OpenVibe.Events: durable events, subscriptions, signed delivery, dead letters and replay.

POST /api/v1/events              publish (service token, events.event.publish; app token, events.app.publish)
GET  /api/v1/events              pull with a cursor (events.event.read; app token, events.app.read)
     /api/v1/subscriptions       webhook subscriptions (events.subscription.manage; app token, events.app.subscribe)
     /api/v1/deliveries          DLQ inspect and replay (events.delivery.admin)
GET  /realtime/stream?topics=... server-sent events for browsers
GET  /api/health, /api/ready, /release.json

Source: https://github.com/OpenVibers/OpenVibe.Events