Calypso
CuratedA JavaScript and REST API-based interface for reading, managing, and publishing to WordPress.com and Jetpack-connected sites.
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#1 Tool of the Day· Sep 5, 2026#3 Tool of the Day· Sep 10, 2026
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[](https://ossdrop.com/tool/calypso)Frequently asked
What is Calypso?
Calypso is an open-source creator / media tool — A JavaScript and REST API-based interface for reading, managing, and publishing to WordPress.com and Jetpack-connected sites. It is written in TypeScript.
Is Calypso free and open source?
Yes. Calypso is free and open source, released under the GPL-2.0 license. You can view and contribute to the source at https://github.com/Automattic/wp-calypso.
What language is Calypso written in?
Calypso is primarily written in TypeScript.
What are open-source alternatives to Calypso?
Other open-source creator / media tools on OSSDrop include yt-dlp, Stable Diffusion web UI, ComfyUI, Whisper.
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