Class List
Here are the classes, structs, unions and interfaces with brief descriptions:
[detail level 1234]
 NARDUINOJSON_NAMESPACE
 NCrypto
 NFSTR
 NNanoTime
 NOtaUpgrade
 NPolledTimer
 NProfiling
 NSsl
 CAccessPointClassAccess point class
 Cargument_type
 Cargument_type< T(U)>
 CAtClientClass that facilitates the communication with an AT device
 CAtCommand
 CAuthAdapter
 CAutoDeleteTimerAuto-delete callback timer class
 CBase64OutputStreamBase64 Stream
 CBasicRatioA basic rational fraction, constexpr-compatible
 CBeaconInfoDecoded Wifi beacon (Access Point) information
 CBeaconInfoListFor applications to use to manage list of unique beacons
 CBssInfo
 CCallbackTimerCallback timer class template
 CCallbackTimerApiCallback timer API class template
 CChunkedStreamData chunked stream class
 CCircularBufferCircular stream class
 CClientInfoDecoded Wifi client information
 CClientInfoListFor applications to use to manage list of unique clients
 CCommandDelegateCommand delegate class
 CCommandExecutor
 CCommandHandlerCommand handler class
 CCommandOutput
 CCountable
 CCpuCycleClockClock implementation for CPU cycle times
 Ccrypto_blake2s_context_t
 Ccrypto_md5_context_t
 Ccrypto_sha1_context_t
 Ccrypto_sha224_context_t
 Ccrypto_sha384_context_t
 CCStringArrayClass to manage a double null-terminated list of strings, such as "one\0two\0three\0"
 CDateTimeDate and time class
 CDebugClassProvides debug output to stream (e.g. Serial) or delegate function handler
 CDebugOuputOptionsStructure for debug options
 CDelegate
 CDelegate< ReturnType(ParamTypes...)>Delegate class
 CDelegateCallbackTimerClass template adding delegate callback method support to the basic CallbackTimer template
 CDigitalHooksClass to customise behaviour for digital functions
 CDisplay
 CDnsHeader
 CDnsServer
 CEndlessMemoryStreamMemory stream that stores unlimited number of bytes
 CEspDigitalPinESP GPIO pin configuration
 Cfalse_type
 CFIFO
 CFileStreamFile stream class
 CFILO
 CFtpDataFileList
 CFtpDataRetrieve
 CFtpDataStore
 CFtpDataStream
 CFtpServer
 CFtpServerConnection
 Cgdb_stat_tGDB uses a specific version of the stat structure, 64 bytes in size
 Cgdb_state_t
 Cgdb_timeval_tGDB uses a specific version of the timeval structure, 12 bytes in size (manual says 8, which is wrong)
 CGdbFileStreamGDB File stream class to provide access to host files whilst running under debugger
 CGdbPacket
 CGdbSyscallInfoGDB Syscall request information
 CHardwarePWMHardware pulse width modulation
 CHardwareSerialHardware serial class
 CHashMapHashMap class template
 CHexDump
 CHostFileStreamHost File stream class
 CHttpBasicAuth
 CHttpClient
 CHttpClientConnection
 CHttpConnectionProvides http base used for client and server connections
 CHttpDigestAuth
 CHttpHeaderBuilderRe-assembles headers from fragments via onHeaderField / onHeaderValue callbacks
 CHttpHeadersEncapsulates a set of HTTP header information
 CHttpMultipartResourceHttpResource that allows handling of HTTP file upload
 CHttpParams
 CHttpPartResultMultipart stream class
 CHttpRequest
 CHttpResource
 CHttpResourceTreeClass to map URL paths to classes which handle them
 CHttpResponse
 CHttpServer
 CHttpServerConnection
 CHttpServerSettings
 Ci2s_buffer_info_tDefines a buffer with available content
 Ci2s_buffer_stat_tContains I2S buffer status information
 Ci2s_config_tI2S configuration parameters
 Ci2s_module_config_tI2S module configuration (TX or RX)
 Ci2s_sample_tI2S sample
 CIDataSourceStreamBase class for data source stream
 CIpAddressA class to make it easier to handle and pass around IP addresses
 CISystemReadyHandlerInterface class implented by classes to support on-ready callback
 CJsonObjectStreamJsonObject stream class
 CLimitedMemoryStreamMemory stream that stores limited number of bytes Once the limit is reached the stream will discard incoming bytes on write
 CLineBufferClass to enable buffering of a single line of text, with simple editing
 CMacAddressA network hardware (MAC) address
 CMailMessage
 CMemoryDataStream
 CMqttClient
 CMqttPayloadParserState
 CMuldivLimitsObtain limits for a muldiv template calculation
 CMultipartParserWrapper for multipart-parser engine (c code)
 CMultipartStream
 CMultiStream
 CNetUtils
 CNtpClientNTP client class
 CObjectMapImplementation of a HashMap for owned objects, i.e. anything created with new()
 CObjectQueueFIFO for objects
 COsMessageInterceptorClass to handle interception of OS messages
 COsTimer64ApiClass template implementing an extended OS Timer with 64-bit microsecond times and delegate callback support
 COsTimerApiImplements common system callback timer API
 COtaFileHeader
 COtaRomHeader
 CPrintProvides formatted output to stream
 CPrintable
 Cpwm_param
 CQuotedPrintableOutputStreamQuoted-Printable Stream
 CRatioClass to simplify calculations of finite rationals at runtime
 Crboot_configStructure containing rBoot configuration
 Crboot_write_statusStructure defining flash write status
 CReadWriteStreamBase class for read/write stream
 Crom_header
 Crom_header_new
 CRtcClass
 Csection_header
 CSmartConfigEventInfoSmart Config callback information
 CSmtpClient
 CSPIBase
 CSPIClass
 Cspiffs_config
 Cspiffs_DIR
 Cspiffs_dirent
 Cspiffs_fd
 CSPIFFS_PACKED
 Cspiffs_stat
 Cspiffs_t
 CSPISettings
 CSPISoft
 CStationClassWiFi station class
 CSTORE_TYPEDEF_ATTRSPI Flash memory information block. Stored at the beginning of flash memory
 CStreamBase Stream class
 CStreamChain
 CStreamTransformer
 CStringThe String class
 CStringSumHelper
 CSystemClassSystem class
 CSystemClockClass
 CTcpClient
 CTcpConnection
 CTcpServer
 CTelnetServer
 CTemplateFileStreamTemplate File stream class
 CTemplateStream
 CTemplateVariablesTemplate variable (hash map) class
 Ctest_res_s
 Ctest_s
 Ctfile
 Ctfile_conf
 CTimerCallback timer class
 CTimer1ApiClass template for Timer1 API
 CTimer1ClockClock implementation for Hardware Timer 1
 CTimer2ClockClock implementation for Hardware Timer 2
 Ctrue_type
 CTwoWire
 Cuart_
 Cuart_config
 CUdpConnection
 CUrlClass to manage URL instance
 CUrlencodedOutputStreamUrlEncoded Stream
 CVectorVector class template
 CWDTClass
 CWebsocketClientWebsocket Client
 CWebsocketConnection
 CWebsocketResource
 CWifiEventsClassWiFi events class
 CWifiSniffer
 CWsCommandHandlerResource
 CWsFrameInfo