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

2024-11-13 opam 2.3.0 release

2024-10-30 opam 2.3.0 rc1 release

2024-10-23 opam 2.3.0 beta2 release

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

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
ppxlib_jane v0.17.2	Nov 19
grid 0.2.0	Nov 19
icalendar 0.1.9	Nov 19
ocaml-system 5.2.1	Nov 19
async_ssl v0.17.0-1	Nov 19
containers-data 3.15	Nov 19
containers 3.15	Nov 19
coccinelle 1.3.0	Nov 19
ppx_deriving_yaml 0.4.0	Nov 19
ppx_deriving_ezjsonm 0.4.0	Nov 19
all packages

OCaml Package Manager

News

Contribute

Documentation

4951 packages