- BalancedSegmentMergePolicy
- BalancedSegmentMergePolicy.MergePolicyParams
- CompoundFileExtractor
- DirectIOLinuxDirectory
- FieldNormModifier
- GetTermInfo
- HighFreqTerms
- IndexMergeTool
- IndexSorter
- IndexSplitter
- MultiPassIndexSplitter
- NativePosixUtil
- PKIndexSplitter
- SweetSpotSimilarity
- TermVectorAccessor
- WindowsDirectory
- WindowsDirectory.WindowsIndexInput