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gomplate vs envsubst: catalog facts
gomplate	envsubst
Free Free and open source under the MIT licence.	Free Free and open source under the MIT licence.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Supports many data sources as template input Hundreds of built-in template functions	Single binary with no runtime to install Fills config templates from environment variables
Requires learning Go template syntax	Small, narrowly focused tool Infrequent releases
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
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.