The De:Esser is exactly what it says, and what you think it is.

(Click here for download info)

Limitations of the freebie:

• No Multi-mono support
• No Session-restore functionality (you have to re-set it everytime you open a session)
• No Save-and-restore functionality (can’t save presets)
• No Automation

All of these limited features of the free version are available in the full, paid version, which at the price ($79) is really worth it. It still works great as the demo, though, which is why it is listed here.