A free competitor to Franz's AllegroGraph by Kevin Raison. At the moment, this code is in a state of rapid flux. Please don't expect it to behave consistently from one check-in to another. The goal is to build a fast, robust, distributed graph database with optional RDF semantics built-in. The primary query language is Prolog (based on PAIP), but I have plans to add Javascript and maybe Sparql at a later date. At the moment, the underlying storage engine relies on Kyoto Cabinet; this is going to change very soon. I am working on a native SBCL memory mapped persistence library that will give me some variation on btrees and hashes. When this is complete, the current performance issues with Vivace Graph should disappear. The code checked-in as of 2010/09/30 works fairly well, but should be considered alpha quality. In order to get it working, you will need the following: SBCL 1.0.42 or higher: http://www.sbcl.org/platform-table.html Kyoto Cabinet 1.2.14: http://fallabs.com/kyotocabinet/pkg/kyotocabinet-1.2.14.tar.gz cl-skip-list: http://www.cliki.net/cl-skip-list cl-kyoto-cabinet: http://github.com/kraison/cl-kyoto-cabinet kyoto-persistence: http://github.com/kraison/kyoto-persistence bordeaux-threads: http://common-lisp.net/project/bordeaux-threads/ usocket: http://common-lisp.net/project/usocket/ hunchentoot: http://weitz.de/hunchentoot/ cl-json: http://common-lisp.net/project/cl-json/ uuid: http://www.dardoria.net/software/uuid.html cl-fad: http://weitz.de/cl-fad/ ieee-floats: http://common-lisp.net/project/ieee-floats/ parse-number: http://www.cliki.net/PARSE-NUMBER cffi: http://common-lisp.net/project/cffi/ local-time: http://common-lisp.net/project/local-time/ date-calc: http://common-lisp.net/project/cl-date-calc/ py-configparser: http://common-lisp.net/project/py-configparser/ js: http://github.com/akapav/js split-sequence: http://www.cliki.net/SPLIT-SEQUENCE To get you started: (asdf:oos 'asdf:load-op 'vivace-graph) (in-package #:vivace-graph) (make-new-graph :name "test graph" :location "/var/tmp") (<- ("is-a" "Kevin" "human")) (<- ("is-a" "Joe" "human")) (<- ("is-a" "Fido" "dog")) (<- ("likes" "Kevin" "Fido")) (<- ("likes" "Joe" ?x) ("is-a" ?y "dog") ("likes" ?x ?y)) (select (?x ?y) ("likes" ?x ?y)) (get-triples :s "Kevin") (get-triples :p "is-a") (shutdown-graph *graph*)