The following publications are currently available.
| AX01 | The COM/DCOM Reference (HTML) |
| C012 | Nostro Account Access (PDF) |
| C013 | CDSA/CSSM Authentication: Human Recognition Service (HRS) API V2 (PDF) |
| C014 | Application Response Measurement Issue 3.0 Java Binding (PDF) |
| C031 | Base Definitions, Issue 6 [XBD] (HTML) |
| C032 | System Interfaces, Issue 6 - 3 Volumes [XSH] (HTML) |
| C033 | Shell and Utilities, Issue 6 - 2 Volumes [XCU] (HTML) |
| C034 | Rationale (Informative), Issue 6 [XRAT] (HTML) |
| C035 | COE Security Software Requirements Specification (SSRS) (HTML) (PDF) |
| C040 | Interconnect Transport API (IT-API), Issue 1.0 (PDF) |
| C041 | Application Response Measurement (ARM) Issue 4.0 V2 - C Binding (PDF) |
| C042 | Application Response Measurement (ARM) Issue 4.0 V2 - Java Binding (PDF) |
| C046 | Base Definitions, Issue 6, 2004 Edition [XBD] (HTML) |
| C047 | System Interfaces, Issue 6, 2004 Edition [XSH] (HTML) |
| C048 | Shell and Utilities, Issue 6, 2004 Edition [XCU] (HTML) |
| C049 | Rationale (Informative), Issue 6, 2004 Edition [XRAT] (HTML) |
| C050 | Extended Sockets API (ES-API), Issue 1.0 (PDF) |
| C051 | Systems Management: Common Management Programming Interface (CMPI) (PDF) |
| C054 | RNIC Programming Interface (RNICPI), Version 1.0 (PDF) |
| C055 | Interconnect Transport API (IT-API), Version 2.1 (PDF) |
| C061 | Systems Management: Common Manageability Programming Interface (CMPI) (PDF) |
| C062 | Extended API Set, Part 1 (PDF) |
| C063 | Extended API Set, Part 2 (PDF) |
| C064 | Extended API Set, Part 3 (PDF) |
| C065 | Extended API Set, Part 4 (PDF) |
| C066 | DRDA V4 Vol. 1: Distributed Relational Database Architecture (PDF) |
| C067 | DRDA V4 Vol. 2: Formatted Data Object Content Architecture (PDF) |
| C068 | DRDA V4 Vol. 3: Distributed Data Management Architecture (PDF) |
| C071 | Application Response Measurement (ARM) Issue 4.1 V1 - C Binding (PDF) |
| C072 | Application Response Measurement (ARM) Issue 4.1 V1 - Java Binding (PDF) |
| C192 | COBOL Language (PDF) |
| C193 | Distributed TP: The XA Specification (PDF) |
| C194 | Byte Stream File Transfer (BSFT) (PDF) |
| C195 | IPC Mechanisms for SMB (PDF) |
| C206 | Management Protocol Profiles (XMPP) (PDF) |
| C209 | Protocols for X/Open PC Interworking: SMB, Version 2 (PDF) |
| C303 | ACSE/Presentation Services API (XAP) (PDF) |
| C305 | Message Store API (PDF) |
| C306 | Systems Management: Management Protocols API (XMP) (PDF) |
| C307 | Data Management: SQL Remote Database Access (PDF) |
| C309 | DCE: Remote Procedure Call (PDF) |
| C310 | DCE 1.1: Time Services Specification (PDF) |
| C311 | DCE 1.1: Authentication and Security Services (HTML) (PDF) |
| C315 | OSI-Abstract-Data Manipulation API (XOM), Issue 2 (PDF) |
| C316 | API to Electronic Mail (X.400), Issue 2 (PDF) |
| C317 | API to Directory Services (XDS), Issue 2 (PDF) |
| C320 | Motif Toolkit API (PDF) |
| C321 | Calendaring and Scheduling API (XCS) (PDF) |
| C323 | XCDE Services and Applications (PDF) |
| C324 | XCDE Definitions and Infrastructure (PDF) |
| C403 | Federated Naming: The XFN Specification (PDF) |
| C408 | Remote Operations Service Element (XAP-ROSE) API (PDF) |
| C409 | ACSE/Presentation: Transaction Processing API (XAP-TP) (PDF) |
| C411 | X.25 Programming Interface using XTI (XX25) (PDF) |
