OCaml Packages
Explore thousands of open-source OCaml packages with their documentation
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opam
The OCaml Package Manager
Opam is a source-based package manager for OCaml. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow
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4895
Packages
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32
New packages this month
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59
Updates this week
packages
Most Used
odoc
OCaml Documentation Generator
alcotest
Alcotest is a lightweight and colourful test framework
lwt
Promises and event-driven I/O
cmdliner
Declarative definition of command line interfaces for OCaml
fmt
OCaml Format pretty-printer combinators
New Packages
openbsd
Bindings for some OpenBSD syscalls
lwt_ppx_let
Dummy package context for ppx_let tests
api-watch
Libraries and tools to keep watch on your OCaml lib's API changes
xlsx2csv
Simple library to export .xlsx files as CSVs
timmy-lwt
Lwt utilities based on Timmy
Recently Updated
openbsd
Bindings for some OpenBSD syscalls
lwt_ppx_let
Dummy package context for ppx_let tests
cmdliner-stdlib
A collection of cmdliner terms to control OCaml runtime parameters
api-watch
Libraries and tools to keep watch on your OCaml lib's API changes
xlsx2csv
Simple library to export .xlsx files as CSVs
stable ecosystem
Focus on Your Code, and opam Takes Care of Distributing It
Our users have the highest standards for the OCaml ecosystem to run mission-critical applications across a variety of operating systems, and they expect that a package that compiles today will still work a decade from now
Continuous Integration
Before any package update, we run sandboxed matrix builds for boundaries of the dependencies and for each of the dependent packages. A package publication will never break the rest of the ecosystem.
State of the Art
Opam supports publishing multiple versions of packages simultaneously to specify the version constraints, so only compatible revisions are chosen for a build. It comes with a performant constraint solver, a flexible CLI, a well-specified metadata format, and an easy access to the package manager logic via OCaml libraries.
Package Stability
The opam project and package repository is maintained by a team of developers who ensure that everything is not only running smoothly, but also curated to maintain a high degree of metadata quality. This makes it one of the most stable package repositories available today.
community
Start Contributing
Learn how to publish your first Opam package today and make it available to the rest of the community.
