Best Proactive Notification Software for Linux of 2025

OneSignal is the market leader for customer engagement. It powers mobile push and web push and in-app messages to more than 1 million developers and marketing teams. OneSignal is easy to set up and allows you to send push notifications to all your users. You can access powerful features such as segmentation, automated messaging and intelligent delivery. OneSignal is designed for developers and allows you to code in any language with any development environment. It takes less than 10 lines of code. It is also the most flexible push provider with integrations to top analytics providers and DMPs as well as Zapier to connect to 1400+ platforms and apps. OneSignal allows you to send unlimited messages to mobile subscribers and up 10K web push subscribers. 76% of top million sites that use push notifications use OneSignal (source: Builtwith).

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Amazon Simple Queue Service (SQS) is a fully managed message queuing platform designed to help you decouple and scale microservices, distributed systems, and serverless applications. By removing the complexity and overhead typically associated with message-oriented middleware, SQS allows developers to concentrate on more impactful tasks. With SQS, you can effortlessly send, store, and receive messages between various software components at any scale, ensuring message integrity and independence from other services. You can quickly begin using SQS in just minutes through the AWS console, Command Line Interface, or your preferred SDK, executing three straightforward commands. This service enables the transmission of any data volume at any throughput level while maintaining message reliability and service independence. Additionally, SQS facilitates the decoupling of application components, which allows them to operate and fail independently, ultimately enhancing the fault tolerance of the overall system. By leveraging SQS, organizations can achieve greater resilience and adaptability in their application architecture.