Although I'm not a big RDF user, I did notice that some SPARQL queries take some time on my machine so I cannot but ask myself how much faster would it run using AllegroGraph ?
Franz Inc does provide a free edition that's limited on how many triples you may store so at some point it should be easy to run some benchmarks.
But -- how much would the AllegroGraph enterprise license really cost to get rid of the triples limitation ?
Like any company that is (or thinks it is) selling an expensive item, the price is not listed, all you are given is a phone number.
I wonder how many customers are they losing this way because people assume the product is way more expensive then it actually is. Because I won't pay 0.5 million dollars to get the enterprise license. Then again, what do I know, it might be 5 mil plus :-)