Credits the people behind mrJudge

Active Administrators

Ryan See Weixuan (rs, RI Baby/2004)
Benson Lin Zhan Li (bensonlzl, HCI JC1 Wabbit/2019)
Damian Ho Xu Yang (damian, HCI JC2/2018)
Clarence Chew Xuan Da (clarencechew, NUSH Year 3/2014)
Pang Wen Yuen (wenyuen, RI Sec 4/2015)
Li Da (lida, NUSH Staff)
Lim Li (limli, NUSH Alumni)
Zhang Guangxuan (guangxuan, RI Sec 4/2015)
Jeffrey Lee (jeff, NUSH Year 2/2015)
Ranald Lam Yun Shao (ranaldlys, RJ Alumni (2014))
Daniel Choo Zhenghao (0rang3, RI Alumni/2021)
Leong Eu-Shaun (shaun6809, RI JC1/2019)
Tan Chien Hao (tch1001, RI Sec 3/2018)
Chang Si Yuan (siyuan, RI Sec 3/2014)
Lorraine Neo (lorraineneo, RI Teacher)
Reporter (reporter, HCI Alumni)
Xingchen Huang (lovemathboy, NUSH Year 5/2017)
Tan Likai (likai, Not IOI Trainer 2018)
Estelle Lee (estelle, RGS Y3/2015)

Active Maintainers

Technical:

Ranald Lam
Gao Shan Sam
Lin Si Jie
Pang Wen Yuen

Content and Problems:

Pang Wen Yuen (RI)
Chang Si Yuan (RI)
Lim Li (NUSH)
Clarence Chew (NUSH)
Wang Zhi Jian (HCI)
Ho Jie Feng (HCI)

Developers

mrJudge 2009: Raymond Kang
mrJudge 2013: Ranald Lam
Pang Wen Yuen
mrJudge 2014 / mrJudge: Ranald Lam
Gao Shan Sam
mrJudge 2015 (Grading Backend): Ranald Lam
Gao Shan Sam