Right now, unless you wish to compile it, list is short:

- Angelfish available from KDE Flatpak repo, org.kde.mobile.angelfish; developed at https://invent.kde.org/jbbgameich/plasma-angelfish

- Maybe Matrix client Spectral, https://gitlab.com/spectral-im/spectral

We are limited to QML apps due to QtWayland 5.4 that we have and which is used in the compositor run by flatpak-runner. On top of that, flatpak-runner compositor is in particularly bad and assumes that it has only one window to show. Which does cause some issues. Depending on Qt update on SFOS, we will either have to work with QtWayland 5.4 or just wait with this limitation for now.

I'm mainly looking into improving the browser, Spectral has issues with touch controlled devices (issues filed). Browser, as distributed now, is slow. Bugfix is known and already applied, but may require further investigation on my side.

As for other software, much is written for desktop. Gtk apps are no go for now (too old QtWayland compositor).

In sum, right now, you have to get hands dirty to get software that you want and be ready to fix it. Shouldn't be a problem, right?

Did you check that your device has newer libhybris? libhybris-0.0.5.34 is required.