diff --git a/README.md b/README.md
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@@ -1225,6 +1225,7 @@ _See also [Ticketing](#ticketing), [Task management/To-do lists](#task-managemen
 - [Lavagna](http://lavagna.io) - Lavagna is an open-source issue/project management tool designed for small teams. Lightweight, pure Java, easy to install, easy to use. ([Source Code](https://github.com/digitalfondue/lavagna)) `GPL-3.0` `Java`
 - [Octobox](https://octobox.io/) `⚠` - Take back control of your GitHub Notifications. ([Source Code](https://github.com/octobox/octobox)) `AGPL-3.0` `Ruby`
 - [OpenProject](https://www.openproject.org) - OpenProject is a web-based project management system. ([Source Code](https://github.com/opf/openproject)) `GPL-3.0` `Ruby`
+- [Open Build Service](https://openbuildservice.org) - Build and distribute Linux binary packages from sources in an automatic, consistent and reproducible way. ([Demo](https://build.opensuse.org/), [Source Code](https://github.com/openSUSE/open-build-service/)) `GPL-3.0-only` `Ruby On Rails / Perl`
 - [Phabricator](http://phabricator.org/) - Collection of web applications that help build better software. ([Demo](https://secure.phabricator.com/), [Source Code](https://github.com/phacility/phabricator)) `Apache-2.0` `PHP`
 - [Phproject](http://www.phproject.org/) - High performance full-featured project management system. ([Demo](http://demo.phproject.org/), [Source Code](https://github.com/Alanaktion/phproject)) `GPL-3.0` `PHP`
 - [ProjeQtOr](https://www.projeqtor.org/) - A complete, mature, multi-user project management system with extensive functionality for all phases of a project. ([Demo](https://demo.projeqtor.org/), [Source Code](https://sourceforge.net/p/projectorria/code/HEAD/tree/branches/)) `AGPL-3.0` `PHP`