Suspend Session is a simple program that suspends your current session after 3 seconds and leaving all apps running using fast user switch technology built in, and bringing you at login screen where your password is required to reactivate it.
This is a script that performs a fast user switch (with confirmation). From the description, I was thinking that Suspend Session was more like Relaunch.
Can I please point out that for Mac apps the "OK" button goes on the far right. This isn't Windows. Plus, it would be more normal to label it "Suspend."