Modules
Here is a list of all modules:

Data sources. | This module collects all data sources provided by libsdr
Data sinks. | This module collects all data sinks provided by libsdr
Filter and signal processing nodes. | This group collects all filter and signal processing nodes provided by libsdr
Demodulator nodes. | This group collects all demodulation nodes
Data handling nodes. | This group collects all nodes related to data handling