Amazon SNS Alternatives

Pushover is an instant push notification service that enables real-time notifications on Android, iPhone, iPad, and Desktop (Android Wear and Apple Watch too). Its cloud-based solution allows businesses to receive multiple push notifications from websites, devices, and applications.

Twilio is a cloud communications API that allows developers to easily integrate SMS, Voice/Telephony capabilities into their software using their existing web languages and skills. With Twilio, companies can make global phone calls and send and receive text messages, strengthening customer relationships.

Pushbullet effortlessly keeps your devices connected and synchronized for free, enabling you to receive smart notifications and easily push notes, links, files, and more from the web to your Android or iOS devices.