X/Open Standards
The Open Group maintain the X/Open standards. In particular, Nexor make use of:
| XOM | OSI-Abstract-Data Manipulation API (XOM) |
| XMT | API to Electronic Mail (X.400) Issue 3 |
| XMS | Message Store API |
| XDS | API to Directory Services (XDS) Issue 3 |
| AZN | Authorization API |
| GSS | Generic Security Service API Base |
| GCS | Generic Cryptographic Service Base |
