PSD Ecosystem Documentation

This repository collects project, software, infrastructure, and licensing documents related to the PSD Ecosystem. It currently consists primarily of PDF publications, with a small number of editable ODT documents and a plain-text proposal. The Turkish README is also available.

Document Library

PSD Ecosystem and GNU/Linux

• PSD Ecosystem, document 1
• PSD Ecosystem, document 2
• PSD Ecosystem, document 3
• What Is PSD?
• Civilian PSD GNU/Linux Copyleft

User Interfaces and Development

• PSD TUI and PSD TUI, document 2
• C++ Kernel
• Kernel Programming 101
• Framework-based AI versus OS-integrated AI (Turkish)
• Linux and GNU developers: forking the Linux kernel and licensing (Turkish)
• Can I Write Userspace Drivers with C++ for Hurd?
• Hurd
• Linux and C++
• Memory Management with C++
• Network Subsystem for Linux
• Unix Development (editable ODT)

Community, Organizations, and Services

• KamuNet
• DAO (editable ODT)
• QB Networks startup proposal (editable ODT; plain text)
• Serebral
• MassCollabs services

Licensing

• Licensing 101 and Licensing 101, document 2
• BSD 3-Clause and BNGPL comparison
• Framework under BNGPL 1.0 or later
• Military BNGPL licensing
• BNGPL 1.0, BNGPL 2.0, and BNGPL 3.0
• GNU Affero General Public License 3.0
• License exception: the civilian PSD GNU/Linux copyleft document is identified as AGPLv3-or-later.

Memory

• Memory overview
• Memory allocation, document 1
• Memory allocation, document 2

Project History

The repository's development, from its first commit onward, is summarized below:

• October 7, 2026: Started the collection with three PSD Ecosystem publications and added two PSD TUI publications.
• October 8, 2026: Added documents on C++ kernels, Hurd, C++ userspace drivers, Linux, memory management, Linux networking, and KamuNet.
• October 9, 2026: Added licensing guides, DAO publications, an introduction to PSD, and the QB Networks startup proposal. Established repository basics with .gitignore, README.md, and an initial MIT LICENSE.
• October 10, 2026: Added Unix development material and published BNGPL 1.0, updating the root license and README.
• October 11, 2026: Added publications comparing BSD 3-Clause and BNGPL, presenting a BNGPL framework, documenting LibreOffice support for Serebral, and describing MassCollabs services.
• October 12, 2026: Published BNGPL 2.0 and 3.0 and updated the root license and README; added military BNGPL material and recorded an AGPLv3-or-later exception for the civilian PSD GNU/Linux copyleft publication.
• October 18, 2026: Added three memory publications.
• October 18, 2026: Added the AGPL 3.0 license text and documented the complete project history and license terms in this repository.
• October 18, 2026: Added the Kernel Programming 101 publication.
• October 18, 2026: Added work.pdf on framework-based versus OS-integrated AI, and linuxgnudevelopers.pdf on forking the Linux kernel and its GPLv2, GPLv3, and AGPLv3 licensing implications.

The ChangeLog records changes from the first commit through the latest project commit and names the documents added at each stage.

License

Copyright (c) 2026-2027 PSD Authors.

Unless a document-specific exception applies, this repository is licensed under the Broad Netwide General Public License (BNGPL), Version 3.0, or a later version officially released by the Project Owner that permits that upgrade path. See LICENSE and the BNGPL 3.0 text for the terms. The exception for psdgnulinux_sivil_copyleft.pdf is recorded in exception.md.

This material is provided "as is," without warranty. If it is conveyed as a binary or deployed through a cloud or SaaS interface, the applicable BNGPL terms require access to the copyright and license notices as specified in the license.