Danger hosts their website with GitLab Pages[0], iTerm hosts their issue tracker there[1], the game Xonotic is hosted on GitLab.com[2], and then VLC[3] and GNU[4] both have their own instances of GitLab.

[0]: https://gitlab.com/danger-systems/danger.systems

[1]: https://gitlab.com/gnachman/iterm2/issues

[2]: https://gitlab.com/groups/xonotic

[3]: https://code.videolan.org/videolan/VLCKit

[4]: https://git.gnu.io/explore/projects