• ISO / IEC 8824-1 (ITU-T Rec. X.680) - Information Technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation
• ISO / IEC 8824-2 (ITU-T Rec. X.681) - Information Technology - Abstract Syntax Notation One (ASN.1): Information object specification
• ISO / IEC 8824-3 (ITU-T Rec. X.682) - Information Technology - Abstract Syntax Notation One (ASN.1): Constraint specification
• ISO / IEC 8824-4 (ITU-T Rec. X.683) - Information Technology - Abstract Syntax Notation One (ASN.1): Parameterization of ASN.1 specifications
• ISO / IEC 8825-2 (ITU-T Rec. X.691) - Information Technology - ASN.1 encoding rules: Specification of Packed Encoding Rules (PER)
• ISO / IEC 8825-4 (ITU-T Rec. X.693) - Information Technology - ASN.1 encoding rules: XML encoding rules
• ISO / IEC 8825-5 (ITU-T Rec. X.694) - Information technology – ASN.1 encoding rules: Mapping W3C XML schema definitions into ASN.1

• ISO / IEC 8824-1 (ITU-T Rec. X.680) - Information Technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation
• ISO / IEC 8824-2 (ITU-T Rec. X.681) - Information Technology - Abstract Syntax Notation One (ASN.1): Information object specification
• ISO / IEC 8824-3 (ITU-T Rec. X.682) - Information Technology - Abstract Syntax Notation One (ASN.1): Constraint specification
• ISO / IEC 8824-4 (ITU-T Rec. X.683) - Information Technology - Abstract Syntax Notation One (ASN.1): Parameterization of ASN.1 specifications
• ISO / IEC 8825-2 (ITU-T Rec. X.691) - Information Technology - ASN.1 encoding rules: Specification of Packed Encoding Rules (PER)
• ISO / IEC 8825-4 (ITU-T Rec. X.693) - Information Technology - ASN.1 encoding rules: XML encoding rules
• ISO / IEC 8825-5 (ITU-T Rec. X.694) - Information technology – ASN.1 encoding rules: Mapping W3C XML schema definitions into ASN.1
• ISO 10303 STEP - Standard for exchange and sharing of product data
• ISO 13584 PLIB - Standard for component library structures, supporting many different sets of content
• ISO 15926 - Oil and Gas data repository model with extensive reference data
• ISO 20022-1:2004 Financial services -- UNIversal Financial Industry message scheme -- Part 1: Overall methodology and format specifications for inputs to and outputs from the ISO 20022 Repository
• ISO 20022-2:2007 Financial services -- UNIversal Financial Industry message scheme -- Part 2: Roles and responsibilities of the registration bodies
• ISO/TS 20022-3:2004 Financial services -- UNIversal Financial Industry message scheme -- Part 3: ISO 20022 modelling guidelines
• ISO/TS 20022-4:2004 Financial services -- UNIversal Financial Industry message scheme -- Part 4: ISO 20022 XML design rules
• ISO/TS 20022-5:2004 Financial services -- UNIversal Financial Industry message scheme -- Part 5: ISO 20022 reverse engineering

