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Apprise API vs Novu: catalog facts
Apprise API	Novu
Free Free and open source with no paid tier.	Freemium Open-source code can be self-hosted; a hosted cloud service is also offered.
Linux, Self-hosted	Web, Self-hosted, Command line
Language-agnostic notifications over a REST API Runs as a Docker container	One API for many notification channels Workflow editor with per-channel templates
You host and maintain the server yourself Needs another tool or script to send it messages	Aimed at developers building products, not end users Repository includes an enterprise folder, so some features may sit outside the open code
Self-hosted	Self-hosted, Hosted service
Open source	Open source
License: MIT	License not stated
No account 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 September 23, 2026

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