| C415 | FTAM High-level API (XFTAM), Version 2 (PDF) |
| C419 | Distributed TP: The XCPI-C Specification, Version 2 (PDF) |
| C423 | Systems Management: Common Management Facilities (XCMF) (HTML) (PDF) |
| C425 | Systems Management: Backup Services API (XBSA) (HTML) (PDF) |
| C427 | Systems Management: Universal Measurement Architecture (HTML) (PDF) |
| C429 | Systems Management: Data Storage Management (XDSM) API (HTML) (PDF) |
| C430 | Distributed Software Administration - DCE Interoperability (HTML) (PDF) |
| C434 | System Interface Definitions, Issue 4, Version 2 (PDF) |
| C435 | System Interfaces and Headers, Issue 4, Version 2 (PDF) |
| C436 | Commands and Utilities, Issue 4, Version 2 (PDF) |
| C438 | Networking Services, Issue 4 (PDF) |
| C441 | Generic Security Service API (GSS-API) Base (PDF) |
| C449 | Data Management: Structured Query Language (SQL), Version 2 (PDF) |
| C451 | Data Management: SQL Call Level Interface (CLI) (PDF) |
| C501 | File System Safe UCS Transformation Format (UTF-8) (PDF) |
| C502 | Systems Management: GDMO to XOM Translation Algorithm (PDF) |
| C504 | Distributed TP: The TX (Transaction Demarcation) Specification (PDF) |
| C505 | Distributed TP: The TxRPC Specification (PDF) |
| C506 | Distributed TP: The XATMI Specification (PDF) |
| C507 | Window Management (X11R5): X Window System Protocol (PDF) |
| C508 | Window Management (X11R5): Xlib - C Language Binding (PDF) |
| C509 | Window Management (X11R5): X Toolkit Intrinsics (PDF) |
| C510 | Window Management (X11R5): File Formats & Appln. Conventions (PDF) |
| C520 | Multiprotocol Transport Networking (XMPTN): Address Mapper (PDF) |
| C521 | Multiprotocol Transport Networking (XMPTN): Access Node (PDF) |
| C522 | Multiprotocol Transport Networking (XMPTN): Data Formats (PDF) |
| C523 | Networking Services, Issue 5 (HTML) (PDF) |
| C529 | X/Open Baseline Security Services (XBSS) (PDF) |
| C604 | Commands and Utilities, Issue 5 (PDF) |
| C605 | System Interface Definitions, Issue 5 (PDF) |
| C606 | System Interfaces and Headers, Issue 5 - Two Volumes (PDF) |
| C607 | OSI-Abstract-Data Manipulation API (XOM), Issue 3 (PDF) |
| C608 | API to Directory Services (XDS), Issue 3 (PDF) |
| C609 | API to Electronic Mail (X.400), Issue 3 (PDF) |
| C610 | X/Open Curses, Issue 4, Version 2 (PDF) |
| C611 | Structured Transaction Definition Language (STDL) (PDF) |
| C616 | Portable Layout Services: Context-dependent and Directional Text (HTML) (PDF) |
| C701 | Systems Management: Distributed Software Administration (XDSA) (HTML) (PDF) |
| C702 | Protocols for Interworking: XNFS, Version 3W (HTML) (PDF) |
| C705 | DCE 1.1: Directory Services (HTML) (PDF) |
| C706 | DCE 1.1: Remote Procedure Call (HTML) (PDF) |
| C802 | Inter-Domain Management: Specification & Interaction Translation (HTML) (PDF) |
| C806 | Software License Use Management (XSLM) (HTML) (PDF) |
| C807 | Systems Management: Application Response Measurement (ARM) (HTML) (PDF) |
| C808 | Networking Services (XNS), Issue 5.2 (HTML) (PDF) |
| C809 | Resource Reservation Setup Protocol API (RAPI) (HTML) (PDF) |
| C810 | Transport Provider Interface (TPI) Version 2 (HTML) (PDF) |
| C811 | Data Link Provider Interface (DLPI) Version 2 (HTML) (PDF) |
| C903 | X Window System (X11R6): Protocol (PDF) |
| C908 | Authorization (AZN) API (HTML) (PDF) |
