This package provides ppx_sexp_message-like extension nodes for lazily rendering log messages.

This package generates JUnit XML reports from ocaml-alcotest test suites.

The uchar package provides a compatibility library for the `Uchar` module introduced in OCaml 4.03.

This package provides a duration is represented in nanoseconds as an unsigned 64 bit integer. This has a range of up to 584 years. Functions provided check the input and raise on negative or out of bound input.

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

This package simply repackages the OCaml compiler libraries so they don't expose everything at toplevel. For instance, Ast_helper is now Ocaml_common.Ast_helper.

This library is a compatibility module for the Either module defined in OCaml 4.12.0.

This package adds S-exp support to ocaml-uri.

This package provides string type based on [Bigarray], for use in I/O and C-bindings.

Camomile is a Unicode library for OCaml. Camomile provides Unicode character type, UTF-8, UTF-16, UTF-32 strings, conversion to/from about 200 encodings, collation and locale-sensitive case mappings, and more. The library is currently designed for Unicode Standard 3.2.

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.

This package provides two union-find data structure implementations for OCaml. Both implementations are based on disjoint sets forests, with path compression and linking-by-rank, so as to guarantee good asymptotic complexity: every operation requires a quasi-constant number of accesses to the store.

Camlp5 is a Pre-Processor-Pretty-Printer for Objective Caml. It offers tools for syntax (Stream Parsers and Grammars) and the ability to modify the concrete syntax of the language (Quotations, Syntax Extensions).

Handle computation results and errors in an explicit and declarative manner, without resorting to exceptions. It defines combinators to operate on the result type available from OCaml 4.03 in the standard library.

Generation of binary serialization and deserialization functions from type definitions.

Js_of_ocaml is a compiler from OCaml bytecode to JavaScript. It makes it possible to run pure OCaml programs in JavaScript environment like browsers and Node.js.

OASIS is a tool to integrate a configure, build and install system in your OCaml projects. It helps to create standard entry points in your build system and allows external tools to analyse your project easily.

Crowbar is a library for testing code, combining QuickCheck-style property-based testing and the magical bug-finding powers of afl-fuzz.

OCamlgraph is a generic graph library for OCaml.

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.

Timezone handles parsing timezone data and create Timezone.t that can later be used to manipulate time in core_kernel or core.

Angstrom is a parser-combinator library that makes it easy to write efficient, expressive, and reusable parsers suitable for high-performance applications. It exposes monadic and applicative interfaces for composition, and supports incremental input through buffered and unbuffered interfaces. Both interfaces give the user total control over the blocking behavior of their application, with the unbuffered interface enabling zero-copy IO. Parsers are backtracking by default and support unbounded lookahead.

Jsonm is a non-blocking streaming codec to decode and encode the JSON data format. It can process JSON text without blocking on IO and without a complete in-memory representation of the data.

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