O'Reilly logo

Ubuntu Unleashed 2014 Edition: Covering 13.10 and 14.04,Ninth Edition by Paul Hudson, Andrew Hudson, Matthew Helmke

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

HyperGraphDB

HyperGraphDB is another free option that uses the LGPL. It is designed primarily for use with the semantic web, knowledge management, and artificial intelligence projects. In mathematics, the definition of a hypergraph is an extension to the standard graph, allowing an edge to point to more than two nodes. According to the HyperGraphDB website, “HyperGraphDB extends this even further by allowing edges to point to other edges as well and making every node or edge carry an arbitrary value as payload.” HyperGraphDB seems to be focused on the academic side of things, so students might be especially interested in it because HyperGraphDB appears to be trying out some new research ideas.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required