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Ocsigen is a mobile and Web application framework based on concepts derived from recent research in the field of programming languages, namely that of multi-tier programming and continuation-based web programming. It is developed in OCaml, which is also the target language for users of this framework.
Ocsigen is developed by the IRIF research laboratory (CNRS and University Paris Diderot) and Be Sport.
Ocsigen is composed of the following components:
- A multi-tier extension of OCaml, allowing to implement both the server and client parts of a Web and mobile application as a single program.
- A cooperative threads library named lwt.
- A complete and extensible Web server, supporting features such as CGI, a reverse proxy, data compression, and access control. Extensions for this server may be written in Ocaml.
- Lwt, a cooperative threading library for handling concurrency.
Ocsigen is used by the Be Sport social network, by Facebook Hack and many other small projects.