RubyKaigi2018.days.second
May 31 – Jun 1, 2018
kaigi ruby (Owner)
Yuki Akamatsu
Yonezawa Makoto
原拓也
Sorah Fukumori
中村勇介
Teppei Machida
hitoshi hasumi
Ippei Ogiwara (iogi)
Tomohiko Seo
Maciej Głowacki
まつもとりー
Kou Maeda (PenguinWorks)