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

lc-addrlabels.h	Implementation of local continuations based on the "Labels as values" feature of gcc
lc-switch.h	Implementation of local continuations based on switch() statement
lc.h	Local continuations
oc_acl.h
oc_api.h	Main API of IoTivity-Lite for client and server
oc_assert.h
oc_atomic.h	Platform-specific C implementation of atomic variables
oc_base64.h
oc_buffer.h
oc_buffer_settings.h
oc_build_info.h	Library and OCF version information
oc_certs.h
oc_client_state.h
oc_clock.h
oc_clock_util.h
oc_cloud.h
oc_collection.h
oc_compiler.h	Compiler-specific features
oc_connectivity.h
oc_core_res.h
oc_cred.h
oc_endpoint.h
oc_enums.h
oc_export.h
oc_features.h	Compile time features
oc_helpers.h
oc_introspection.h	Functions for introspection
oc_log.h	OCF public log functions
oc_network_events.h
oc_network_monitor.h
oc_obt.h	Collection of functions to onboard and provision clients and servers
oc_pki.h	OCF public key infrastructure (PKI) functions
oc_poll_loop.h	Default implementation of the main loop using poll
oc_push.h
oc_random.h
oc_rep.h
oc_ri.h
oc_role.h
oc_session_events.h
oc_signal_event_loop.h
oc_sp.h	OCF security profiles
oc_storage.h
oc_store.h
oc_uuid.h	Generate and work with UUIDs as specified in RFC 4122
plgd_dps.h	Device provisioning
plgd_time.h	Time synchronization from an external endpoint
pt-sem.h	Counting semaphores implemented on protothreads
pt.h	Protothreads implementation
server_introspection.dat.h