A high performance, open source, data replication engine for MySQL
Tungsten Replicator is a high performance, free and open source replication engine that supports a variety of extractor and applier modules. Data can be extracted from MySQL, Oracle and Amazon RDS, and applied to numerous transactional stores and datawarehouse stores (MySQL, Oracle, and Amazon RDS; NoSQL stores such as MongoDB; Vertica, Hadoop, and Amazon RDS). Tungsten Replicator helps technically focused users solve host of problems and offers features that surpass those of most other open source replicators. During replication, Tungsten Replication allows data to be exchanged between different databases and database versions, information can be filtered and modified, and deployment can be between on-premise or cloud-based databases. It supports parallel replication and advanced topologies such as fan-in and multi-master. It can also be used efficiently in cross-site deployments.
Sedna is a native full-featured XML database management system.
C++ Semantic Web Objects library: Turtle parser. SPARQL compiler. Rule-based query transformer. SQL serializer. Query federater Tutorials 2010: http://www.w3.org/2010/Talks/1208-egp-swobjects/ 2011: https://sites.google.com/site/swobjectstutorial/documentation
iMeMex is a dataspace management system. iMeMex is a research prototype. The package also provides several useful components for research such as external sorting, B+-trees, inverted indexes, content converters, query operators, and graph indexes.