For me, there are 3 meanings for 'domain portfolio'
a) An interface that looks more or less like Brandbucket. I looked at efty and quickly at bodis, and they don't seem to provide anything like that.
I have not seen anything 'ready made' so far. There are probably wordpress plugins that could be adapted, but frankly, I would not use wordpress to expose data from a database (too slow and buggy)
b) A sales page generator that produces a sales/Parking page to inform visitors that your domain is for sale. Both efty and bodis seem to do that well. They do not seem to have a searchable interface for an entire database of domains
c) A back-office system to manage registrations, renewals and track financial aspects such as parking revenue, purchase price, offers received, some history of negotiations (CRM)
I have seen a couple of such systems while browsing, but nothing got me excited.
Most people seem to use excel or rdbms.
I summary, nothing great except sales page generators.
Am I missing something ?