| C910 | Application Instrumentation and Control API (AIC), Version 1.0 (HTML) (PDF) |
| C914 | Common Security: CDSA and CSSM, Version 2 (with corrigenda) (HTML) (PDF) |
| E041 | Secure Mobile Architecture (SMA) Vision & Architecture (PDF) |
| E042 | Mobile and Directory Architecture (PDF) |
| E401 | Universal Multiple-Octet Coded Char. Set Coexistence & Migration (PDF) |
| E402 | Getting into Objects (PDF) |
| E403 | Security in Interworking Specifications (PDF) |
| E408 | Internationalisation of X/Open Specifications (PDF) |
| E501 | Desktop Internationalisation (PDF) |
| E503 | Desktop Security (PDF) |
| E508 | Manageability of Interworking Specifications (PDF) |
| E605 | Security in Federated Naming (HTML) (PDF) |
| F035 | TETware 3.7 Release Notes (PDF) |
| F036 | TETware 3.7 Programmers Guide (PDF) |
| F037 | TETware 3.7 Users Guide (PDF) |
| F038 | TETware 3.7 Installation Guide for UNIX® Systems (PDF) |
| F039 | TETware 3.7 Installation Guide for Win32 Systems (PDF) |
| F051 | TETware Training Guide, 2005 edition (PDF) |
| G031 | Security Design Patterns (PDF) |
| G045 | SLA Management Handbook (PDF) |
| G064 | Extending the Universal Data Element Framework (UDEF), Version 1.0 (PDF) |
| G071 | Core Identifier Framework Matrix (PDF) |
| G206 | Defining and Buying Secure Open Systems (PDF) |
| G207 | Systems Management: Reference Model (PDF) |
| G211 | ISO and Internet Management: Coexistence and Interworking (PDF) |
| G212 | Distributed Computing Services (XDCS) Framework (PDF) |
| G260 | Secure Messaging Toolkit (PDF) |
| G302 | Systems Management: Managed Object Guide (XMOG) (PDF) |
| G304 | Internationalisation Guide, Version 2 (PDF) |
| G410 | Distributed Security Framework (PDF) |
| G501 | XPG3-XPG4 Base Migration Guide, Version 2 (PDF) |
| G502 | Locale Registry Procedures, Version 2 (PDF) |
| G504 | Distributed Transaction Processing: Reference Model, Version 3 (PDF) |
| G505 | Data Management: Reference Model (PDF) |
| G506 | Multiprotocol Transport Networking (MPTN) Architecture, Version 2 (PDF) |
| G508 | Architecture Neutral Distribution Format (XANDF) (PDF) |
| G801 | Architecture for Public-Key Infrastructure (APKI) (PDF) |
| H071 | Enterprise Security Architecture (PDF) |
| H072 | Enterprise-Wide Security: Authentication & Single Sign-On (PDF) |
| H073 | Business Services Architecture (PDF) |
| H074 | Interoperability: Electronic Mail Systems (PDF) |
| H075 | Interoperability (PDF) |
| H076 | Enterprise-Wide Security (PDF) |
| H077 | Enterprise Directory Services Integration (PDF) |
| I031 | LDAP Features for Certification (HTML) (PDF) |
| I041 | LDAP Features for Certification, Version 2 (PDF) |
| I061 | TOGAF Version 8.1.1 Enterprise Edition (HTML) |
| I801A | Open Group Technical Publications: Writing Style (PDF) |
| I801B | Open Group Technical Publications: Documentation Tools (PDF) |
| I901 | Architecture Description Markup Language (ADML) Version 1 (HTML) |
| I911 | TOGAF Version 7 'Technical Edition' (HTML) |
| I913 | TOGAF 7 Professional Services: Code of Practice (HTML) |
| I914 | TOGAF 7 Core Definition (HTML) |
| I915 | TOGAF Version 8.1 'Enterprise Edition' (HTML) |
| I916 | TOGAF 8 Professional Services: Code of Practice (HTML) |
| I917 | TOGAF 8 Core Definition (HTML) |
| J301 | RDA Mapping for TCP/IP (PDF) |
| J405 | SPIRIT Platform Blueprint (SPIRIT Issue 3.0) (HTML) |
