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

NEpetraExt	EpetraExt::BlockCrsMatrix: A class for constructing a distributed block matrix
CBlockAdjacencyGraph
CBlockCrsMatrix
CBlockMultiVector
CBlockUtility
CBlockVector
CCrsGraph_AMD	EpetraExt::CrsGraph_AMD: A transform for Approximate Minimum Degree Reordering using Tim Daley's AMD Algorithm
CCrsGraph_BTF	Block Triangular Factorization (Reordering) of Epetra_CrsGraph
CCrsGraph_MapColoring	Map Coloring of independent columns in a Graph
CCrsGraph_MapColoringIndex
CCrsGraph_MapColoringIndex64
CCrsGraph_Overlap	Given an input Epetra_CrsGraph, a "overlapped" Epetra_CrsGraph is generated including rows associated with off processor contributions
CCrsGraph_SymmRCM	Generates the symmetric RCM reordered version of a Epetra_CrsGraph
CCrsGraph_Transpose	Transform to generate the explicit transpose of a Epetra_CrsGraph
CCrsGraph_View	Generates a sub-block view of a Epetra_CrsGraph
CCrsMatrix_BTF
CCrsMatrix_Dirichlet	Given an input Epetra_LinearProblem, apply given dirichlet conditions
CCrsMatrix_Reindex	Given an Epetra_CrsMatrix, a "reindexed" version is returned based on the new row map
CCrsMatrix_SolverMap	Given an input Epetra_CrsMatrix, the column map is checked for missing indices associated with the local rows
CCrsMatrix_SubCopy	Generates a sub-block view of a Epetra_CrsMatrix
CCrsMatrix_View	Generates a sub-block view of a Epetra_CrsMatrix
CCrsMatrixStruct
CCrsWrapper
CCrsWrapper_Epetra_CrsMatrix
CCrsWrapper_GraphBuilder
CDiagonalQuadraticResponseOnlyModelEvaluator	A simple quadratic parallel response-only model evaluator
CDiagonalTransientModel	Simple transient diagonal model for an implicit or explicit ODE
CDirectory	Distributed Directory Tool
CDistArray	DistArray<T>: A class to store row-oriented multivectors of type T
CEpetra_Timed_Operator	Class allows for timing the action and inverse action of an Epetra_Opetator
CEpetra_Vector_Handle
CEpetraExt_MatlabEngine	A class which provides data and command access to Matlab from Epetra
CException
CHandle
CHash
CHash< std::string >
CHDF5	Class HDF5: A class for storing Epetra objects in parallel binary files
CInArgsGetterSetter_p	Class that gets and sets p(l) in an InArgs object
CInArgsGetterSetter_x	Class that gets and sets x in an InArgs object
CInArgsGetterSetter_x_dot	Class that gets and sets x_dot in an InArgs object
CInArgsGetterSetter_x_dotdot	Class that gets and sets x_dotdot in an InArgs object
CInPlaceTransform
CLightweightCrsMatrix
CLightweightMap
CLightweightMapData
CLinearProblem_BlockJacobi
CLinearProblem_BTF
CLinearProblem_CrsSingletonFilter	Epetra_CrsSingletonFilter: A class for explicitly eliminating matrix rows and columns
CLinearProblem_GraphTrans	EpetraExt::LinearProblem_GraphTrans: Adaptation of a Epetra_CrsGraph Transform to a Epetra_LinearProblem Transform
CLinearProblem_MatrixTrans	Adaptation of an Epetra_CrsMatrix Transform to a Epetra_LinearProblem Transform
CLinearProblem_Reindex	Given and input Epetra_LinearProblem, a "reindexed" version will be returned using the given NewRowMap
CLinearProblem_Reindex2	Given and input Epetra_LinearProblem, a "reindexed" version will be returned using the given NewRowMap
CLinearProblem_Scale	Given an input Epetra_LinearProblem, recursive, left and right scaling are performed
CLinearProblem_SolverMap	Constructs a LinearProblem with a "fixed" Column Map for the CrsMatrix
CLinearProblem_StaticCondensation
CMatrixMatrix	Collection of matrix-matrix operations
CMigrate	Data Migration Utility used by EpetraExt::Directory
CMigrate1
CModelEvaluator	Base interface for evaluating a stateless "model"
CInArgs
CEvaluation
CDerivativeSupport
CDerivativeProperties
CDerivativeMultiVector	Simple aggregate class for a derivative object represented as a column-wise multi-vector or its transpose as a row-wise multi-vector
CDerivative	Simple aggregate class that stores a derivative object as a general linear operator or as a multi-vector
CPreconditioner	Simple aggregate struct that stores a preconditioner as an Epetra_Operator and a bool, about whether it is inverted or not
