1. The difficulty in development and maintenance of Open-Source Software Masahiko ISHIKAWA Software Research Associates, Inc. Network engineer Web-based system developer Embedded system engineer

2. Masahiko ISHIKAWA(2005/10/24) Remarkable OSS background 1.Open-Source OS share 2.The characteristics of Open-Source community 3.Main-frame-derived products on OSS platform 4.I18N, L10N, M17N 5.Font issues

3. Masahiko ISHIKAWA(2005/10/24) The issues 1.Development issues 1.Developing OSS products on proprietary platform 2.The need of integrated tool suite 2.Maintenance issues 1.The growth of maintenance costs

4. Masahiko ISHIKAWA(2005/10/24) Developing OSS products on proprietary platform In case of developing Web browser on proprietary platform –Comparing with a browser by the proprietary platform vendor In case of developing Java application on proprietary Java VM In case of developing plug-in for a proprietary software –comparing the plug-in with other plug-in by the proprietary software vendor

5. Masahiko ISHIKAWA(2005/10/24) The need of Integrated tool suite In the case of proprietary software... –Rational suite And what about OSS software... ?

6. Masahiko ISHIKAWA(2005/10/24) The growth of maintenance costs In case of *BSD and Linux distributions Different system has different management system Besides, each software package has its own manners If a software is out of management system, it’s hard to manage for new maintainer without predecessor As such legacy system is born, because of (1) incomplete packaging system specs (2) ad-hoc maintenance rules