| K001 | Directory-Enabled Enterprise (PDF) |
| K011 | Directory in the Key Management Infrastructure (PDF) |
| K021 | Executive on the Move (PDF) |
| K022 | Interoperable Enterprise (PDF) |
| K023 | Identity Management (PDF) |
| K031 | Certification (PDF) |
| K042 | Measurement of Quality of Digital Information (PDF) |
| K061 | Identifiers in the Enterprise (PDF) |
| P217 | Document Interchange Formats (PDF) |
| P409 | DCE 1.1: Distributed File Service (PDF) |
| P437 | Systems Management: Event Management Service (XEMS) (HTML) (PDF) |
| P441 | Distributed Audit Service (XDAS) (HTML) (PDF) |
| P442 | Generic Cryptographic Service API (GCS-API) Base (PDF) |
| P502 | Common Object Services, Volume 2 (PDF) |
| P521 | Systems Management: File System and Scheduling Utilities (FSSU) (PDF) |
| P524 | XTI - SPX/IPX Transport Provider (PDF) |
| P527 | Architecture Neutral Distribution Format (XANDF) (PDF) |
| P701 | Systems Management: Topology Service (HTML) (PDF) |
| P702 | X/Open Single Sign-On Service (XSSO) - Pluggable Authentication (HTML) (PDF) |
| Q051 | Architecture Forum (PDF) |
| Q052 | Directory Interoperability (PDF) |
| Q053 | Directory Certification (PDF) |
| Q054 | Messaging (PDF) |
| Q055 | Enterprise Management/QoS (PDF) |
| Q056 | OpenGIS Test Engine (PDF) |
| Q057 | Platform (PDF) |
| Q058 | Real-time & Embedded Systems (PDF) |
| Q059 | Security Forum (PDF) |
| Q060 | Test Suites (PDF) |
| Q061 | TOGAF 7 Certification (PDF) |
| Q062 | TOGAF 8 Certification (PDF) |
| Q063 | UNIX Certification (PDF) |
| Q064 | VSLDAP (PDF) |
| Q065 | WAP2 ICS Editor (PDF) |
| Q066 | TETware (PDF) |
| Q067 | Advanced Research Group (PDF) |
| Q071 | Identity Management Forum (PDF) |
| Q072 | Critical Infrastructure Work Group (PDF) |
| Q073 | UDEF (PDF) |
| Q073C | UDEF (Chinese Version) (PDF) |
| Q073D | UDEF (Dutch Version) (PDF) |
| Q073F | UDEF (French Version) (PDF) |
| Q073G | UDEF (German Version) (PDF) |
| Q074 | Service-Oriented Architecture (PDF) |
| Q075 | Semantic Interoperability (PDF) |
| Q076 | Adaptive Business Solutions Work Group (PDF) |
| Q081 | IT Specialist Certification (ITSC) (PDF) |
| Q082 | IT Architect Certification (ITAC) (PDF) |
| Q083 | Collaboration Services (PDF) |
| Q084 | ArchiMate Forum (PDF) |
| S020 | Security Interface Specifications: Auditing and Authentication (PDF) |
| S209 | Document Interchange Reference Model (PDF) |
| S307 | GSS-API Security Attribute and Delegation Extensions (PDF) |
| S308 | Distributed Internationalisation Services, Version 2 (PDF) |
| S423 | Distributed TP: The XA+ Specification, Version 2 (PDF) |
| S426 | Systems Management: Manageability Guidelines (PDF) |
| S503 | Distributed Internationalisation Framework (PDF) |
| T041 | Single UNIX Specification, Version 3, 2004 Edition (8 Volumes) (HTML) |
| T912 | Single UNIX Specification, Version 2, 1998 Edition (PDF Set) (HTML) |
| T912X | Single UNIX Specification, Version 2 (UNIX 98) (HTML) |
| W012 | Standardization Priorities for the Directory (PDF) |
| W031 | Intrusion Attack and Response Workshop (inc. Full Script) (PDF) |
| W031A | Intrusion Attack and Response Workshop (PDF) |
| W032 | LDAP Certified: Consistent Results for LDAP Customers (PDF) |
| W033 | Boundaryless Information Flow™ Reference Architecture (PDF) |
| W041 | Identity Management (PDF) |
