Here is a list of all files with brief descriptions:

[detail level 12]

src
Belos_Details_EBelosSolverType.cpp
Belos_Details_EBelosSolverType.hpp	Declaration of alias functions for solver names
Belos_Details_LinearSolver.hpp	Implementation of Trilinos::Details::LinearSolver
Belos_Details_LinearSolverFactory.hpp	Implementation of Trilinos::Details::LinearSolverFactory
Belos_Details_registerLinearSolverFactory.cpp
Belos_Details_registerLinearSolverFactory.hpp	Declaration of Belos::Details::registerLinearSolverFactory
Belos_Details_registerSolverFactory.cpp
Belos_Details_registerSolverFactory.hpp
BelosBiCGStabIter.hpp	Belos concrete class for performing the pseudo-block BiCGStab iteration
BelosBiCGStabSolMgr.hpp	The Belos::BiCGStabSolMgr provides a solver manager for the BiCGStab linear solver
BelosBlockCGIter.hpp	Belos concrete class for performing the block conjugate-gradient (CG) iteration
BelosBlockCGSolMgr.hpp	The Belos::BlockCGSolMgr provides a solver manager for the BlockCG linear solver
BelosBlockFGmresIter.hpp	Belos concrete class for performing the block, flexible GMRES iteration
BelosBlockGCRODRIter.hpp	Belos concrete class for performing the block GCRO-DR (block GMRES with recycling) iteration
BelosBlockGCRODRSolMgr.hpp	A solver manager for the Block GCRO-DR (Block Recycling GMRES) linear solver
BelosBlockGmresIter.hpp	Belos concrete class for performing the block GMRES iteration
BelosBlockGmresSolMgr.hpp	The Belos::BlockGmresSolMgr provides a solver manager for the BlockGmres linear solver
BelosCGIter.hpp	Belos concrete class for performing the conjugate-gradient (CG) iteration
BelosCGIteration.hpp	Pure virtual base class which augments the basic interface for a conjugate gradient linear solver iteration
BelosCGSingleRedIter.hpp	Belos concrete class for performing a single-reduction conjugate-gradient (CG) iteration
BelosConfigDefs.hpp	Belos header file which uses auto-configuration information to include necessary C++ headers
BelosCustomSolverFactory.hpp
BelosDGKSOrthoManager.hpp	Classical Gram-Schmidt (with DGKS correction) implementation of the Belos::OrthoManager class
BelosFixedPointIter.hpp	Belos concrete class for performing fixed point iteration iteration
BelosFixedPointIteration.hpp	Pure virtual base class which augments the basic interface for a fixed point linear solver iteration
BelosFixedPointSolMgr.hpp	The Belos::FixedPointSolMgr provides a solver manager for the FixedPoint linear solver
BelosGCRODRIter.hpp	Belos concrete class for performing the GCRO-DR iteration
BelosGCRODRSolMgr.hpp	Declaration and definition of Belos::GCRODRSolMgr, which implements the GCRODR (recycling GMRES) solver
BelosGlobalComm.hpp
BelosGmresIteration.hpp	Pure virtual base class which augments the basic interface for a Gmres linear solver iteration
BelosGmresPolyOp.hpp	Defines the GMRES polynomial operator hybrid-GMRES iterative linear solver
BelosGmresPolySolMgr.hpp	Declaration and definition of Belos::GmresPolySolMgr (hybrid block GMRES linear solver)
BelosICGSOrthoManager.hpp	Iterated Classical Gram-Schmidt (ICGS) implementation of the Belos::OrthoManager class
BelosIMGSOrthoManager.hpp	Iterated Modified Gram-Schmidt (IMGS) implementation of the Belos::OrthoManager class
BelosInnerSolver.hpp
BelosInnerSolveResult.cpp
BelosInnerSolveResult.hpp
BelosIteration.hpp	Pure virtual base class which describes the basic interface to the linear solver iteration
BelosLinearProblem.hpp	Class which describes the linear problem to be solved by the iterative solver
BelosLSQRIter.hpp	Belos concrete class that iterates LSQR
BelosLSQRIteration.hpp	IterationState contains the data that defines the state of the LSQR solver at any given time
BelosLSQRSolMgr.hpp	LSQRSolMgr: interface to the LSQR method
BelosLSQRStatusTest.hpp	Belos::StatusTest class defining LSQR convergence
BelosMatOrthoManager.hpp	Templated virtual class for providing orthogonalization/orthonormalization methods with matrix-based inner products
BelosMinresIter.hpp	MINRES iteration implementation
BelosMinresIteration.hpp	Pure virtual base class which augments the basic interface for a minimal residual linear solver iteration
BelosMinresSolMgr.hpp	Solver manager for the MINRES linear solver
BelosMultiVec.hpp	Interface for multivectors used by Belos' linear solvers
BelosMultiVecTraits.hpp	Declaration of basic traits for the multivector type
BelosMVOPTester.hpp	Test routines for MultiVecTraits and OperatorTraits conformity
