Here are the classes, structs, unions and interfaces with brief descriptions:

Nzipios
CBackBuffer	A BackBuffer instance is useful for reading the last part of a file in an efficient manner, when it is not known exactly how far back (towards the front!) to go, to find the start of the desired data block
CBasicEntry	BasicEntry is a FileEntry that is suitable as a base class for basic entries, that e.g
CCollectionCollection	CollectionCollection is a FileCollection that consists of an arbitrary number of FileCollections
CDataDescriptor	A struct containing fields for the entries in a zip file data descriptor, that trails the compressed data in files that were created by streaming, ie where the zip compressor cannot seek back to the local header and store the data
CDeflateOutputStreambuf	DeflateOutputStreambuf is an output stream filter, that deflates the data that is written to it before it passes it on to the output stream it is attached to
CDirectoryCollection	DirectoryCollection is a FileCollection that obtains its entries from a directory
CEndOfCentralDirectory	The end of the Central directory structure
CException	Basic exception
CFCollException	An FCollException is used to signal a problem with a FileCollection
CFileCollection	FileCollection is an abstract baseclass that represents a collection of files
CFileEntry	A FileEntry represents an entry in a FileCollection
CMatchName	Function object to be used with the STL find_if algorithm to find a FileEntry in a container, which name (as obtained with FileEntry::getName()) is identical to the name specified in the MatchName constructor
CMatchFileName	Function object to be used with the STL find_if algorithm to find a FileEntry in a container, which name (as obtained with FileEntry::getFileName()) is identical to the name specified in the MatchName constructor
CFilePath	FilePath represents a path to a file or directory name
CFilterInputStreambuf	An input streambuf filter is a streambuf that filters the input it gets from the streambuf it is attached to
CFilterOutputStreambuf	A FilterOutputStreambuf is a streambuf that filters the data that is written to it before it passes it on to the output streambuf it is connected to
CGZIPOutputStream	GZIPOutputStream is an ostream that writes the output to a gz file
CGZIPOutputStreambuf	GZIPOutputStreambuf is a zip output streambuf filter
CInflateInputStreambuf	InflateInputStreambuf is an input stream filter, that inflates the input from the attached input stream
CInvalidStateException	An object member function may throw this exception, if the operation it normally performs is inappropriate or impossible to perform because of the current state of the object
CIOException	An IOException is used to signal an I/O error
Costream
COutputStringStream	OutputStringStream is typedefed to ostringstream if sstream is part of the standard library (unless Zipios++ has been explicitly configured not to use it)
CReferenceCount	ReferenceCount is useful to ensure proper handling of the reference count for (objects of) classes handled through a SimpleSmartPointer
CSimpleSmartPointer	SimpleSmartPointer is a simple reference counting smart pointer template
CTestFiles
Cvector
CVirtualSeeker	VirtualSeeker is a simple class that keeps track of a set of specified 'virtual' file endings that mark a subset of a real file
CZipCDirEntry	Specialization of ZipLocalEntry, that add fields for storing the extra information, that is only present in the entries in the zip central directory and not in the local entry headers
CZipFile	ZipFile is a FileCollection, where the files are stored in a .zip file
CZipFileTest
CZipInputStream	ZipInputStream is an istream that gets it's input from a zip file
CZipInputStreambuf	ZipInputStreambuf is a zip input streambuf filter
CZipInputStreamTest
CZipLocalEntry	A concrete implementation of the abstract FileEntry base class for ZipFile entries, specifically for representing the information present in the local headers of file entries in a zip file
CZipOutputStream	ZipOutputStream is an ostream that writes the output to a zip file
CZipOutputStreambuf	ZipOutputStreambuf is a zip output streambuf filter
CZipOutputStreamTest
Costream