| BaseConstraint | Abstract base class for constraints of kinematic fits |
| BaseEvent | Abstract base class for different kinds of events |
| BaseFitObject | Abstract base class for particle objects of kinematic fits |
| BaseFitter | Abstract base class for fitting engines of kinematic fits |
| BaseJetPairing | Abstract base class for jet pairings |
| ChargedParticleTrack | A helix track of a charged particle with start and stop vertex |
| EConstraint | Sum (E) = ECM constraint |
| FourJetPairing | Class to handle permutations of 2b jets and 4 light jets |
| FourVector | Yet another four vector class, with metric +--- |
| H1K0Event | |
| H1K0Event2 | |
| H1K0S | |
| H1Tracks | |
| HCFITDType | |
| JBLHelix | A helix, parametrized by (kappa, phi0, theta, dca, z0) |
| JetFitObject | Class for jets with (E, eta, phi) in kinematic fits |
| K0Event | |
| MassConstraint | |
| NeutralParticleTrack | A helix track of a charged particle with start and stop vertex |
| NeutrinoFitObject | Class for neutrinos with (E, eta, phi) in kinematic fits |
| NewtonFitter | |
| ParticleConstraint | Abstract base class for constraints of kinematic fits |
| ParticleFitObject | Abstract base class for particle objects of kinematic fits |
| PConstraint | |
| PxConstraint | Sum (px) = 0 constraint |
| PyConstraint | Sum (py) = 0 constraint |
| PzConstraint | Sum (pz) = 0 constraint |
| QUESTType | |
| StableChargedParticle | Represents charged particles with (E, eta, phi) in kinematic fits |
| ThreeVector | |
| TopEvent | |
| TrackConstraint | Abstract base class for constraints of kinematic fits |
| TrackFitObject | Abstract base class for track objects of kinematic fits |
| TrackMomentumConstraint | |
| TTVertexConstraint | |
| TwoB4JPairing | |
| TwoVector | |
| VertexConstraint | Constrains a TrackFitObject to a VertexFitObject |
| VertexFitObject | Class that represents vertices |
| VertexFitObject::TrackDescriptor | |
| WWFitter | |
| WWFitterFast | |
