NetBSD comes with an emulation system which
allows a given port to run programs compiled for other operating systems.
The emulations supported vary depending on
the CPU.
Additionally there is a gallery of
Commercial Software available
specifically for NetBSD.
The NetBSD Packages Collection is the easiest method for installing
hundreds of third party software packages onto a NetBSD system. It
will automatically install any libraries or modules on which a
given package depends.
Most other unix software can be downloaded, compiled, and installed as
on any other unix system. It is not as seamless as software in the
NetBSD packages system, but is generally relatively easy.