GEOS provides a spatial object model and fundamental geometric functions. It implements the geometry model defined in the OpenGIS Consortium Simple Features Specification for SQL. Functions provided include:

XML/Ada is a set of modules that provide a simple manipulation of XML streams. It supports the whole XML 1.0 specifications, and can parse any file that follows this standard (including the contents of the DTD). It also provides support for a number of other standard associated with XML, like SAX, DOM, and XML Schemas. In addition, it includes a module to manipulate Unicode streams, since this is required by the XML standard.

AngelScript features static typing, object handles (similar to C++ pointers but garbage collected via reference counting), object- orientation, single inheritance, multiple inheritance with interfaces. Allows operators to be registered and overloaded. AngelScript can be used with any C++ IDE, such as Netbeans, Geany, and Eclipse.

Library of blocks that implement UDP and TCP source and sink blocks supporting both IPv4 and IPv6. Part of the main gnuradio build.

Top level component library. Defines core blocks. Handles settings for logging, performance counters, and control port. Part of the main gnuradio build.

Soapy hardware drivers using the SoapySDR driver framework. Part of the main gnuradio build.