Extensible Operating System Software

• Forth@
• Oberon@
• Smalltalk@

• Computers: Programming: Languages: Language-OS Hybrids 
• Computers: Programming: Languages: Reflective 

• BITS: The Component Based Operating System  - Details the operating system's structure consisted of independent components. Profiles the developers involved in the project.
• Caching Model of Operating System Kernel Functionality  - Documentation of the project involved in studying the cache kernel interface. Presented by David R. Cheriton and Kenneth J. Duda.
• Extensible Operating Systems  - Variety of Unix operating system provided for customization of system structure for different application requirements.