Can you name popular libraries used for reactive programming?

Popular libraries for reactive programming in iOS:

• RxSwift — one of the most well-known libraries implementing the reactive programming pattern using Observable, Observer, and operators.
• Combine — a framework from Apple, integrated into iOS starting from version 13, providing tools for working with asynchronous events and data streams.
• ReactiveSwift — a library from the ReactiveCocoa team, similar to RxSwift but with some differences in API.

All these libraries help simplify working with asynchrony and events, making the code more declarative and easier to maintain.