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gomplate vs ytt: catalog facts
gomplate	ytt
Free Free and open source under the MIT licence.	Free Free and open source under the Apache 2.0 licence.
Windows, macOS, Linux, Command line	Windows, Command line
Supports many data sources as template input Hundreds of built-in template functions	Structure-aware templating avoids text escaping issues Overlays patch third-party YAML without forking it
Requires learning Go template syntax	Its own templating language takes time to learn Focused on YAML only
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: Apache-2.0
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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