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


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

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Last week
2917 users
34330 package installations
7493 repository updates
Last month
12457 users
156749 package installations
27651 repository updates
New packages
depext 0.8 Jul 27
core 112.35.01 Jul 27
obuild 0.1.5 Jul 27
beluga 0.8.2 Jul 27
devkit 0.3 Jul 25
ocurl 0.7.5 Jul 25
arakoon 1.8.6 Jul 24
extunix 0.1.2 Jul 24
js_of_ocaml 2.6 Jul 23
mybuild 2 Jul 23
all packages
Most Downloaded Packages (this month)
ocamlfind 10277
lwt 7350
ppx_tools 6238
cppo 3694
type_conv 2935
sexplib 2915
easy-format 2544
yojson 2428
biniou 2364
menhir 2028
all packages