Observed Signal · May 16, 2026 · Product Launch · Source: DEV Community · Impact: 2/5 · Sentiment: Positive
FlushKit: Real-time Flutter Notifications Without Firebase
A developer-built SDK called FlushKit provides real-time, remote in-app notifications for Flutter apps without requiring the full Firebase stack. The SDK uses Server-Sent Events (SSE) to push one-way events over a persistent HTTP connection; the client reconnects automatically and can replay missed messages using a ?since= query parameter. The backend is implemented in Go/Gin with an SSE broadcast layer that fans out notifications to active app instances. FlushKit builds on the another_flushbar package for UI and supports reconnection, offline replay, action buttons, icons and a persistent mode. The product is live at flushkit.dev with a free tier and is currently an early-stage solo-founder project by Hamid Wakili.
Niche developer-focused product that offers an alternative to Firebase for in-app notifications; useful for mobile app engagement but not a platform-level industry change.
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Key Takeaways & Evidence Grounding
- FlushKit is a remote in-app notification SDK for Flutter that uses Server-Sent Events (SSE).
- The client implements automatic reconnection and offline replay via a ?since= query parameter.
- Backend implemented in Go with the Gin framework using an SSE broadcast per app.
- FlushKit is built on the another_flushbar Flutter package and supports action buttons, icons and persistent mode.
- FlushKit is live at flushkit.dev with a free tier; the project is led by solo founder Hamid Wakili.
Connected Companies & Entities
3 Entities mappedOntology Mapping & Concepts
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