A: Yes, it is freeware. However, many paid scam sites try to resell it. Never pay for it.
Dumpper often works in tandem with "JumpStart," a separate utility that automates the process of connecting to a network once the correct WPS PIN is identified. dumpper v906
A: No. It only supports WEP, WPA, and WPA2. For WPA3, use hashcat with SAE capture. A: Yes, it is freeware