Here is a list of all namespaces with brief descriptions:

[detail level 12345]

ic5CaloJets_cfi
IC5CaloJetsMCFlavour_cff
ic5GenJets_cfi
ic5JetID_cfi
ic5JetTracksAssociatorAtVertex_cfi
ic5JetVertexCompatibility_cfi
ic5PFJets_cfi
ic5PFJetTracksAssociatorAtVertex_cfi
ic5TrackJets_cfi
ic7JetID_cfi
idealForDigiCscGeometry_cff
idealForDigiCscGeometryDB_cff
idealForDigiDtGeometry_cff
idealForDigiDtGeometryDB_cff
idealForDigiTrackerGeometry_cff
idealForDigiTrackerGeometryDB_cff
idealForDigiTrackerSLHCGeometry_cff
idealGeomPlusEE_cfi
iguana_TBH4_2007_cfg
impactParameter_cff
impactParameterMVABJetTags_cfi
impactParameterMVAComputer_cfi
impactParameterTagInfos_cfi
inclusiveCandidateVertexFinder_cfi
InclusiveppMuX_7TeV_cfi
InclusiveppMuX_8TeV_cfi
InclusiveppMuX_8TeV_TuneCUETP8M1_cfi
InclusiveppMuX_cfi
inclusiveSecondaryVertexFinderFilteredNegativeTagInfos_cfi
inclusiveSecondaryVertexFinderFilteredTagInfos_cfi
inclusiveSecondaryVertexFinderNegativeTagInfos_cfi
inclusiveSecondaryVertexFinderTagInfos_cfi
inclusiveVertexFinder_cfi
inclusiveVertexing_cff
inconsistentMuonPFCandidateFilter_cfi
info_dqm_sourceclient-live_cfg
InitialStep_cff
InitialStepPreSplitting_cff
InitRootHandlers_cfi
inOutSeedsFromTrackerMuons_cfi
inputsource_file_cfi
IntegrityClient_cfi
IntegrityTask_cfi
interestingDetIdCollectionProducer_cfi
interestingDetIdFromSuperClusterProducer_cfi
interestingEgammaIsoDetIdsSequence_cff
interestingEgammaIsoESDetIdModule_cff
interestingEgammaIsoHCALDetIdModule_cff
interestingEleIsoDetIdModule_cff
interestingGamIsoDetIdModule_cff
IOMC_cff
IOMC_EventContent_cff
iptCorrector_cfi
islandBasicClusters_cfi
islandClusteringSequence_cff
islandSuperClusters_cfi
isoAnalyzer_cfi
isoDepositProducerIOBlocks_cff
isoDeposits_cfi
isolatedGenParticles_cfi
isolatedPartcilesGen_cfi
IsolatedTauJetsSelector_cfi
isolatedTracksCone_cfi
isolatedTracksHcalScale_cfi
isolatedTracksNxN_cfi
isolation_cff
isolationCalculator_cfi
isolEcalPixelTrackProd_cfi
isolPixelTrackProd_cfi
isoMuonHLT_cfi
isoTrack_cff
isoTrackCalib_cfi
isoTrackCalibration_cfi
isoTrig_cfi
IterativeCandidateProducer_cff
iterativeCone5JTA_cff
IterativeConePu5Jets_PbPb_cff
IterativeDetachedTripletStep_cff
IterativeInitialStep_cff
IterativeLowPtTripletStep_cff
IterativeMixedTripletStep_cff
IterativePixelLessStep_cff
IterativePixelPairStep_cff
iterativeTk_cff
iterativeTkDisplaced_cff
IterativeTobTecStep_cff
IterativeTracking_cff
IterTrackingModules4seedMonitoring_cfi