What are some free RDP services out there?

Guacamole Apache is pretty awesome

Set up a vpn on ur router and use rdp

I use rdp and tailscale. Best connection ever. Way better than vnc 3rd party connections or anydesk/teamviewer. If windows is the system at home, use rdp through tailscale or other vpn option

Meshcentral

I like RDC Man for several rdp sessions.

I use mRemoteNG personally and professionally and always recommend it. Lets you store multiple types of connections, RDP, VNC, SSH, HTTP(S), etc. and you can open each window in tabs to have multiple open.

Just use RDP over Tailscale, done and free.