GSN is a middleware (extendible software infrastructure) for rapid deployment and integration of heterogeneous wireless sensor networks. It is tested with Mica2, Mica2Dot, TinyNodes, Wisenode ,Wired & Wireless cameras, several RFID readers,...
Dataman is a fully multi-threaded database server and client API libraries in C, C++, Java, and a PHP module has now been added as well. This is a 'direct access' database, not a relational one. It emulates the verbs of the EDITOR language.
MXQuery is a low-footprint implementation of XQuery 1.0, XQuery Update 1.0, XQuery Fulltext 1.0 and XQuery Scripting 1.0 as well as a subset of XQuery 1.1 (windowing, try/catch). It provides extensions to do data stream processing/CEP and SOAP/REST
Digital Library (DigLib) is special database system oriented to digital objects. Digital objects are any documents in digital form. For example text, software, audio, video, ... Digital Library store a metadata and fulltext (text/binary) of digital object
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zTable is a mini-DBMS written in Java. It has 2 parts: a back-end DBMS engine and a front-end Eclipse editor plugin. The engine can be embeded in any Java application. The Eclipse editor can be useful as a free DBMS for end-users.