Arg

Parsing of command line arguments.

Array
ArrayLabels

Array operations

Bigarray

Large, multi-dimensional, numerical arrays.

Bool

Boolean values.

Buffer

Extensible buffers.

Bytes

Byte sequence operations.

BytesLabels

Byte sequence operations.

Callback

Registering OCaml values with the C runtime.

CamlinternalFormat
CamlinternalFormatBasics
CamlinternalLazy

Run-time support for lazy values.

CamlinternalMod

Run-time support for recursive modules.

CamlinternalOO

Run-time support for objects and classes.

Char

Character operations.

Complex

Complex numbers.

Condition

Condition variables to synchronize between threads.

Digest

MD5 message digest.

Dynlink

Dynamic loading of .cmo, .cma and .cmxs files.

Ephemeron

Ephemerons and weak hash tables

Event

First-class synchronous communication.

Filename

Operations on file names.

Float

Floating-point arithmetic

Format

Pretty-printing.

Fun

Function manipulation.

Gc

Memory management control and statistics; finalised values.

Genlex

A generic lexical analyzer.

Hashtbl

Hash tables and hash functions.

Int

Integer values.

Int32

32-bit integers.

Int64

64-bit integers.

Lazy

Deferred computations.

Lexing

The run-time library for lexers generated by ocamllex.

List

List operations.

ListLabels
Map

Association tables over ordered types.

Marshal

Marshaling of data structures.

MoreLabels

Extra labeled libraries.

Mutex

Locks for mutual exclusion.

Nativeint

Processor-native integers.

Obj

Operations on internal representations of values.

Ocaml_operators

Precedence level and associativity of operators

Oo

Operations on objects

Option

Option values.

Parsing

The run-time library for parsers generated by ocamlyacc.

Printexc

Facilities for printing exceptions and inspecting current call stack.

Printf

Formatted output functions.

Queue

First-in first-out queues.

Random

Pseudo-random number generators (PRNG).

Result

Result values.

Scanf

Formatted input functions.

Seq

Functional Iterators

Set

Sets over ordered types.

Spacetime

Profiling of a program's space behaviour over time.

Stack

Last-in first-out stacks.

StdLabels

Standard labeled libraries.

Stdlib

The OCaml Standard library.

Str

Regular expressions and high-level string processing

Stream

Streams and parsers.

String

String operations.

StringLabels

String operations.

Sys

System interface.

Thread

Lightweight threads for Posix 1003.1c and Win32.

ThreadUnix

Thread-compatible system calls.

Uchar

Unicode characters.

Unit

Unit values.

Unix

Interface to the Unix system.

UnixLabels

Interface to the Unix system.

Weak

Arrays of weak pointers and hash sets of weak pointers.