HyperGraphDB is a general purpose, extensible, portable, distributed, embeddable, open-source
data storage mechanism. While a (hyper)graph database designed mostly for knowledge representation, AI
and semantic web projects, it can also be used as an embedded object-oriented
database for Java projects of all sizes.
The system is reliable and in production use is
several projects, including a search engine and our own Seco scripting IDE
where most of the runtime environment is automatically saved as a hypergraph.
||Java 5+, *nix or Windows
www.hypergraphdb.org is now the official home of HyperGraphDB.
YourKit is kindly supporting open source projects with its full-featured Java Profiler.
YourKit, LLC is creator of innovative and intelligent tools for profiling
Java and .NET applications. Take a look at YourKit's leading software products:
YourKit Java Profiler and YourKit .NET Profiler.