Ocena, Doni - Doni's Tools
- Java tools: a utility for searching the entire environment classpath for a particular class; utility to combine two or more jar files into one. C# programs: text editor, chat system, and others. All software with sources.
- http://www.cs.nyu.edu/~dro207

Olszynski, Slawomir
- Programs with sources in languages: C, C++, Java, Assembler. Profes Chat project.
- http://www.zawodowiec.net/

Orriss, David
- Programming; XML, Java, Windows and PalmOS development. Also cover Java programming tips and techniques with JBuilder from Inprise. Home to the JBuilder webring.
- http://www.davenet.net/