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Webhook Relay vs smee.io: catalog facts
Webhook Relay	smee.io
Freemium Free plan with 150 webhooks a month; paid plans for higher volume.	Free Free to use.
Web, Command line	Web, Command line
Delivers webhooks to localhost and private networks Durable retries during outages	No need to open ports or run a tunnel Built-in support in Probot GitHub Apps
Hosted service that requires an account Free plan limited to 150 webhooks a month	Needs the smee client running locally to forward events Intended for development, not production traffic
Downloadable app, Hosted service	Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Needs internet	Needs internet
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.