This guide explains COM, ActiveX, and OCX and their interconnections, highlighting their practical applications.
A practical guide to what COM is, what ActiveX is, and what OCX is - covering their differences and relationships, the connection to OLE, where they are used, and how to think about them today. Archived version of https://comcomponent.com/en/blog/2026/03/13/000-what-is-com-activex-ocx/, as published on 2026-07-27. The live article is maintained and may change after this date. First published 2026-03-13.
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