Lexer generator for Unicode and OCaml.

Ppx-import is a syntax extension for importing declarations from interface files.

The ocaml-integers library provides a number of 8-, 16-, 32- and 64-bit signed and unsigned integer types, together with aliases such as long and size_t whose sizes depend on the host platform.

QuickCheck inspired property-based testing for OCaml. This module checks invariants (properties of some types) over randomly generated instances of the type. It provides combinators for generating instances and printing them.

A ppx rewriter that rewrites simple match statements with an if then else expression.

This package can automatically generate runtime types from type definitions.

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.

Uucp is an OCaml library providing efficient access to a selection of character properties of the Unicode character database.

This package provides an OCaml library for interacting with files in the TOML format. Specifically, it provides a parser, a serializer, and a pretty printer.

Merlin is an editor service that provides modern IDE features for OCaml. Emacs and Vim support is provided out-of-the-box. External contributors added support for Visual Studio Code, Sublime Text and Atom.

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

Base is a complete and portable alternative to the OCaml standard library. It provides all standard functionalities one would expect from a language standard library. It uses consistent conventions across all of its module.

Base aims to be usable in any context. As a result system dependent features such as I/O are not offered by Base. They are instead provided by companion libraries such as ocaml-stdio.

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;;

HeVeA is a LaTeX to HTML translator that generates modern HTML 5. It is written in Objective Caml.

Base64 is a group of similar binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. It is specified in RFC 4648.

Octavius is a library to parse the `ocamldoc` comment syntax.

This OCaml library provides an equal function on string in constant-time to avoid timing-attack with crypto stuff.

OCaml-uri is a library for parsing URI/URL in the RFC3986 format.

Uunf is an OCaml library for normalizing Unicode text. It supports all Unicode normalization forms. The library is independent from any IO mechanism or Unicode text data structure and it can process text without a complete in-memory representation.

Bos provides support for basic and robust interaction with the operating system in OCaml. It has functions to access the process environment, parse command line arguments, interact with the file system and run command line programs.

This package provides a deprecated logging component for ocaml lwt.

Uutf is a non-blocking streaming codec to decode and encode the UTF-8, UTF-16, UTF-16LE and UTF-16BE encoding schemes. It can efficiently work character by character without blocking on IO. Decoders perform character position tracking and support newline normalization.

Functions are also provided to fold over the characters of UTF encoded OCaml string values and to directly encode characters in OCaml Buffer.t values.

Generate modules from OCaml source files.

These libraries provides access to low-level compiler interfaces and the standard higher-level merlin protocol.