1. Control
    1. Concurrency
      1. Common
      2. Threads
        1. Condition
        2. Event
        3. Mutex
        4. Thread
      3. Exceptions
      4. Return
      5. Monad
  2. Codec
    1. Gzip
    2. Bz2
    3. Zip
    4. Transcode
  3. Data
    1. Containers
      1. Array
        1. Cap
          1. ExceptionLess
          2. Labels
        2. ExceptionLess
        3. Labels
      2. Bigarray
        1. Array1
        2. Array2
        3. Array3
        4. Genarray
      3. Dllist
      4. Dynarray
      5. Enum
        1. ExceptionLess
        2. Labels
      6. Global
      7. Hashtbl
        1. Make
          1. ExceptionLess
          2. Labels
      8. Lazy
      9. List
        1. ExceptionLess
        2. Labels
      10. Map
        1. Make
          1. ExceptionLess
          2. Labels
      11. Option
        1. Labels
      12. PMap
      13. PSet
      14. RefList
        1. Index
      15. Queue
      16. Ref
      17. RefList
      18. Set
      19. Make
        1. ExceptionLess
        2. Labels
      20. Stack
      21. Stream
    2. Logical
      1. Bool
      2. BitSet
      3. Unit
    3. Numeric
      1. Interfaces (formerly Common)
      2. Big_int
      3. Common
      4. Complex
      5. Float
      6. Int
      7. Int32
      8. Int64
      9. Native_int
      10. Num
      11. Safe_int
    4. Text
      1. Buffer
      2. Char
      3. UTF8
      4. Rope
      5. UChar
      6. String
        1. Labels
  4. Distro
    1. Packages (formerly Findlib)
    2. Tools (formerly Execute)
  5. Internals
    1. Callback
    2. Gc
    3. Mod (formerly CamlinternalMod)
    4. Obj
    5. Oo
      1. Private (formerly CamlinternalOo)
    6. Weak
      1. Make
  6. Network (placeholder)
  7. Text (formerly Languages)
    1. Lex
      1. Genlex
        1. Languages
          1. C
          2. OCaml
      2. Lexing
    2. Parse
      1. CharParser
      2. UCharParser
      3. ParserCo
        1. Source
      4. Parsing
    3. Pretty
      1. Format
    4. Printf
    5. Regexp
      1. Str
      2. PCRE (in the future)
    6. Scanf
      1. Scanning
    7. SExpr
    8. XML (placeholder)
  8. Standard (automatically opened)
  9. Sys
    1. Arg
    2. File
    3. IO
      1. BigEndian
    4. OptParse
      1. Opt
      2. OptParser
      3. StdOpt
    5. Path (formerly Filename)
    6. Shell (formerly Sys)
    7. Unix
      1. Labels
  10. Util
    1. Digest
    2. Random
      1. State
  11. Legacy