LanScout
Scans your local network to list devices by type and vendor and show which IPs are free.
About
A macOS and Windows app drawn with MyGo's native UI. It scans the network your computer is on, lists the devices it finds and identifies their vendor, name and type. An IP map shows used, recently used and free addresses so you can pick a static IP that will not conflict. It needs no admin rights, uploads nothing, and its interface is in Simplified Chinese only.