How many of these tablets can you identify?

Here's a photo that includes all the tablet computers that I had in my office last week. How many can you recognize?

Let's start with the left column:

• Samsung Q1 Ultra UMPC (Windows)
• Samsung Galaxy Tab 7.0 (Android)
• HTC EVO View 4G (Android )
• HP Slate 500 (Windows)

Right column:

• Samsung Galaxy Tab 10.1 (Android)
• Apple iPad (iOS)
• HP TouchPad (webOS)

Did you get all those? I only own 3 of these devices. I'm currently testing all the others. Which 3 do I own?