Seoul Computer Club - Yongsan-based organization providing opportunities for people to share knowledge, experiences, and discussion of topics of interest to club members and other local computer users.
Seoul International Women's Association (SIWA) - Volunteer organization to further opportunities for sharing social, cultural, welfare, and community interests among women of different nationalities.
Stronghold of Warriors Gate - Local branch of the Society for Creative Anachronism, a non-profit organization dedicated to re-enacting medieval and Renaissance periods, located in Seoul.
