I saw a tweet dated 2011-01-15 saying that Ontopia was alive.
Since Ontopia is a name known to anyone interested in topic maps for more than 30 minutes, I decided to take a look.
It is indeed the Ontopia software for topic maps.
It was disappointing that the homepage, despite being alive! needs updating. Such as not referring to last year’s TMRA conference.
All the additional resources listed are good ones, but the selection is somewhat limited.
One of my goals for 2011 is to develop a bibliography of topic map papers, presentations, etc.
Will have to see how the year goes.