AsyncNinja

A Swift library providing primitives for concurrency and reactive programming, simplifying asynchronous code.

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Quick facts
What is it A Swift library providing primitives for concurrency and reactive programming, simplifying asynchronous code.
Pricing Unknown
Platform API
API Yes
Best for Handling asynchronous network calls in Swift apps, Creating reactive UI bindings for macOS/iOS

Data updated Aug. 1, 2026

What does AsyncNinja do?

AsyncNinja is a Swift library that gives developers a complete set of tools for handling asynchronous operations and reactive programming. It provides core primitives like Futures, Promises, Channels, Producers, and Sinks, which you can use to manage complex data flows, network requests, and user interface updates without getting bogged down in callback hell. It works across all Apple platforms and Linux, making it a versatile choice for cross-platform Swift development.

The library stands out by integrating directly with existing Apple frameworks, reducing the amount of boilerplate code you need to write. It offers extensions for Key-Value Observing, URLSession, UI controls, and CoreData. A key feature is its context-based execution, which automatically handles memory management by unbinding observers and dispatching to the correct queue, eliminating the need for constant `[weak self]` and `DispatchQueue.main.async` calls.

AsyncNinja is most beneficial for iOS, macOS, and cross-platform Swift developers who are building complex applications with numerous asynchronous tasks. It's ideal for managing real-time data streams, such as updating a search results list as a user types, or handling multiple concurrent network requests while keeping the UI responsive. It turns complicated callback-based code into a more readable and maintainable chain of operations.

#ios development#library#open source#reactive programming#swift

Key features

What makes it stand out
01
Provides Futures, Promises, and Channels for managing async operations
02
Automatic memory management and queue dispatching eliminates boilerplate code
03
Extends Apple frameworks like URLSession and UI controls for easy integration
04
Supports transformations like map, filter, debounce, and flatMap on data streams
05
Works across iOS, macOS, tvOS, watchOS, and Linux platforms

Who is AsyncNinja for?

Who benefits most from this tool
Handling asynchronous network calls in Swift apps
Creating reactive UI bindings for macOS/iOS
Simplifying concurrency patterns in server-side Swift projects

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