, but it requires Excel. However then you can make filters and add them into the sims using Transfer Function Designer from FRD Consortium.
. Lots of other useful apps there too.
The one potential drawback for unibox vs WinISD is that it doesn't autocalculate set alignments such as QB3.
Do not trust the databases to be correct if you add them in. Lots of drivers don't match the datasheets, so I suggest using the basic included list and add your own. Simply use an existing driver, and write over the top of it (incl name!) and save it and you'll end up with both, original used as template and new driver. takes 20 secs.
I haven't used WinISD in years.
Another potential program that a lot of people have shifted to is Hornresp.
. It does everything from horns to TL as well as ported and sealed boxes but is a bit harder to get started with and use. It's very accurate and David (the author) has a thread on diyaudio for years where he responds to questions and very regularly adds updates and additional features.
I've been using this since it was first released, but I find Unibox quicker for simple sealed and ported.