Kotlin Multiplatform Libraries

• Network
• Repository
• Serializer
• Storage
• DI
• Image
• Audio
• Bluetooth
• Reactive
• Utility
• Debug
• Test
• Annotation Processor
• GUI
• Command Line Interface
• Architecture
• Docs
• Build & Development Tools
• Artificial Intelligence
• Social

Libraries

Network

Http

• Ktor - Framework for quickly creating connected applications in Kotlin with minimal effort
  

• ktor-client-oauth-feature - Ktor Client Feature for handling OAuth token refreshes
  

• kmp-tor - Embed Tor into your application.
  

• Ktorfit - HTTP client / Kotlin Symbol Processor for Kotlin Multiplatform (Js, Jvm, Android, Native, iOS) using KSP and Ktor clients inspired by Retrofit
  

• fuel - The easiest HTTP networking library for Kotlin backed by Kotlinx Coroutines.
  

• rsocket-kotlin - RSocket Kotlin multi-platform implementation based on kotlinx.coroutines and Ktor.
  

• kotliny.network - Simple, powerful and lightweight Kotlin Multiplatform Network Client.
  

GraphQL

• apollo - Multiplatform official GraphQL client.
  

• suparnatural-graphql - Strict type safe GraphQL client with support for composable links.
  

• kgql - GraphQL Document wrapper generator for Kotlin Multiplatform Project and Android

Real-time communication

• webrtc-kmp - WebRTC Kotlin Multiplatform SDK.
  

JSON-RPC

• jsonrpc-kotlin-client -JSON-RPC Kotlin Multiplatform client.
  

Stomp

• krossbow - A Kotlin multiplatform coroutine-based STOMP client over websockets
  

Utility

• Connectivity status - Monitor the internet connection status of your device on Android and iOS.
  

• Highlights - Kotlin Multiplatform syntax highlighting engine.
  

Authentication

• cognito-idp - Lightweight AWS Cognito Identity Provider client for Kotlin Multiplatform projects.
  

Repository

• Store - A Kotlin Multiplatform library for building network-resilient applications.
  

Serializer

• kotlinx.serialization (official) - Kotlin multiplatform / multi-format serialization
  

• YAKL - A YAML 1.2 processor
  

• KoAP - CoAP encoder/decoder with support for UDP (RFC 7252), TCP (RFC 8323) and Observe (RFC 7641).
  

• Pbandk - Kotlin code generator and runtime for Protocol Buffers
  

• Kase64 - Base64 encoder/decoder for Kotlin/Multiplatform. Supports standard and URL-safe encodings.
  

• Kex - Hex string encoder/decoder for Kotlin/Multiplatform.
  

• Ktoml - MPP serialization library (decoder/encoder) for TOML format.
  

• encoding - Rfc 4648 Section 4-8 compliant encoding (Base 16, 32 Crockford, 32 Default, 32 Hex, 64 Default, 64 Url Safe).
  

• parcelize - Implement Android Parcelable from common code.
  

Storage

RDB

• SQLDelight - Generates typesafe Kotlin APIs from SQL.
  

• SQLiter - Minimal multiplatform sqlite library
  

• Door - Room for Kotlin Multiplatform.
  

• AWS - S3 - AWS KMP is an extension to AWS Kotlin Multiplatform for JVM, Android and iOS.
  

NoSQL

• Realm - Kotlin Multiplatform and Android SDK for the Realm Mobile Database: Build Better Apps Faster.
  

• Kotbase - Kotlin Multiplatform library for Couchbase Lite—a lightweight, embedded, syncable, NoSQL database
  

• Kodein-DB - Embedded NoSQL database
  

• Couchbaselite - Kotlin Multiplatform wrapper for the Couchbase Lite Mobile Database.
  

KVS

• multiplatform-settings - A Kotlin Multiplatform library for saving simple key-value data.
  

• KVault - Secure key-value storage for Kotlin Multiplatform projects.
  

• Kissme - Kissme: Kotlin Secure Storage Multiplatform
  

• Multiplatform-Preferences - Kotlin Multi Platform Preferences, for android an ios : SharedPreferences & NSUserDefault.
  

• kds - Multiplatform coroutine-based kotlin library for saving Serializables with kotlinx.serialization and delegates.
  

• Kottage - Kotlin Multiplatform Key-Value Store Local Cache Storage for Single Source of Truth.
  

• Universal-Cache - Kotlin Flow caching and request sharing. Main idea: don't request data more times than it's needed.
  

• KCrypt - Kotlin encryption key generator and encrypted key-value storage.
  

FILE

• okio - A modern I/O library for Android, Java, and Kotlin Multiplatform.
  

• suparnatural-fs - Kotlin Multi Platform File System access library for iOS and Android.
  

