Redland is a set of free software libraries that provide support for the
Resource Description Framework (RDF).
* Modular, object based libraries and APIs for manipulating the RDF graph,
  triples, URIs and Literals.
* Storage for graphs in memory and persistently with Sleepycat/Berkeley DB,
  MySQL 3-5, PostgreSQL, AKT Triplestore, SQLite, files or URIs.
* Support for multiple syntaxes for reading and writing RDF as RDF/XML,
  N-Triples and Turtle Terse RDF Triple Language, RSS and Atom syntaxes via
  the Raptor RDF Parser Toolkit.
* Querying with SPARQL and RDQL using the Rasqal RDF Query Library.
* Data aggregation and recording provenance support with Redland contexts.
* Language Bindings in Perl, PHP, Python and Ruby via the Redland Bindings
  package.
* Command line utility programs rdfproc (RDF), rapper (parsing) and roqet
  (query).
* Portable, fast and with no known memory leaks.

Homepage:
https://librdf.org/
