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Windmill vs Appsmith: catalog facts
Windmill	Appsmith
Freemium Open-source self-hosted version is free; a hosted cloud and an enterprise edition are…	Freemium The open-source edition is free to self-host; a cloud service and sales-led offerings are…
Web, Self-hosted	Web, Self-hosted
Scripts become APIs, jobs and forms without boilerplate Supports TypeScript, Python, Go, Bash and 20+ other languages	Connects to many databases and any API Drag-and-drop UI with full JavaScript customisation
Aimed at teams comfortable writing code Some features are tied to the enterprise edition	Aimed at internal tools rather than public-facing apps Some features are promoted through demos and sales
Self-hosted, Hosted service	Self-hosted, Hosted service
Open source	Open source
License not stated	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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