QGIS API Documentation  2.18.21-Las Palmas (9fba24a)
Modules
Here is a list of all modules:
 core libraryThe CORE library contains all basic GIS functionality
 gui libraryThe GUI library is build on top of the CORE library and adds reusable GUI widgets
 analysis libraryThe ANALYSIS library is built on top of CORE library and provides high level tools for carrying out spatial analysis on vector and raster data
 network analysis libraryThe NETWORK_ANALYSIS library provides high level tools for building network topologies and analysing them
 server libraryThe SERVER library is built on top of the CORE library and adds map server components to QGIS
 plugin classesContains classes related to implementation of QGIS plugins