• ITU-T Recommendation X.500 - Information Technology - Open Systems Interconnection - The Directory: Overview of concepts, models and services
• ITU-T Recommendation X.501 - Information Technology - Open Systems Interconnection - The Directory: Models
• ITU-T Recommendation X.509 - Information Technology - Open Systems Interconnection - The Directory: Public-key and attribute certificate frameworks
• ITU-T Recommendation X.511 - Information Technology - Open Systems Interconnection - The Directory: Abstract service definition
• ITU-T Recommendation X.518 - Information Technology - Open Systems Interconnection - The Directory: Procedures for distributed operation
• ITU-T Recommendation X.519 - Information Technology - Open Systems Interconnection - The Directory: Protocol specifications
• ITU-T Recommendation X.520 - Information Technology - Open Systems Interconnection - The Directory: Selected attribute types
• ITU-T Recommendation X.521 - Information Technology - Open Systems Interconnection - The Directory: Selected object classes
• ITU-T Recommendation X.525 - Information Technology - Open Systems Interconnection - The Directory: Replication
• ITU-T Recommendation X.530 - Information Technology - Open Systems Interconnection - The Directory: Use of systems management for administration of the Directory
• ITU-T Recommendation X.660 - Information Technology - Open Systems Interconnection - Procedures for the operation of OSI Registration Authorities: General procedures
• ITU-T Recommendation X.660 Amd. 1 - Incorporation of object identifiers components
• ITU-T Recommendation X.660 Amd. 2 - Incorporation of the root arcs of the object identifier tree
• ITU-T Recommendation X.662 - Information Technology - Open Systems Interconnection - Procedures for the operation of OSI Registration Authorities: Registration of values to RH-name-tree components for joint ISO and ITU-T use
• ITU-T Recommendation X.665 - Information Technology - Open Systems Interconnection - Procedures for the operation of OSI Registration Authorities: Application processes and application entities
• ITU-T Recommendation X.666 - Information Technology - Open Systems Interconnection - Procedures for the operation of OSI Registration Authorities: Assignment of international names for use in specific context
• ITU-T Recommendation X.669 - Information Technology - Open Systems Interconnection - Procedures for the operation of OSI Registration Authorities: Registration procedures for the ITU-T subordinate arcs
• ITU-T Recommendation X.670 - Information Technology - Open Systems Interconnection - Procedures for registration agents operating on behalf of organizations to register organization names subordinate to country names
• ITU-T Recommendation X.671 - Information Technology - Open Systems Interconnection - Procedures for a registration authority operating on behalf of countries to register organization name subordinate to country names
• ITU-T Recommendation X.680 (ISO/IEC 8824-1) - Information Technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation
• ITU-T Recommendation X.681 (ISO/IEC 8824-2) - Information Technology - Abstract Syntax Notation One (ASN.1): Information object specification
• ITU-T Recommendation X.682 (ISO/IEC 8824-3) - Information Technology - Abstract Syntax Notation One (ASN.1): Constraint specification
• ITU-T Recommendation X.683 (ISO/IEC 8824-4) - Information Technology - Abstract Syntax Notation One (ASN.1): Parameterization of ASN.1 specifications
• ITU-T Recommendation X.690 - Information Technology - ASN.1 encoding rules: Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER)
• ITU-T Recommendation X.691 (ISO/IEC 8825-2) - Information Technology - ASN.1 encoding rules: Specification of Packed Encoding Rules (PER)
• ITU-T Recommendation X.692 - Information Technology - ASN.1 encoding rules: Specification of Encoding Control Notation (ECN)
• ITU-T Recommendation X.693 (ISO/IEC 8825-4) - Information Technology - ASN.1 encoding rules: XML encoding rules
• ITU-T Recommendation X.694 (ISO/IEC 8825-5) - Information Technology - ASN.1 encoding rules: Mapping W3C XML schema definitions into ASN.1
• ITU-T Recommendation X.805 - Security architecture for systems providing end-to-end communications
• ITU-T Recommendation X.841 - Information Technology - Security techniques - Security Information Objects for access control
• ITU-T Recommendation X.842 - Information Technology - Security techniques - Guidelines for the use of Trusted Third Party services
• ITU-T Recommendation X.843 - Information Technology - Security techniques - Specification of TTP services to support the application of digital signatures

E-Business specific

• Business Transaction Processing (BTP)
• Controlled Trade (CTML)
• ebXML Collaborative Partner (CPPA)
• ebXML Implementation, Interoperability, Conformance (IIC)
• ebXML Messaging
• ebXML Registry
• Universal Business Language (UBL)

Security

• Access Control (XACML)
• Common Biometric Format (XCBF)
• Rights Language
• Security Services (SAML)
• Web Services Security (WSS)