| W042 | Preventing IT Earthquakes (PDF) |
| W043 | Business Executive's Guide to IT Architecture (PDF) |
| W044 | Approaches to Boundaryless Information Flow™ Architecture (PDF) |
| W051 | The Open Group IT Architect Certification Program (Summary) (PDF) |
| W052 | TOGAF ADM and MDA (PDF) |
| W053 | The Open Group IT Architect Certification Program (PDF) |
| W054 | TOGAF/MDA Mapping (PDF) |
| W055 | Guide to Security Architecture in TOGAF ADM (PDF) |
| W061 | TOGAF and the US Department of Defense Architecture Framework (DoDAF) (PDF) |
| W071 | TOGAF™ and ITIL® (PDF) |
| W073 | TOGAF™ ADM/MDA® Synergy Project (PDF) |
| W074 | Service-Oriented Architecture (SOA) (PDF) |
| W075 | Information Security Strategy, Version 1.0 (PDF) |
| W076 | Why does Enterprise Architecture Matter? (PDF) |
| W077 | TOGAF™ ADM/MDA® Synergy Project (PDF) |
| W078 | Enterprise Architecture and IT Service Management (PDF) |
| W079 | The Open Group IT Specialist Certification Program (PDF) |
| W081 | The Role of Cisco SONA in EA Frameworks & Strategies (PDF) |
| W201 | An Introduction to Boundaryless Information Flow™ (PDF) |
| W202 | Open Standards in the Field of Boundaryless Information Flow™ (PDF) |
| W801 | Network Computing - A New Business Paradigm (HTML) (PDF) |
| W802 | Distributed Computing for the Extended Enterprise (HTML) (PDF) |
| W901 | Market Drivers for The Open Group Mobile Management Forum (HTML) (PDF) |
| W902 | Assuring Interoperability for the Directory-Enabled Enterprise (PDF) |
| X01OB | Common Object Request Broker Architecture (CORBA) V2.3 (HTML) (PDF) |
| X02CP | COE Platform V1 (HTML) (PDF) |
| X02CQ | COE Platform Government-Supplied Kernel Source (HTML) (PDF) |
| X02CR | COE Platform Security (HTML) (PDF) |
| X02CS | COE Platform Standards (HTML) (PDF) |
| X02TA | TOGAF 7 Certified (HTML) (PDF) |
| X02TB | TOGAF 7 Tool Support (HTML) (PDF) |
| X02TC | TOGAF 7 Professional Services (HTML) (PDF) |
| X02TD | TOGAF 7 Training (HTML) (PDF) |
| X03CX | Commands and Utilities V4 (HTML) (PDF) |
| X03DJ | LDAP Certified (HTML) (PDF) |
| X03LM | C Language V2 (HTML) (PDF) |
| X03SD | Internationalized System Calls and Libraries Extended V3 (HTML) (PDF) |
| X03XY | UNIX 03 (HTML) (PDF) |
| X041 | COE Platform Certification Policy, Version 2 (PDF) |
| X042 | WAP Certification Policy (PDF) |
| X04CD | COE Platform Standards V2 (HTML) (PDF) |
| X04CG | COE Platform Government-Supplied Kernel Source V2 (HTML) (PDF) |
| X04CP | COE Linux Platform V1 (HTML) (PDF) |
| X04CQ | COE Linux Platform Government-Supplied Kernel Source (HTML) (PDF) |
| X04CS | COE Linux Platform Specifications (HTML) (PDF) |
| X04DJ | LDAP Certified V2 (HTML) (PDF) |
| X04IP | Internet Protocol Version 6 (HTML) (PDF) |
| X04PL | COE Platform V2 (HTML) (PDF) |
| X04PS | Internet Server V2 (HTML) (PDF) |
| X04TB | TOGAF 8 Tool Support (HTML) (PDF) |
| X04TC | TOGAF 8 Professional Services (HTML) (PDF) |
| X04XY | UNIX 03 Server (HTML) (PDF) |
| X050 | TOGAF Certification Policy, Version 1.1 (PDF) |
| X053 | IT Architect Certification Program: Accreditation Policy (PDF) |
| X054 | IT Architect Certification Program: Accreditation Requirements (PDF) |
| X05TA | TOGAF 8 Certified (HTML) (PDF) |
| X05TD | TOGAF 8 Training (HTML) (PDF) |
| X062 | IT Architect Certification Program: Conformance Requirements (PDF) |
