Provides an OCaml interface to operations that have dedicated hardware instructions on some micro-architectures, with default implementations using C stubs for all targets.

Digestif is an OCaml library that provides implementations of hash algorithms. Implemented hash algorithms include MD5, SHA1, SHA224, SHA256, SHA384, SHA512, Blake2b, Blake2s and RIPEMD160.

The subset of textutils using only core_kernel and working in javascript.

This package provides the lablgtk interface to the GTK+ gtksourceview library.

opam-installer is a tool for installing OCaml packages based on .install files defined by the OPAM package manager. It is useful for installing OCaml packages without requiring the entirety of OPAM.

TyXML provides a set of convenient combinators that uses the OCaml type system to ensure the validity of the generated documents. TyXML can be used with any representation of HTML and SVG: the textual one, provided directly by this package, or DOM trees (js_of_ocaml-tyxml) virtual DOM (virtual-dom) and reactive or replicated trees (eliom). You can also create your own representation and use it to instantiate a new set of combinators.

OCaml-Num contains the legacy Num library for arbitrary-precision integer and rational arithmetic that used to be part of the OCaml core distribution.

Ocp-indent is based on an approximate, tolerant OCaml parser and a simple stack machine. Presets and configuration options are available, with the possibility to set them project-wide. It supports the most common syntax extensions, and it is extensible for others.

This package includes:

• An indentor program, callable from the command-line or from within editors,

• Bindings for popular editors,

• A library that can be directly used by editor writers, or just for fault-tolerant and approximate parsing.

base-quickcheck provides randomized testing in the style of Haskell's Quickcheck library, with support for built-in types as well as types provided by Base.

This library provides an alternative to the Format module of the OCaml standard library. Pp uses the same concepts of boxes and break hints, and the final rendering is done to formatter from the Format module. However it defines its own algebra which some might find easier to work with and reason about.

This package contains a syntax extension for writing in-line tests in ocaml code. It is part of Jane Street's PPX rewriters collection.

Expect-test is a framework for writing tests in OCaml, similar to Cram. Expect-tests mimics the existing inline tests framework with the let%expect_test construct. The body of an expect-test can contain output-generating code, interleaved with %expect extension expressions to denote the expected output.

Down is an unintrusive user experience upgrade for the ocaml toplevel (REPL).

Simply load the zero dependency down library in the ocaml toplevel and you get line edition, history, session support and identifier completion and documentation with ocp-index.

Add this to your ~/.ocamlinit:

#use "down.top"

You may also need to add this to your ~/.ocamlinit and declare the environment variable OCAML_TOPLEVEL_PATH:

let () =
  try Topdirs.dir_directory (Sys.getenv "OCAML_TOPLEVEL_PATH")
  with Not_found -> ()

OR

let () = String.split_on_char ':' (Sys.getenv "OCAMLPATH")
         |> List.filter (fun x -> Filename.check_suffix x "/site-lib")
         |> List.map (fun x -> x ^ "/toplevel")
         (* remove the line below if you don't want to see the text
            every time you start the toplevel *)
         |> List.map (fun x -> Printf.printf "adding directory %s\n" x; x)
         |> List.iter Topdirs.dir_directory;;

The Core suite of libraries is an alternative to OCaml's standard library.

Hex is a minimal library providing hexadecimal converters.

Cstruct is a library and syntax extension to make it easier to access C-like structures directly from OCaml. It supports both reading and writing to these structures, and they are accessed via the Bigarray module.

Dose3 is a framework made of several OCaml libraries for managing distribution packages and their dependencies. Though not tied to any particular distribution, dose3 constitutes a pool of libraries which enable analyzing packages coming from various distributions. Besides basic functionalities for querying and setting package properties, dose3 also implements algorithms for solving more complex problems such as monitoring package evolutions, correct and complete dependency resolution and repository-wide uninstallability checks.

Easy-format is a high-level and functional interface to the Format module of the OCaml standard library.

This package provides a library for parsing the contents of OCaml documentation comments, formatted using Odoc syntax, an extension of the language understood by ocamldoc.

Binary Analysis Platform is a framework for writing program analysis tools, that target binary files. The framework consists of a plethora of libraries, plugins, and frontends. The libraries provide code reusability, the plugins facilitate extensibility, and the frontends serve as entry points.

OCamlgraph is a generic graph library for OCaml.

This package contains an syntax extension to indicate that the code is on the cold path and should be kept out of the way to avoid polluting the instruction cache on the hot path. See also https://github.com/ocaml/ocaml/issues/8563.

Utilities for working with terminal output, such as color printing.

Traditional implementation of priority queues using a binary heap encoded in a resizable array.