Kotlin HacktoberFest

Open-source Kotlin projects categorized as HacktoberFest
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Top 23 Kotlin HacktoberFest Projects

HacktoberFest

  1. MaterialDrawer

    The flexible, easy to use, all in one drawer library for your Android project. Now brand new with material 2 design.

  2. CodeRabbit

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  3. awesome-kotlin

    A curated list of awesome Kotlin related stuff Inspired by awesome-java.

  4. AppIntro

    Make a cool intro for your Android app.

  5. chains

    provides metadata for chains

    Project mention: The Wobbly Table Theorem | news.ycombinator.com | 2024-10-07

    https://github.com/ethereum-lists/chains/pull/4835#issue-224...

  6. detekt

    Static code analysis for Kotlin

    Project mention: pg-index-health – a static analysis tool for you PostgreSQL database | dev.to | 2025-01-06

    Static analysis for Java and Kotlin code is now common practice. For Kotlin services, the tool of choice is typically detekt. For Java applications, the range of available tools (often referred to as linters) is broader. The main tools include Checkstyle, PMD, SpotBugs, and Error Prone. You can read more about them in my previous article.

  7. Kategory

    Ξ›rrow - The perfect companion for your Kotlin journey - Inspired by functional, data-oriented and concurrent programming (by arrow-kt)

    Project mention: Arrow Project for Arrow on GitHub | news.ycombinator.com | 2024-04-25

  8. mockk

    mocking library for Kotlin

  9. SaaSHub

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  10. tachiyomiJ2K

    Free and open source manga reader for Android

  11. client

    F-Droid client with Material UI. (by Droid-ify)

    Project mention: F-Droid Awarded Open Technology Fund's FOSS Sustainability Grant | news.ycombinator.com | 2025-02-05

    Also Droidify, which I believe is either a fork or Neo Store or Neo Store is a fork of Droidify. Whichever is the original is a fork of Foxy Droid.

    https://github.com/Droid-ify/client

  12. intellij-rust

    Rust plugin for the IntelliJ Platform

  13. Kotest

    Powerful, elegant and flexible test framework for Kotlin with assertions, property testing and data driven tests.

  14. RetroMusicPlayer

    Best Material You Design music player for Android

  15. chucker

    πŸ”Ž An HTTP inspector for Android & OkHTTP (like Charles but on device)

  16. Android

    DuckDuckGo Android App (by duckduckgo)

  17. FastAdapter

    The bullet proof, fast and easy to use adapter library, which minimizes developing time to a fraction...

  18. Jetpack-Compose-Playground

    Community-driven collection of Jetpack Compose example code and tutorials :rocket: https://foso.github.io/compose

  19. element-android

    A Matrix collaboration client for Android.

  20. Neo-Store

    An F-Droid client with modern UI and an arsenal of extra features.

    Project mention: Degoogled Android – My Experience | news.ycombinator.com | 2024-05-23

    Microg.org is correct. The official f-droid client won't care about the signatures, but this is a known issue with 3rd party stores like NeoStore.

    https://github.com/NeoApplications/Neo-Store/issues/564

  21. compose-destinations

    Annotation processing library for type-safe Jetpack Compose navigation with no boilerplate.

  22. TachiyomiSY

    Free and open source manga reader for Android

  23. Lemuroid

    All in one emulator on Android!

  24. Neo-Backup

    backup manager for android

  25. awesome-android-kotlin-apps

    πŸ‘“ A curated list of awesome android kotlin apps by open-source contributors.

  26. SaaSHub

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NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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Index

What are some of the best open-source HacktoberFest projects in Kotlin? This list will help you:

# Project Stars
1 MaterialDrawer 11,667
2 awesome-kotlin 11,116
3 AppIntro 10,536
4 chains 9,456
5 detekt 6,430
6 Kategory 6,283
7 mockk 5,512
8 tachiyomiJ2K 4,899
9 client 4,597
10 intellij-rust 4,539
11 Kotest 4,528
12 RetroMusicPlayer 4,257
13 chucker 4,102
14 Android 4,002
15 FastAdapter 3,850
16 Jetpack-Compose-Playground 3,508
17 element-android 3,449
18 Neo-Store 3,389
19 compose-destinations 3,277
20 TachiyomiSY 3,150
21 Lemuroid 2,927
22 Neo-Backup 2,828
23 awesome-android-kotlin-apps 2,591

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