One webhook in. Every channel out.

Point anything that emits a webhook at Alphorn and it fans the message out to Slack, Discord, Telegram, Email, PagerDuty, SMS, and 15+ other destinations — with filters, retries, real-time streams, and delivery history along the way.

Sign up and start routing in under a minute. No infra, no upgrades, no 3 AM Postgres tuning. Free tier, no card.

git clone https://github.com/alphorn-dev/alphorn.git
cd alphorn && cp .env.example .env
docker compose up -d

Open http://localhost:3000. That's it. Full walkthrough in the self-hosting guide.

• 20+ channels — Slack, Discord, Teams, Telegram, Mattermost, Rocket.Chat, Google Chat, Zulip, Matrix, ntfy, Gotify, Pushover, PagerDuty, Opsgenie, Twilio & Vonage SMS, SMTP, SendGrid, Mailgun, generic webhooks, SSE.
• Filter DSL — route by priority, tags, title, body, or any JSON field in the payload.
• Reliable delivery — queued, retried, replayable. Nothing gets quietly dropped.
• Real-time streams — live SSE feed of every event flowing through your org.
• Multi-tenant — orgs, roles, invitations, 2FA, audit log.

• alphorn.dev — what & why
• docs.alphorn.dev — guides, channel reference, API
• app.alphorn.dev — the hosted app

Open source under AGPL-3.0. Commercial license on request — hello@alphorn.dev.