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. Managing your OCaml installation can be as simple as:

opam list -a         # List the available packages
opam install lwt     # Install LWT
opam update          # Update the package list
...
opam upgrade         # Upgrade the installed packages to their latest version

Download and install opam » How to use opam »

News

2024-10-15 opam 2.3.0 beta1 release

2024-09-19 opam 2.3.0 alpha1 release

2024-08-22 opam 2.2.1 release

2024-07-01 opam 2.2.0 release

2024-06-21 opam 2.2.0 rc1 release

2024-06-10 opam 2.2.0 beta3 release

2024-05-17 opam 2.1.6 release

2024-05-13 opam 2.2.0~beta2 - Windows OCaml

2024-04-09 opam 2.2.0 beta2 release

2024-01-18 opam 2.2.0 beta1 release

2023-11-13 opam 2.2.0 alpha3 release

Contribute

Report bugs and ask for features in the opam tool
Report packaging issues or request new packages

Address general queries on the tool and packages
Discuss the tool internals
Check the state of the packages

Documentation

Installing opam

Creating Packages

The opam Manual

New packages
ppx_deriving_decoders 0.1	Oct 17
hol_light_module 1.0	Oct 17
checked_oint 0.2.1	Oct 17
rust-staticlib-virtual 0.2.0	Oct 16
rust-staticlib-gen 0.2.0	Oct 16
dune-cargo-build 0.2.0	Oct 16
ppx_deriving_json_schema 1.0.1	Oct 16
openapi-opium 1.0.1	Oct 16
openapi 1.0.1	Oct 16
opam-state 2.3.0~beta1	Oct 16
all packages

OCaml Package Manager

News

Contribute

Documentation

4911 packages