This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 12]

Casync_task	Handle for asynchronous tasks
Cbuffer	Simple buffer where data can be appended at the end and consumed at the front. Think of it as a deque with contiguous storage
Ccondition	Waitable condition variable
Cdatetime	Represents a point of time in wallclock, tracking the timestamps accuracy/precision
Cduration	The `duration` class represents a time interval in milliseconds
▼Cevent_base	Common base class for all events
Csimple_event< UniqueType, Values >	This is the recommended event class
Cevent_handler	Simple handler for asynchronous event processing
Cfile	Lean class for file access
Cless_insensitive_ascii	Comparator to be used for std::map for case-insentitive keys
Clocal_filesys	This class can be used to enumerate the contents of local directories and to query the metadata of files
Cmonotonic_clock	A monotonic clock (aka steady clock) is independent from walltime
Cmutex	Lean replacement for std::(recursive_)mutex
Cprocess	Manages an asynchronous process with redirected IO
Cquery_string	Class for parsing a URI's query string
Crecursive_remove	Recursively deletes directories
Cscoped_lock	A simple scoped lock
Cshared_optional< T, Init >	Shared_optional is like std::shared_ptr but with relational operators acting like C++17's std::optional
Csparse_optional< T >	Similar to C++17's std::optional, but stores the data in dynamic memory
▼Cthread	Spawns and represents a new thread of execution
Cevent_loop	A threaded event loop that supports sending events and timers
Cthread_pool	A dumb thread-pool for asynchronous tasks
Curi	Used to decompose URIs into their individual components