Luv is a binding to libuv, the cross-platform C library that does asynchronous I/O in Node.js and runs its main loop. Besides asynchronous I/O, libuv also supports multiprocessing and multithreading. Multiple event loops can be run in different threads. libuv also exposes a lot of other functionality, amounting to a full OS API, and an alternative to the standard module Unix.

Uuidm is an OCaml module implementing 128 bits universally unique identifiers (UUIDs) version 3, 5 (named based with MD5, SHA-1 hashing) and 4 (random based) according to RFC 4122.

Used to trace execution of OCaml/Lwt programs (such as Mirage unikernels) at the level of Lwt threads. The traces can be viewed using JavaScript or GTK viewers provided by mirage-trace-viewer or processed by tools supporting the Common Trace Format. When compiled against a normal version of Lwt, OCaml's cross-module inlining will optimise these calls away, meaning there should be no overhead in the non-profiling case.

Uucd is an OCaml module to decode the data of the Unicode character database from its XML representation. It provides high-level (but not necessarily efficient) access to the data so that efficient representations can be extracted.

This package backports some of the new stdlib features to older compilers, such as the Stdlib module. This allows projects that require compatibility with older compiler to use these new features in their code.

This package can automatically generate runtime types from type definitions.

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.

Parses and constructs RFC compliant domain names. The invariants on the length of domain names are preserved throughout the module.

This package contains code that is shared between various dune packages. However, it is not meant for public consumption and provides no stability guarantee.

Dune is a build system for OCaml. It provides a consistent experience and takes care of the low-level details of OCaml compilation. Descriptions of projects, libraries and executables are provided in dune files following an s-expression syntax.

This package is a ppx extension for easier implementation of conversion functions between almost identical types.

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

OCaml-SSL is a set of bindings for OpenSSL, a library for communicating through Transport Layer Security (TLS) encrypted connections.

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.

C header files shared between the various Jane Street packages.

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.

This package provides the core modules of Modal Editing Witch, a general modal editing engine generator.

This package allows parsing of dates that follow the ISO 8601 and RFC 3339 formats in OCaml.

Ctypes is a library for binding to C libraries using pure OCaml. The primary aim is to make writing C extensions as straightforward as possible. The core of ctypes is a set of combinators for describing the structure of C types -- numeric types, arrays, pointers, structs, unions and functions. You can use these combinators to describe the types of the functions that you want to call, then bind directly to those functions -- all without writing or generating any C!

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

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

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.

Ppx_derivers is a tiny package whose sole purpose is to allow ppx_deriving and ppx_type_conv to inter-operate gracefully when linked as part of the same ocaml-migrate-parsetree driver.

ppx-sexp-value is a ppx rewriter that simplifies building s-expressions from ocaml values.