If Newtek Professional 2.5 is specifically related to an older product line:
High-speed, multi-threaded scanning of Windows-based networks to retrieve detailed hardware and software data. Key Features: SimulScan Technology: newt professional 2.5 license key
Higher-tier licenses for larger organizations, often including "Lifetime Upgrades". $295 - $2,000+ NEWT Professional Network Inventory - Komodo Labs If Newtek Professional 2