https://support.zoom.us/hc/en-us/articles/201362023-System-requirements-for-Windows-macOS-and-Linux
Supported operating systems
- macOS X with macOS 10.7 or later
- Windows 10
Note: For devices running Windows 10, they must run Windows 10 Home, Pro, or Enterprise. S Mode is not supported.
- Windows 8 or 8.1
- Windows 7
- Windows Vista with SP1 or later
- Windows XP with SP3 or later
Among others including several Linux distros.
I've been using Zoom a lot on my Android tablet during this pandemic. I've chatted with people on various OS/devices and it is seamless. Quite frankly I prefer it to Skype for video chat/conferencing. I may have to dig out an old USB webcam I have somewhere and try it on my old XP laptop.
This may be the only way to video chat on XP since Skype is no longer supported. I also tried Jitsi Meet with XP but couldn't get it to work.