CSGDerivativeMultiVector	Simple aggregate class for a derivative object represented as a column-wise multi-vector or its transpose as a row-wise multi-vector
CSGDerivative	Simple aggregate class that stores a derivative object as a general linear operator or as a multi-vector
CMPDerivativeMultiVector	Simple aggregate class for a derivative object represented as a column-wise multi-vector or its transpose as a row-wise multi-vector
CMPDerivative	Simple aggregate class that stores a derivative object as a general linear operator or as a multi-vector
COutArgs
CInArgsSetup
COutArgsSetup
CMultiComm
CMultiMpiComm
CMultiPointModelEvaluator
CMultiSerialComm
CMultiVector_Reindex	Given an input Epetra_MultiVector, a "reindexed" view is returned
CMultiVector_View	Generates a sub-block view of a Epetra_MultiVector
COutArgsGetterSetter_f	Class that gets and sets f in an OutArgs object
COutArgsGetterSetter_g	Class that gets and sets g(j) in an OutArgs object
CPackTraits	Traits for packing and unpacking of data into char buffers for communication
CPackTraits< std::string >	Full specialization of PackTraits for std::string
CPackTraits< std::vector< T > >	Partial specialization of PackTraits for std::vector<> containing a primitive type
CPerm_traits	Define some traits to make it easier to deal with template-parameters which are objects to be permuted
CPerm_traits< Epetra_CrsGraph >	A specialization of Perm_traits for the specific type Epetra_CrsGraph
CPerm_traits< Epetra_CrsMatrix >	A specialization of Perm_traits for the specific type Epetra_CrsMatrix
CPerm_traits< Epetra_MultiVector >	A specialization of Perm_traits for the specific type Epetra_MultiVector
CPermutation
CPermutation64
CProductOperator	Implements Epetra_Operator as a product of one or more Epetra_Operator objects
CRemoteOnlyImport
CRowMatrix_Transpose	Transform to form the explicit transpose of a Epetra_RowMatrix
CSameTypeTransform
CStructuralSameTypeTransform
CStructuralTransform
CTCrsGraph_MapColoringIndex	Generates a std::vector of Epetra_IntVector's to be used to map perturbation contributions to a CrsGraph/CrsMatrix from a perturbed vector
CTPermutation	Permutation stores and describes a permutation matrix P
CTransform	Base Class for all Epetra Transform Operators
CTransform_Composite	Composition Class for Epetra Transform SameType Operators
CVector_Dirichlet	Given an input Epetra_Vector, apply given dirichlet conditions
CViewTransform
CXMLReader	Class XMLReader: A class for reading Epetra objects stored in XML files
CXMLWriter	Class XMLWriter: A class for writing Trilinos objects to XML files
NGenSQP
CDataPool	Provides the interface to a generic data pool
CVector	Provides the interface to generic abstract vector libraries
CYUEpetraVector	The GenSQP::Vector / (y,u) Epetra_MultiVector adapter class
NGLpApp
CAdvDiffReactOptModel	PDE-constrained inverse problem based on a 2D discretization of a diffusion/reaction system
CAdvDiffReactOptModelCreator	A utility class for creating an AdvDiffReactOptModelCreator/tt> object by reading from the command-line
CGLpYUEpetraDataPool
CUsr_Par
NStokhos
COrthogPolyBasis
CQuadrature
CStandardStorage
COrthogPolyExpansion
NTeuchos
CPolynomialTraits< Epetra_Vector >	Specilization of Teuchos::PolynomialTraits for Epetra vectors
CEpetra_PETScAIJMatrix	Epetra_PETScAIJMatrix: A class for constructing and using real-valued sparse compressed row matrices
CEpetraExt_BlockDiagMatrix	EpetraExt_BlockDiagMatrix: A class for storing distributed block matrices
CEpetraExt_HypreIJMatrix
CEpetraExt_PointToBlockDiagPermute	EpetraExt_PointToBlockDiagPermute: A class for managing point-to-block-diagonal permutations
CEpetraModelEval2DSim	Simple example ModelEvaluator subclass for a 2x2 set of parameterized nonlinear equations
CEpetraModelEval4DOpt	A simple serial example model which includes a parameter subvector and a response function that can be used to define an optimization problem
CEpetraMultiPointModelEval4DOpt	A simple serial example model which includes a parameter subvector and a response function that can be used to define an optimization problem
CFindDataset_t