# \[ANN\] Ocsigen Server 8.0.0

**URL:** <https://discuss.ocaml.org/t/ann-ocsigen-server-8-0-0/18564>\
**Category:** Ecosystem\
**Tags:** web, ocsigen\
**Created:** [September 28, 2026, 2:20pm UTC](https://discuss.ocaml.org/t/ann-ocsigen-server-8-0-0/18564 "2026-09-28T14:20:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Vincent\_Balat](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/vincent_balat/32/2191_2.png) [@Vincent\_Balat](https://discuss.ocaml.org/u/Vincent_Balat)\
**Post date:** [September 28, 2026, 2:20pm UTC](https://discuss.ocaml.org/t/ann-ocsigen-server-8-0-0/18564/1 "2026-09-28T14:20:31Z")

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Hi everyone!

Ocsigen Server 8.0.0 is out, the web server written in OCaml, usable as an executable or as a library. Some highlights:

- **One command, no config file** : `ocsigenserver ./public` serves a directory, and `ocsigenserver --reverse-proxy http://localhost:9000` puts a proxy in front of your app, with compression and security headers already on.
- **Static files** now answer conditional requests (ETag, 304) and byte ranges, so seeking in a video or resuming a download just works.
- **zstd compression** , on a new bytesrw backend.
- A new **Securityheaders** extension.
- Access logs in the standard **Combined Log Format** , readable by the usual tools.
- The public modules were renamed (`Ocsigen.Server`, `Ocsigen.Config`, …). The new `ocsigenserver-compat` package keeps the old names, so existing code still builds.

`opam install ocsigenserver`

A release of Eliom and other projects compatible with this version will follow in a few weeks.

All the details are in the blog post: [Ocsigen Server 8.0.0: one command, and a modernized API — Ocsigen](https://ocsigen.org/blog/posts/ocsigenserver-8.0.0.html)

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**Author:** ![Haudegen](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/haudegen/32/716_2.png) [@Haudegen](https://discuss.ocaml.org/u/Haudegen)\
**Post date:** [September 28, 2026, 8:41pm UTC](https://discuss.ocaml.org/t/ann-ocsigen-server-8-0-0/18564/2 "2026-09-28T20:41:14Z")

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The recent progress in Ocsigen is impressive. Thank you very much.