XI
XI is used in tech circles for data‑import and integration tools such as XML Import or SAP’s eXchange Infrastructure, and it also appears in academic or governmental settings like the Xavier Institute or X‑ray instrumentation.
Miscellaneous
Governmental
Academic & Science
Computing
Fastracker Instrument file
X Identification (frame)
XML Import
Xtreme Integrity
eXternal Interface
Xpert Intelligence
eXchange Infrastructure (SAP)