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Oxygen XML Developer vs Xmplify: catalog facts
Oxygen XML Developer	Xmplify
Paid Commercial licence, with a free trial available.	Paid Costs $79.
macOS	macOS
XSLT and XQuery debuggers Visual XSD and JSON Schema diagrams	Auto-completion driven by DTD or XML Schema Continuous validation while editing
Paid licence after the trial Large feature set takes time to learn	macOS only Paid licence
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.