be a cost-to-the-user purchase price, but they are still making a profit from Linux. The business model is just a little different than you may want. A lot of the above software do charge for copies of their product. Some don't.
All of them? Well, okay, I guess if you just want to count the ones that are making a profit and not the failed attempts like Daniels...
The open-source community provides free development and free support. High barriers to overcome for a for-profit operation.
"The business model is just a little different than you may want."
Pays me no nevermind. I made my money in the for-profit world and the open-source community. Now I just enjoy watching the tech titans (and the little fools like Daniel) try to fight back the inevitable. Good times all around!