Courier App Alternatives

Send push notifications programmatically at scale

Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.

Open Source freemium $9.0 / Monthly (Plus usage-based costs. (Growth Plan). )

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

Try for free Open Source freemium

Learn when your site is mentioned by other sites for free

A simple tool for previewing push notification copy

Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.

Open Source

Power your product notifications with Segment and Hightouch.

Engage your mobile and desktop web users with intelligent web push notifications.

Your app needs a notification inbox – with real-time sync, web & mobile push, and a UI that matches your brand.

Push Notifications for Websites

Bearer is an open source, fast and accurate static application security testing (SAST) tool that analyze your source code to discover, filter and prioritize security and privacy risks.

Open Source freemium

Re-engage website visitors with push notifications

Unleash limitless possibilities with Truepush and save up to $600 monthly. Free up to 10K Subscribers on all features.

Open Source free

Single Notification API for Every Channel (SMS, Slack, Whatsapp, Email, SMS, Push, App Inbox)

Open Source freemium $99.0 / Monthly