| X071 | IT Architect Certification Program: Certification Policy (PDF) |
| X072 | IT Architect Certification Program: Conformance Requirements (Level 3) (PDF) |
| X073 | IT Specialist Certification (ITSC): Certification Policy (PDF) |
| X075 | IT Specialist Certification (ITSC): Accreditation Policy (PDF) |
| X076 | IT Specialist Certification (ITSC): Accreditation Requirements (PDF) |
| X084 | IT Specialist Certification (ITSC): Conformance Requirements (PDF) |
| X085 | IT Architect Certification Program: Conformance Requirements (Level 3) (PDF) |
| X221 | Practical Guide to the Open Brand (HTML) (PDF) |
| X982 | The Open Brand Trademark License Agreement (TMLA) January 1998 (PDF) |
| X98AD | Software Administration (HTML) (PDF) |
| X98CU | Commands and Utilities (HTML) (PDF) |
| X98CV | Commands and Utilities V2 (HTML) (PDF) |
| X98CW | Commands and Utilities V3 (HTML) (PDF) |
| X98DM | ISAM (HTML) (PDF) |
| X98DR | Relational Database (HTML) (PDF) |
| X98DS | Calendaring and Scheduling (HTML) (PDF) |
| X98GA | Directory Access (HTML) (PDF) |
| X98GB | BSFT (HTML) (PDF) |
| X98GG | X.400 Gateway (HTML) (PDF) |
| X98GM | X.400 Message Access (HTML) (PDF) |
| X98GN | Network File System (HTML) (PDF) |
| X98GP | Sockets (HTML) (PDF) |
| X98GQ | Sockets V2 (HTML) (PDF) |
| X98GS | Transport Service (XTI) (HTML) (PDF) |
| X98GV | Transport Service (XTI) V2 (HTML) (PDF) |
| X98LA | Ada Language (HTML) (PDF) |
| X98LC | COBOL Language (HTML) (PDF) |
| X98LF | FORTRAN Language (HTML) (PDF) |
| X98LL | C Language (HTML) (PDF) |
| X98LP | Pascal Language (HTML) (PDF) |
| X98MC | CPI-C (HTML) (PDF) |
| X98MM | Magnetic Media (HTML) (PDF) |
| X98OR | Common Object Request Broker Architecture (CORBA) (HTML) (PDF) |
| X98PL | LMX Server (HTML) (PDF) |
| X98PN | (PC)NFS Server (HTML) (PDF) |
| X98PS | Internet Server (HTML) (PDF) |
| X98RT | Multi-Purpose Realtime Operating System (HTML) (PDF) |
| X98SC | Internationalized System Calls and Libraries (HTML) (PDF) |
| X98SE | Internationalized System Calls and Libraries Extended (HTML) (PDF) |
| X98SI | Internationalized System Calls and Libraries Extended V2 (HTML) (PDF) |
| X98SS | Secure Communications Services (HTML) (PDF) |
| X98UA | X Window System Application Interface (HTML) (PDF) |
| X98UB | X Window System Application Interface V2 (HTML) (PDF) |
| X98UC | Motif Toolkit (HTML) (PDF) |
| X98UD | X Window System Display (HTML) (PDF) |
| X98UT | Terminal Interfaces (HTML) (PDF) |
| X98UU | Internationalized Terminal Interfaces (HTML) (PDF) |
| X98XB | Base (HTML) (PDF) |
| X98XC | Base 95 (HTML) (PDF) |
| X98XD | Common Desktop Environment (HTML) (PDF) |
| X98XE | UNIX 98 Server (HTML) (PDF) |
| X98XS | Baseline Security 98 (HTML) (PDF) |
| X98XU | UNIX 95 (HTML) (PDF) |
| X98XW | UNIX 98 Workstation (HTML) (PDF) |
| X98XX | UNIX 98 (HTML) (PDF) |
| X99DI | LDAP 2000 (HTML) (PDF) |
| Y021 | DMTF and The Open Group Go Beyond 'Press Release Partnership' (PDF) |
| Y022 | The SIF Plan: Advance Education through Interoperability (PDF) |
| Y023 | Uniting the Linux Market: The LSB Certification Program (PDF) |
| Y031 | The Directory Interoperability Forum: A Superior Model (PDF) |
| Y032 | Boundaryless Information Flow Reference Architecture (PDF) |
| Y081 | NASPL and The Open Group (PDF) |
| Y082 | The Open Group Architecture Principles (PDF) |
