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

2021-08-04 opam 2.1.0 is released!

2021-08-03 opam 2.0.9 release

2021-06-23 opam 2.1.0~rc2 released

2021-02-08 opam 2.1.0~beta4 released

2021-02-08 opam 2.0.8 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

3553 packages

New packages
mtime 1.3.0	Oct 20
portmidi 0.1	Oct 20
conan-unix 0.0.1	Oct 20
conan-lwt 0.0.1	Oct 20
conan-database 0.0.1	Oct 20
conan-cli 0.0.1	Oct 20
conan 0.0.1	Oct 20
tidy_email_smtp 0.0.1	Oct 20
tidy_email_sendgrid 0.0.1	Oct 20
tidy_email_mailgun 0.0.1	Oct 20
all packages