It's much better suited for open source projects than GitHub, not only due to the powerful issue tracker and other community features. An incomplete list of pr

It's much better suited for open source projects than GitHub, not only due to the powerful issue tracker and other community features. An incomplete list of projects using it, some of them VERY large: - Blender (https://developer.blender.org/ https://developer.blender.org/) - LLVM (http://reviews.llvm.org/ http://reviews.llvm.org/) - Haskell (https://phabricator.haskell.org https://phabricator.haskell.org) - Wikimedia (after lots of discussion and a lengthy selection process, https://phabricator.wikimedia.org/ https://phabricator.wikimedia.org/) - FreeBSD (https://reviews.freebsd.org/ https://reviews.freebsd.org/) - Fedora (in some places, for example: https://phab.qadevel.cloud.fedoraproject.org/ https://phab.qadevel.cloud.fedoraproject.org/) - Khan Academy (https://phabricator.khanacademy.org/ https://phabricator.khanacademy.org/) - Enlightenment (https://phab.enlightenment.org/ https://phab.enlightenment.org/) - KDE (https://phabricator.kde.org/ https://phabricator.kde.org/) - Freedesktop (https://phabricator.freedesktop.org https://phabricator.freedesktop.org) - lighttpd (https://review.lighttpd.net https://review.lighttpd.net) - Kolab (https://git.kolab.org/ https://git.kolab.org/) - ... Wikimedia hat lots of content about their choice and the migration process: https://www.mediawiki.org/wiki/Phabricator/FAQ https://www.mediawiki.org/wiki/Phabricator/FAQ Phabricator has been in use as a production tool for years and it shows. It is much more sophisticated in terms of workflow and real-world use than alternatives.