Alternatives

Products that do what Apple Pkl does

Configuration that is programmable, scalable & safe

1. 1DA
   DevUtils.app – Developer Utilities for macOS▲241

   This is a project I've been working on since the start of Covid-19. I built an app so that I don't have to put data into online tools like JWT debugger, JSON formatter, URL decoder, etc... https://devutils.app The app works entirely offline and is open-source. I'm selling the pre-built version of the app to earn some revenue for my time. If you want to try the app but can't afford the price or don't have XCode to build the app, drop me an email (my profile), I'll be happy to provide you a free build. I would love to hear all the feedback/suggestions. Thanks!

   2020

2. 2
   The Swift Summary Book▲157

   Summary of Apple's Swift language written on Playgrounds

   2016

3. 3
   JusTTY▲85

   A simple native macOS terminal built on Swift and libghostty

   Jul 2026 · github.com

4. 4LA
   Language Agnostic IDL for Rust, Swift and Kotlin▲7

   2020 · adsharma.github.io

5. 5
   Lightwell▲262

   A simple tool for creating native iOS apps on Mac 💻 📲

   2018

6. 6
   Dependencies for macOS▲82

   Explore the architecture of apps with an interactive graph

   2021

7. 7IO
   Iosevka Open Source Programming Typeface▲67

   2015 · be5invis.github.io

8. 8
   DAML▲74

   Open source language: build smart contracts on any platform

   2019

9. 9FA
   FunctionKit – Approachable functional concepts brought to Swift▲51

   2018 · github.com

10. 10
    MacGap▲166

    Build native OS X apps with web technologies

    2014

11. 11P2
    Phoenix 2.6 – a macOS window and app manager scriptable with JavaScript▲183

    2018 · github.com

12. 12
    Nativeline AI + Cloud▲111

    Native Swift apps + a real cloud database. One prompt away.

    Mar 2026

13. 13
    MarkupKit▲99

    A framework for creating native iOS applications

    2016

14. 14
    Nativeline▲89

    Build native Swift iPhone, iPad, and Mac apps with AI

    Feb 2026

15. 15LI
    Lisp implementation in modern Java, Go, C#, TypeScript, Python▲128

    2021 · github.com

16. 16CJ
    Cupertino.js – A JavaScript to Cocoa compiler and runtime▲77

    2014 · github.com

17. 17AM
    Auxl – Modular API Client for macOS▲78

    2021 · auxl.io

18. 18
    Teaching App Development with Swift▲96

    A Github-hosted curriculum on Swift for teachers by Apple

    2015

19. 19
    Macaw▲90

    A simple code editor for Swift

    2017

20. 20TK
    The KCL Programming Language for DevOps▲5

    2023 · github.com

21. 21TA
    Terminal, a sandboxed command-line interface for iOS▲62

    2018 · github.com

22. 22AA
    Apfel - Apple Intelligence from the Command Line▲5

    Mar 2026 · github.com

23. 23CA
    Creating a Programming Language in Swift▲7

    2019 · medium.com

24. 24BM
    Build MacOS apps with Golang▲12

    2017 · github.com

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