Ocamljs is a system for compiling OCaml to Javascript. It includes a Javascript back-end for the OCaml compiler, as well as several support libraries, such as bindings to the browser DOM. Ocamljs also works with orpc for RPC over HTTP, and froc for functional reactive browser programming. The full OCaml language and much of the OCaml standard library is supported. There is special support for the object system so Javascript objects may be called from OCaml and vice-versa.