'''VDX''' may refer to:
* VDX (library software) (for Virtual Document eXchange), an interlibrary loan software product * .vdx, a filename extension for the Microsoft Visio XML drawing file format * OSEK or OSEK/VDX (Vehicle Distributed eXecutive), a standards body for automotive electronics * Virtual Desktop Extender, by RES Software, acquired by Ivanti in 2017
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