NETworkManager is a powerful tool for managing networks and troubleshooting network problems!
You can connect to and manage remote systems via Remote Desktop, PowerShell, PuTTY, TigerVNC or AWS (Systems Manager) Session Manager.
Furthermore it contains features like a WiFi analyzer, IP scanner, port scanner, ping monitor, traceroute, DNS lookup or a LLDP/CDP capture (and many more) to analyze your network and troubleshoot network problems.
You can save your hosts (or networks) in profiles which can be used in the various features. For additional security, the profile file can be encrypted.
And the best part… it’s open source!