Life & fun · alternatives · 2026

24 alternatives to Kotlin 1.0

Pragmatic programming language for JVM and Android

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Kotlin 1.0 launched in 2016; newer entries below may have overtaken it.

1. 1
   Software Engineering Daily: Kotlin with Hadi Hariri▲56

   The world through the lens of software.

   2017 · softwareengineeringdaily.com · its alternatives →

2. 2
   I finished v5 of a JVM framework I've spent spent half a decade making▲377

   ForewordJavalin is a Java and Kotlin web framework which focuses on simplicity and Java/Kotlin interoperability.It supports WebSockets and HTTP3, and it uses...

   2022 · javalin.io · its alternatives →

3. 3
   Kotlin▲3

   Statically typed programming language targeting the Java /JS

   2015 · kotlinlang.org · its alternatives →

4. 4KA
   Kweb, a Kotlin web framework based on the observer pattern▲5

   2019 · docs.kweb.io · its alternatives →

5. 5
   Javalin 1.0 – A Kotlin/Java web framework▲271

   2017 · javalin.io · its alternatives →

6. 6
   Kotlin for Android Developers▲63

   Learn Kotlin the easy way while developing an Android App

   2016 · antonioleiva.com · its alternatives →

7. 7
   The Changelog - #189: JSON API with Yehuda Katz▲66

   Yehuda's start as a programmer and the spec for building API

   2016 · changelog.com · its alternatives →

8. 8
   My first open-source project release – RandomJson▲56

   Provides a Kotlin/Java library to create a random json string - mangatmodi/RandomJson

   2019 · github.com · its alternatives →

9. 9
   Maybe Haskell▲60

   See what it’s like to program in a language without null.

   2015 · books.thoughtbot.com · its alternatives →

10. 10
    Eloquent Javascript▲20

    A modern introduction to Javascript

    2014 · eloquentjavascript.net · its alternatives →

11. 11
    Kotlin or Java▲3

    Kotlin or Java: Which Do Android Developers Prefer?

    2019 · cmarix.com · its alternatives →

12. 12
    RAML▲62

    A Standard for API modeling, documentation and exploration

    2014 · raml.org · its alternatives →

13. 13LA
    Language Agnostic IDL for Rust, Swift and Kotlin▲7

    Arun Sharma Open Source Activity

    2020 · adsharma.github.io · its alternatives →

14. 14
    Http4k: Server as a Function. In Kotlin. Typesafe. Without the Server▲29

    An overview of the Kotlin

    2017 · http4k.org · its alternatives →

15. 15KT
    KillerTask: the solution to AsyncTask implementation (in Kotlin)▲5

    2016 · inaka.net · its alternatives →

16. 16
    Mosaic – A Kotlin framework for cleaner back end code▲25

    Backend APIs often grow into large orchestration classes full of duplicated calls and manual concurrency. I’ve been working on Mosaic, a Kotlin framework that composes responses out of small, request-scoped “tiles.” Each tile runs once per request, dependencies resolve automatically, and independent tiles execute in parallel without boilerplate. It’s still early (v0.2.0), but working today for caching, concurrency, and testability. Curious to hear feedback on the approach. GitHub: https://github.com/Nick-Abbott/Mosaic Maven Central: org.buildmosaic:mosaic-core:0.2.0

    2025 · github.com · its alternatives →

17. 17
    Sketchflow: Mobile Native Code▲22

    Text to Native iOS & Android apps. Real Swift & Kotlin code.

    Feb 2026 · sketchflow.ai · its alternatives →

18. 18
    Kotlin on Android

    Now officially supported by Google

    2017 · developer.android.com · its alternatives →

19. 19
    JsonTree, a tool for turning JSON data into a collapsible html tree▲9

    A lightweight vanilla Javascript micro-library for making collapsible trees with JSON - MaxLeiter/jsonTree

    2016 · github.com · its alternatives →

20. 20
    Swiftlin▲7

    Convert Swift code to Kotlin with 1 click

    2023 · its alternatives →

21. 21
    Kotlin∇: Shape-Safe Symbolic Differentiation with Algebraic Data Types▲15

    🧩 Shape-Safe Symbolic Differentiation with Algebraic Data Types - breandan/kotlingrad

    2021 · github.com · its alternatives →

22. 22
    Kotlin for Android Developers▲4

    Learn Kotlin the easy way while developing an Android App.

    2016 · antonioleiva.com · its alternatives →

23. 23
    The Julia Language▲10

    A high-level, high-performance dynamic programming language

    2017 · julialang.org · its alternatives →

24. 24
    Experimental Support for Kotlin in Pulumi▲5

    Hello everyone :) Recently, my team (at VirtusLab) released an experimental support for Kotlin in Pulumi. This means you can use a convenient DSL to deploy stuff to your cloud (see examples in the repository). Getting started guide should be enough for you to use this in a toy project :). This is a proof of concept, so we would really love to hear your feedback before moving on. Please have a look at the "Giving feedback" section of the README.md.

    2023 · github.com · its alternatives →

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 →