Compare software

Outpost vs Hook0: catalog facts
Outpost	Hook0
Free Free and open source to self-host.	Freemium Free hosted plan with no credit card required, plus paid plans.
Self-hosted	Web, Self-hosted
Self-hostable alternative to building webhook delivery yourself Kubernetes Helm chart and example configs included	Handles retries and HMAC signing of outgoing webhooks Hosted in the EU with a free plan
Aimed at developers running a service, not individual users Requires operating your own infrastructure	SSPL licence is source-available, not open source Aimed at developers adding webhooks to their own product
Self-hosted	Self-hosted, Hosted service
Open source	Closed source
License not stated	License: SSPL-1.0
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 24, 2026	Official website Full listing and sources Checked September 23, 2026

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