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    <p>Hey, Iaalto, I'm the author of the survey article that you mentioned. I've been thinking about doing a new survey.</p> <p>A little has changed since I did the original survey, but not much. Here are a couple of things to consider:</p> <ol> <li>ActiveRDF seems to have gone the route of being a JRuby specific library. Several of their adapters are for Java only libraries. Not necessarily a problem, but something to be aware of.</li> <li>Reddy only has a memory based graph. Again, not necessarily a problem. I wouldn't discount Reddy for that (premature optimization), but I also wouldn't dream of storing billions of triples.</li> <li>I recently found a new set of Ruby bindings for Redland called <a href="http://www.deveiate.org/projects/Redleaf" rel="noreferrer">RedLeaf</a>. Not sure how mature it is, but it looks like Michael has been working on it for about a year. I hadn't heard of it until recently because it is off-grid (no RubyForge or GitHub project).</li> <li>I created a project on GitHub called RubyRDF (github.com/pjstadig/rubyrdf/tree/master). It doesn't have a ton of documentation, but it is mostly functional. It has a Sesame compatible adapter with support for transactions. I still have some ideas for future direction, and making it more feature complete, but not a lot of impetus to work on it. I'd welcome any contributions.</li> </ol> <p><strong>Bottom line:</strong> If JRuby is not a problem for you, then go with ActiveRDF, it is the most complete and mature. If memory based graph is not a problem, then the next most mature is probably Reddy.</p>
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    1. COThat's great info. Thanks pjstadig!
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