Softlink 1806134
c't 6/2018, p.134
Push-web
wortwart/push-notifications: demoproject op GitHub
Web Push Payload Encryption: achtergronden over endpoint-security
Message Encryption for Web Push: RFC 8291
Sending VAPID identified WebPush Notifications via Mozilla’s Push Service: achtergronden over VAPID
Sending Messages with Web Push Libraries: artikel bij google developers
Firebase Cloud Messaging: messagingdienst
Onesignal: push-messagingdienst
Roost: pushdienst
web-push-libs voor PHP