| Subject | English | Thesaurus |
| IT, abbr. | Abstract Windows Toolkit-Application Programmer Interface | AWTAPI (AWT, API, Java) |
| IT, abbr. | Business Application Programmer's Interface | BAPI (SAP, R/3, API) |
| IT, abbr. | Family Application Programmer Interface | FAPI (DOS, VDM, API) |
| IT, abbr. | Internet Server Application Programmer's Interface | ISAPI (MS, C/S, WWW, API) |
| IT, abbr. | Netscape Server Application Programmer's Interface | NSAPI (Netscape, WWW, C/S, API) |
| IT, abbr. | Telephony Server Application Programmer Interface | TSAPI (AT&T, Novell, API) |