7 tools21 comparisons
Best Notifications & SMS Tools(2026)
Send multi-channel notifications to your users. We compared 7tools so you don't have to.
Knock
From $0 (10,000 notifications/month free)
Notification infrastructure for developers
Multi-channel (email, SMS, push, in-app)Notification templatesWorkflow builder
Twilio
From $0.0079/SMS
Communications APIs for SMS, voice, email
SMS APIVoice callsWhatsApp API
Novu
From $250/month (cloud)
Open source notification infrastructure
Multi-channel notificationsIn-app notification centerWorkflow builder
Knock
From $100/month
Notification infrastructure that scales
Multi-channel workflowsIn-app feedsDigest notifications
OneSignal
From $9/month
The market-leading push notification service
Push notificationsIn-app messagesEmail
Sendbird
From $399/month
Chat and messaging API for apps
In-app chat APIPush notificationsVideo & voice calls
Courier
From $249/month
One notification API for every channel
Multi-channel APIVisual template designerRouting rules
Head-to-head
Notifications & SMS Comparisons
Knock vs TwilioKnock vs NovuKnock vs KnockKnock vs OneSignalKnock vs SendbirdKnock vs CourierTwilio vs NovuTwilio vs KnockTwilio vs OneSignalTwilio vs SendbirdTwilio vs CourierNovu vs KnockNovu vs OneSignalNovu vs SendbirdNovu vs CourierKnock vs OneSignalKnock vs SendbirdKnock vs CourierOneSignal vs SendbirdOneSignal vs CourierSendbird vs Courier