BelosOperator.hpp	Alternative run-time polymorphic interface for operators
BelosOperatorT.hpp
BelosOperatorTraits.hpp	Class which defines basic traits for the operator type
BelosOrthoManager.hpp	Templated virtual class for providing orthogonalization/orthonormalization methods
BelosOrthoManagerFactory.hpp
BelosOrthoManagerTest.hpp	Tests for Belos::OrthoManager and Belos::MatOrthoManager subclasses
BelosOutputManager.hpp	Class which manages the output and verbosity of the Belos solvers
BelosPCPGIter.hpp	Belos concrete class to iterate Preconditioned Conjugate Projected Gradients
BelosPCPGSolMgr.hpp	Declaration and definition of Belos::PCPGSolMgr (PCPG iterative linear solver)
BelosProjectedLeastSquaresSolver.hpp	Methods for solving GMRES' projected least-squares problem
BelosPseudoBlockCGIter.hpp	Belos concrete class for performing the pseudo-block CG iteration
BelosPseudoBlockCGSolMgr.hpp	The Belos::PseudoBlockCGSolMgr provides a solver manager for the BlockCG linear solver
BelosPseudoBlockGmresIter.hpp	Belos concrete class for performing the pseudo-block GMRES iteration
BelosPseudoBlockGmresSolMgr.hpp	The Belos::PseudoBlockGmresSolMgr provides a solver manager for the BlockGmres linear solver
BelosPseudoBlockStochasticCGIter.hpp	Belos concrete class for performing the stochastic pseudo-block CG iteration
BelosPseudoBlockStochasticCGSolMgr.hpp	The Belos::PseudoBlockStochasticCGSolMgr provides a solver manager for the stochastic BlockCG linear solver
BelosPseudoBlockTFQMRIter.hpp	Belos concrete class for generating iterations with the preconditioned tranpose-free QMR (TFQMR) method
BelosPseudoBlockTFQMRSolMgr.hpp	The Belos::PseudoBlockTFQMRSolMgr provides a solver manager for the pseudo-block TFQMR linear solver
BelosRCGIter.hpp	Belos concrete class for performing the RCG iteration
BelosRCGSolMgr.hpp	The Belos::RCGSolMgr provides a solver manager for the RCG (Recycling Conjugate Gradient) linear solver
BelosSimpleOrthoManager.hpp	Simple OrthoManager implementation for benchmarks
BelosSolverFactory.cpp
BelosSolverFactory.hpp
BelosSolverFactory_Belos.hpp
BelosSolverFactory_Generic.hpp
BelosSolverManager.hpp	Pure virtual base class which describes the basic interface for a solver manager
BelosStatusTest.hpp	Pure virtual base class for defining the status testing capabilities of Belos
BelosStatusTestCombo.hpp	Belos::StatusTest for logically combining several status tests
BelosStatusTestFactory.hpp
BelosStatusTestGeneralOutput.hpp	Special StatusTest for printing any kind of status test
BelosStatusTestGenResNorm.hpp	Belos::StatusTestResNorm for specifying general residual norm stopping criteria
BelosStatusTestGenResSubNorm.hpp	Belos::StatusTestResSubNorm for specifying general residual norm of sub-residual vectors stopping criteria
BelosStatusTestImpResNorm.hpp	Belos::StatusTest for specifying an implicit residual norm stopping criteria that checks for loss of accuracy
BelosStatusTestLogResNorm.hpp	Belos::StatusTest debugging class for storing the absolute residual norms generated during a solve
BelosStatusTestMaxIters.hpp	Belos::StatusTest class for specifying a maximum number of iterations
BelosStatusTestOutput.hpp	Virtual base class for StatusTest that printing status tests
BelosStatusTestOutputFactory.hpp	A factory class for generating StatusTestOutput objects
BelosStatusTestResNorm.hpp	Belos::StatusTest abstract class for specifying a residual norm stopping criteria
BelosStatusTestResNormOutput.hpp	Special StatusTest for printing status tests in simple format for residuals
BelosStatusTestUserOutput.hpp	Special StatusTest for printing status tests in simple format for residuals
BelosStochasticCGIteration.hpp	Pure virtual base class which augments the basic interface for a stochastic conjugate gradient linear solver iteration
BelosStubTsqrAdapter.hpp	"Stub" TSQR adapter for unsupported multivector types
BelosTFQMRIter.hpp	Belos concrete class for generating iterations with the preconditioned tranpose-free QMR (TFQMR) method
BelosTFQMRSolMgr.hpp	The Belos::TFQMRSolMgr provides a solver manager for the TFQMR linear solver
BelosTsqrOrthoManager.hpp	Orthogonalization manager based on Tall Skinny QR (TSQR)
BelosTsqrOrthoManagerImpl.hpp	Orthogonalization manager back end based on Tall Skinny QR (TSQR)
BelosTypes.cpp
BelosTypes.hpp	Collection of types and exceptions used within the Belos solvers
BelosUtils.hpp
BelosVersion.cpp	Simple function for returning the current version number [necessary for portability]