OPAM logo  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



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

Last week
2442 users
54328 package installations
8064 repository updates
Last month
8956 users
253188 package installations
34761 repository updates
Most Downloaded Packages (this month)
ocamlfind 9795
cppo 6810
biniou 5461
lwt 5417
ppx_tools 5405
yojson 5023
easy-format 4798
camlp4 4622
ppx_deriving 3893
ounit 3860
all packages