Watchers
- AkiraHagino
- arcizancraftsman-software, Inc.
- atsfour
- cedretaberTokyo / Japan
- gakuzzzzTech to Value
- hiraivaOpt, Inc. / Demand Side Science, Inc.
- hirakik
- hiroakii77OPT Inc.
- hiroshist
- hnarita
- hoshinodisTokyo, Japan
- jhcloos
- kamiike-optLaquda Inc,
- Keita-NTokyo
- mshibuyaMercari, Inc.
- mya-mo
- nagaoka-akihiko
- natsuume
- opt-readonlyOpt, Inc.
- ovrmrwOPT, Inc.
- RockFriend
- saikyouyaki
- sh0heiTokyo, Japan
- sh1okoh
- shogiai
- t-mochizukiJapan
- tanaka-hidekazu
- technicakidzOpt, Inc.
- thattori
- ushjp
- vertical-blanktakadanobaba
- yamaguchi-opt
- yamashita1238opt
- yo-inoue
- yorishigeito
- yuichi-nishimura