Here is a list of all documented namespaces with brief descriptions:

[detail level 12]

▼Nompl	Main namespace. Contains everything in this library
Nbase	This namespace contains sampling based planning routines shared by both planning under geometric constraints (geometric) and planning under differential constraints (dynamic)
Ncontrol	This namespace contains sampling based planning routines used by planning under differential constraints
Ngeometric	This namespace contains code that is specific to planning under geometric constraints
Nmachine	This namespace contains routines that read specifications of the machine in use
Nmagic	This namespace includes magic constants used in various places in OMPL
Nmsg	Message namespace. This contains classes needed to output error messages (or logging) from within the library. Message logging can be performed with logging macros
Nmultilevel	This namespace contains datastructures and planners to exploit multilevel abstractions, which you have to specify using a sequence of SpaceInformationPtr (each with their own StateValidityChecker)
Ntime	Namespace containing time datatypes and time operations
Ntools	Includes various tools such as self config, benchmarking, etc