- Version: 2.INDEV-STABLE
- License: Plan 12 Open License Version 3
- Status: Early Alpha
- Comment: The Plan 12 specification
- Version: 6.INDEV-STABLE
- License: Plan 12 Open License Version 3
- Status: Early Alpha
- Comment: The reference for Plan 12, Class 1 against version 2.INDEV-STABLE