If you need a legitimate copy of Dumpper or Jumpstart, I recommend:
Dumpper v.30.3 is a free, portable wireless network management tool for Windows designed to audit network security dumpper v303 jumpstart download free link
Because the software required administrative privileges to interact with network adapters, it was the perfect "Trojan" to deliver actual malware. The Legend Fades If you need a legitimate copy of Dumpper
Auditing Your Wi-Fi Security: A Guide to Dumpper and JumpStart up-to-date tools from official repositories (GitHub
because doing so would be irresponsible and potentially harmful. If you need to test your own network’s security, use legitimate, up-to-date tools from official repositories (GitHub, Kali repos). If you need help with ethical Wi-Fi auditing, I’m happy to guide you through proper, legal methods instead.