RubyKaigi2018.days.third
Jun 1 – 2, 2018
kaigi ruby (Owner)
Yuki Akamatsu
Yonezawa Makoto
Hiroki Tokutomi
原拓也
Sorah Fukumori
Shu Oogawara
中村勇介
Teppei Machida
hitoshi hasumi
Ippei Ogiwara (iogi)
Tomohiko Seo
Maciej Głowacki
まつもとりー
Kou Maeda (PenguinWorks)