| C012 | Nostro Account Access |
| C013 | CDSA/CSSM Authentication: Human Recognition Service (HRS) API V2 |
| C014 | Application Response Measurement Issue 3.0 Java Binding |
| C031 | Base Definitions, Issue 6 [XBD] |
| C032 | System Interfaces, Issue 6 - 3 Volumes [XSH] |
| C033 | Shell and Utilities, Issue 6 - 2 Volumes [XCU] |
| C034 | Rationale (Informative), Issue 6 [XRAT] |
| C035 | COE Security Software Requirements Specification (SSRS) |
| C041 | Application Response Measurement (ARM) Issue 4.0 V2 - C Binding |
| C042 | Application Response Measurement (ARM) Issue 4.0 V2 - Java Binding |
| C046 | Base Definitions, Issue 6, 2004 Edition [XBD] |
| C047 | System Interfaces, Issue 6, 2004 Edition [XSH] |
| C048 | Shell and Utilities, Issue 6, 2004 Edition [XCU] |
| C049 | Rationale (Informative), Issue 6, 2004 Edition [XRAT] |
| C051 | Systems Management: Common Management Programming Interface (CMPI) |
| C061 | Systems Management: Common Manageability Programming Interface (CMPI) |
| C062 | Extended API Set, Part 1 |
| C063 | Extended API Set, Part 2 |
| C064 | Extended API Set, Part 3 |
| C065 | Extended API Set, Part 4 |
| C066 | DRDA V4 Vol. 1: Distributed Relational Database Architecture |
| C067 | DRDA V4 Vol. 2: Formatted Data Object Content Architecture |
| C068 | DRDA V4 Vol. 3: Distributed Data Management Architecture |
| C071 | Application Response Measurement (ARM) Issue 4.1 V1 - C Binding |
| C072 | Application Response Measurement (ARM) Issue 4.1 V1 - Java Binding |
| C192 | COBOL Language |
| C193 | Distributed TP: The XA Specification |
| C194 | Byte Stream File Transfer (BSFT) |
| C195 | IPC Mechanisms for SMB |
| C206 | Management Protocol Profiles (XMPP) |
| C209 | Protocols for X/Open PC Interworking: SMB, Version 2 |
| C303 | ACSE/Presentation Services API (XAP) |
| C305 | Message Store API |
| C306 | Systems Management: Management Protocols API (XMP) |
| C307 | Data Management: SQL Remote Database Access |
| C309 | DCE: Remote Procedure Call |
| C310 | DCE 1.1: Time Services Specification |
| C311 | DCE 1.1: Authentication and Security Services |
| C315 | OSI-Abstract-Data Manipulation API (XOM), Issue 2 |
| C316 | API to Electronic Mail (X.400), Issue 2 |
| C317 | API to Directory Services (XDS), Issue 2 |
| C320 | Motif Toolkit API |
| C321 | Calendaring and Scheduling API (XCS) |
| C323 | XCDE Services and Applications |
| C324 | XCDE Definitions and Infrastructure |
| C403 | Federated Naming: The XFN Specification |
| C408 | Remote Operations Service Element (XAP-ROSE) API |
| C409 | ACSE/Presentation: Transaction Processing API (XAP-TP) |
| C411 | X.25 Programming Interface using XTI (XX25) |
| C415 | FTAM High-level API (XFTAM), Version 2 |
| C419 | Distributed TP: The XCPI-C Specification, Version 2 |
| C423 | Systems Management: Common Management Facilities (XCMF) |
| C425 | Systems Management: Backup Services API (XBSA) |
| C427 | Systems Management: Universal Measurement Architecture |
| C429 | Systems Management: Data Storage Management (XDSM) API |
| C430 | Distributed Software Administration - DCE Interoperability |
| C434 | System Interface Definitions, Issue 4, Version 2 |
| C435 | System Interfaces and Headers, Issue 4, Version 2 |
| C436 | Commands and Utilities, Issue 4, Version 2 |
| C438 | Networking Services, Issue 4 |
| C441 | Generic Security Service API (GSS-API) Base |
| C449 | Data Management: Structured Query Language (SQL), Version 2 |
| C451 | Data Management: SQL Call Level Interface (CLI) |
| C501 | File System Safe UCS Transformation Format (UTF-8) |
| C502 | Systems Management: GDMO to XOM Translation Algorithm |
| C504 | Distributed TP: The TX (Transaction Demarcation) Specification |
| C505 | Distributed TP: The TxRPC Specification |
| C506 | Distributed TP: The XATMI Specification |
| C507 | Window Management (X11R5): X Window System Protocol |
| C508 | Window Management (X11R5): Xlib - C Language Binding |
| C509 | Window Management (X11R5): X Toolkit Intrinsics |
| C510 | Window Management (X11R5): File Formats & Appln. Conventions |
| C520 | Multiprotocol Transport Networking (XMPTN): Address Mapper |
| C521 | Multiprotocol Transport Networking (XMPTN): Access Node |
| C522 | Multiprotocol Transport Networking (XMPTN): Data Formats |
| C523 | Networking Services, Issue 5 |
| C529 | X/Open Baseline Security Services (XBSS) |
| C529Y | X/Open Baseline Security Services (XBSS) |
| C604 | Commands and Utilities, Issue 5 |
| C605 | System Interface Definitions, Issue 5 |
| C606 | System Interfaces and Headers, Issue 5 - Two Volumes |
| C607 | OSI-Abstract-Data Manipulation API (XOM), Issue 3 |
| C608 | API to Directory Services (XDS), Issue 3 |
| C609 | API to Electronic Mail (X.400), Issue 3 |
| C610 | X/Open Curses, Issue 4, Version 2 |
| C611 | Structured Transaction Definition Language (STDL) |
| C616 | Portable Layout Services: Context-dependent and Directional Text |
| C701 | Systems Management: Distributed Software Administration (XDSA) |
| C702 | Protocols for Interworking: XNFS, Version 3W |
| C705 | DCE 1.1: Directory Services |
| C706 | DCE 1.1: Remote Procedure Call |
| C802 | Inter-Domain Management: Specification & Interaction Translation |
| C806 | Software License Use Management (XSLM) |
| C807 | Systems Management: Application Response Measurement (ARM) |
| C808 | Networking Services (XNS), Issue 5.2 |
| C809 | Resource Reservation Setup Protocol API (RAPI) |
| C810 | Transport Provider Interface (TPI) Version 2 |
| C811 | Data Link Provider Interface (DLPI) Version 2 |
| C903 | X Window System (X11R6): Protocol |
| C908 | Authorization (AZN) API |
| C910 | Application Instrumentation and Control API (AIC), Version 1.0 |
| C914 | Common Security: CDSA and CSSM, Version 2 (with corrigenda) |
