Dev tools · alternatives · 2026

24 alternatives to Then

Elegant Async Code in Swift

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Then launched in 2016; newer entries below may have overtaken it.

1
Async UI: A Rust UI Library Where Everything is a Future▲173
2022 · wishawa.github.io · its alternatives →
2
AsyncNinja▲5
Concurrency library for Swift
2016 · async.ninja · its alternatives →
3
Waitasecond▲60
Elegant JavaScript or TypeScript promises
2023 · github.com · its alternatives →
4
Swift Guides▲82
The Best Way to Learn Swift Development
2014 · its alternatives →
5
LearnSwift.tips▲138
Swift Tutorials, Code Samples, References and more!
2014 · learnprogramming.tips · its alternatives →
6
Swift Language▲69
Swift Developers Community
2014 · swiftlang.eu · its alternatives →
7
Phoenix▲83
Free and open version of Apple's Swift programming language
2014 · web.archive.org · its alternatives →
8
Render▲169
React-inspired Swift library for writing UIKit UIs
2016 · github.com · its alternatives →
9
Swift AI▲243
A.I. and machine learning library written in Swift
2016 · github.com · its alternatives →
10
AsyncDisplayKit 2.0▲27
Modernizing iOS Development
2016 · github.com · its alternatives →
11
RunSwift▲134
Try Swift in Your Browser
2014 · its alternatives →
12
The REST & JSON in Swift Bundle▲57
Learn to build REST apps in Swift
2016 · leanpub.com · its alternatives →
13
Async – Claude code and Linear and GitHub PRs in one opinionated tool▲107
Hi, I’m Mikkel and I’m building Async, an open-sourced developer tool that combines AI coding with task management and code review. What Async does: - Automatically researches coding tasks, asks clarifying questions, then executes code changes in the cloud - Breaks work into reviewable subtasks with stack diffs for easier code review - Handles the full workflow from issue to merged PR without leaving the app Demo here: https://youtu.be/98k42b8GF4s?si=Azf3FIWAbpsXxk3_ I’ve been working as a developer for over a decade now. I’ve tried all sorts of AI tools out there including…
2025 · github.com · its alternatives →
14
Async Transducers with Promises▲5
2014 · github.com · its alternatives →
15
Swift Devs▲101
A community for developers and students of Swift
2014 · its alternatives →
16
Pure C Asynchronous HTTP Framework▲80
Asynchronous C networking library with HTTP server, WebSockets, reverse proxy, HTTP/2 gRPC client, TLS and event loop. - Softmotions/iwnet
2022 · github.com · its alternatives →
17
Advanced Swift▲97
From low-level programming to high-level abstractions
2015 · objc.io · its alternatives →
18
Learn Swift▲158
Screencasts & code examples to learn Apple’s new Swift
2014 · learnswift.com · its alternatives →
19
Kneden – Transpile ES7 Async/await to ES6 Promise Chains (Babel Plugin)▲76
Transpile ES2017 async/await to vanilla ES6 Promise chains: a Babel plugin - babel/kneden
2016 · github.com · its alternatives →
20
Swiftify Offline Converter▲88
Convert your Objective-C projects to Swift fully offline
2018 · objectivec2swift.com · its alternatives →
21
And then...▲14
A minimal CommonJS promises library with useful things like parallel execution, fulfilments and exception handling, while retaining the beautiful simplicity of .then(). - askabt/andthen
2013 · github.com · its alternatives →
22
Timekit▲97
A comprehensive scheduling API (pre-launch)
2014 · timekit.io · its alternatives →
23
Teaching App Development with Swift▲96
A Github-hosted curriculum on Swift for teachers by Apple
2015 · swifteducation.github.io · its alternatives →
24
AsyncGo▲60
Make decisions/build alignment w/o chat or zoom distractions
2021 · its alternatives →

Also compare

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →