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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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Most Used Packages
OCaml documentation generator
Used by 606 other packages
Promises and event-driven I/O
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Alcotest is a lightweight and colourful test framework
Used by 426 other packages
Declarative definition of command line interfaces for OCaml
Used by 321 other packages
This is a transition package, ounit is now ounit2
Used by 302 other packages
Virtual package relying on a libpcre2 system installation
2 days ago
Solves the Knight's tour puzzle
4 days ago
Generate useful code for stats gathering from records of counters
7 days ago
TypeScript code generation for ATD APIs
9 days ago
A divide-and-conquer algorithm in OCaml for the intersection of sorted sequences
9 days ago
Bencode backend for decoders
CBOR backend for decoders
Ezjsonm backend for decoders
Jsonm backend for decoders
Msgpck backend for decoders
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.
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.
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.