Courier Alternatives

Power your product notifications with Segment and Hightouch.

The ultimate library for managing multi-channel transactional notifications with a single API.

Open Source

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

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). )

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

Open Source freemium $99.0 / Monthly

A list of fonts and supported products

Raven is a central platform to orchestrate & track your product's transactional messages across multiple channels like Email, SMS, Push, WhatsApp & more.

A font derived from Fira Mono with added ligatures.

OSX, Productivity, Design, Typography, powerline, and Fonts

Open Source

Fully managed pub/sub messaging for microservices, distributed systems, and serverless applications

This open source font family is derived from the Bitstream Vera family, itself close to the Microsoft core Web fonts (see Andale Mono).

Use the SF Mono font in Atom by importing it from Terminal.app

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

Open Source

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