Some of the included demo applications. "Replicants" as they are called are still a feature as you can see.

This is the default WebPositive browser, which has received a few updates.

Of course one can install Firefox (at least the nightly build), because what operating system can't run Firefox?

There is also now a port of The GIMP for Haiku, which is very convenient.

I am including this screenshot of Audacity to mention that Haiku now also supports USB audio devices (although they can be fiddly as PnP isn't quite working with them yet).

And finally, Haiku includes a port of Wine, the Windows subsystem for Linux.