Hello,
Just installed Leste on N900 and glad to inform that this little piece of hardware is doing 2023 things...
I have installed snapclient and works.
I have tried squeezelite and works.
I have installed rtl_433 but no OTG so no adapter found.

Best regards

PSPP (gnu version from SPSS data analysis program) works fine with Pinephone Keyboard.

easy install:
sudo apt-get install pspp

As hard to use as original SPSS, but although menus are small you can use them with touch screen, so maybe can use also with Pinephone (without keyboard). Should work with Droid4 too, maybe even with N900.

Some DOS users might want to know that Devuan version of ARJ is also working with Maemo Leste.

easy install:
sudo apt-get install arj

And it works also with multi volumes, so old floppy size option -v1440 is possible. Remember that original DOS arj volume max is 1 GB. But I didn't find the limit of whole package. I tested 4.7 GB file (at least it is over 32-bit limit) with option -v1G. So moving big files over FAT32 formatted memorystick is possible with arj.

Surprisingly Telegram-desktop (from devuan chimaera repo) works quite well on N900: messaging, calling, sending and receiving files work.
The app is slow to start (around a minute), swapping 100MB of stuff, and then works well. Ui is quite smooth.
Some non critical settings crash the app btw (it works finally with a longer click)
CPU usage is quite low and RAM usage is acceptable on N900.
With last Leste updates, that's perfectly usable without overclock.