http://www.gamesjobsjapan.com/
- Grasshopper
- Ubisoft Tokyo
- The Pokemon Company
- Konami
- Aiming, Inc. (also in Osaka)
- Zynga Japan
- DeNA (Tokyo?)
- Gree
- Make Leaps (Shibuya)
- Nintendo
- Intelligent Systems
- Tose
- Q-Games
- Access Games
- [Aiming, Inc.](http://aiming-inc.com/] (also in Tokyo)
- Yahoo! Japan
- Microsoft
- HP
- myGengo
- Fusion Systems Japan
- [http://www.sgi.co.jp/](SGI Japan)
- IBM
- Cookpad
- [Cybozu Labs](Cybozu Labs)
- Oracle
- Lunascape
- Rakuten
- Trend Micro
- Cybozu
- Netyear
- Groupon Japan
- Mozilla
- Culture Japan (Ruby on Rails)
Automattic (based in San Francisco, but has an engineer [Naoko McCracken] working in Tokyo)
CSS working group WordCamp
@NARKOZ: Thanks!