Ad hoc live server status
Multiple ad hoc servers have some kind of live status page, where you can see what's being played. Future versions of PPSSPP will be able to display this information in the server browser.
There are currently two standards, but PPSSPP will support data.json going forward.
data.json
Examples:
http://psi-hate.com:27315/data.json
status.xml
Examples:
https://www.socom.cc/status.xml
Debug status
There's also: http://server:27314/data_debug, which shows internal state.
For server owners
If you want your data.json page to be shown in ppsspp, contact me on [email protected] with "data.json" in the subject, and let me know the full URL that will display the data.json. Ideally this will be something like yourhost/data.json but I'll accept other URLs.
To enable data.json on your server, see the Deploying section here - that's the Node.js-based status page mentioned.