• suparnatural-cache - A superfast, thread safe in-memory cache with configurable hashing schemes backed by persistent stores with blocking/non-blocking I/O.
  

• KStore - A tiny Kotlin multiplatform library that assists in saving and restoring objects to and from disk using kotlinx.coroutines, kotlinx.serialisation and okio.
  

File System

• Kfswatch - Kotlin Multiplatform File System Watcher
  

DI

• Kodein-DI - Painless Kotlin Dependency Injection
  

• Koin - A pragmatic lightweight dependency injection framework for Kotlin
  

• PopKorn - Forget about modules and components. DI can be simple.
  

• kotlin-inject - Dependency injection lib for kotlin.
  

• Koject - DI Container library for Kotlin Multiplatform.
  

Image

• korim - Kotlin cORoutines IMaging, Bitmap and Vector graphics for Multiplatform Kotlin
  

• Kraphviz - Graphviz for Kotlin Multiplatform.
  

• Kim - Kotlin Image Metadata - Kotlin Multiplatform library for reading and writing image metadata.
  

• peekaboo - Single & Multiple Image Selection and Maximum Image Count Setting Library for Compose Multiplatform (Android & iOS)

Audio

• korau - Pure Kotlin WAV, MP3 and OGG vorbis decoders
  

Bluetooth

• Blue-Falcon - A Bluetooth kotlin multiplatform "Cross-Platform" library for iOS and Android
  

• Kable - Simple Coroutines-powered API for interacting with Bluetooth Low Energy devices.
  

Reactive

Rx

• Reaktive - Kotlin multi-platform implementation of Reactive Extensions
  

• RxCommon - Multiplatform implementation of ReactiveX providing a common way to build one set of business logic for native, iOS, Javascript, Android, JVM, and other platforms
  

LiveData(Android)

• Multiplatform-LiveData - Multiplatorm implementation of LiveDatas / MVVM in kotlin android & native ios
  

Utility

Asynchronous

• coroutine (official) - Support for Kotlin coroutine.
  

• suparnatural-concurrency - Unified APIs such as Workers, Schedulers for cross-platform multithreading on iOS and Android.
  

• Koru - Coroutine wrappers for Kotlin Native generated from annotations.
  

• KMP-NativeCoroutines - Library to use Kotlin Coroutines from Swift code in KMP apps.
  

• FlowExt - Kotlinx Coroutines Flow Extensions. Extensions to the Kotlin Flow library.
  

Date, Time

• kotlinx-datetime - Official date and time library
  

• klock - Multiplatform Date and time library for Kotlin
  

• island-time - A Kotlin Multiplatform library for working with dates and times
  

• time - Type-safe time calculations in Kotlin, on any platform
  

• time - Type-safe time periods for the Kotlinx-datetime multiplatform date/time library
  

• fluid-time - Kotlin multiplatform date & time library
  

• kcron - Kotlin multiplatform Cron library
  

• Kronos Multiplatform - Network Time Protocol (NTP) library
  

Semantic Versioning

• SemVer-KMP - A Kotlin library for Semantic Versioning with ranges and other features.
  

• kotlin-semver - Semantic Versioning library for Kotlin Multiplatform.
  

EventBus

• Multiplatform-Bus - Kotlin event-bus compatible with Android & native iOS.
  

• Event4k - MultiPlatform Kotlin EventBus library - simple, bidirectional, concurrent.
  

• kotlin-channel-event-bus - A Kotlin Multiplatform library that provides a simple event bus implementation using KotlinX Coroutines Channels. Multi-keys, multi-producers, single-consumer and thread-safe event bus backed by kotlinx.coroutines.channels.Channels.
  

Number

• kotlin-multiplatform-bignum - A Kotlin multiplatform library for arbitrary precision arithmetics
  

Hashing

• kotlinx-murmurhash - Multiplatform library for MurmurHash, a non-cryptographic hash function for general hash-based lookup focused on simplicity and performance.
  ![badge][badge-macos]

Cryptography

• krypt - Cryptography library. Support for SecureRandom, Hash(MD5/SHA1/SHA256), AES.
  

• kotlin-multiplatform-libsodium - A Kotlin Multiplatform wrapper for Libsodium cryptography library.
  

• cryptography-kotlin - Type-safe Multiplatform cryptography library for Kotlin which doesn't implement any cryptography algorithm on its own, but wraps well-known future-proof solutions like OpenSSL 3.x, WebCrypto or JCA.
  

• KotlinCrypto/hash - Hash functions (MD5/SHA1/SHA2/SHA3).
  

• KotlinCrypto/MACs - Message Authentication Code functions (Hmac MD5/SHA1/SHA2/SHA3, KMAC).
  

• KotlinCrypto/sponges - Sponge functions & state (Keccak-p).
  

• KotlinCrypto/secure-random - Cryptographically secure random number generator, SecureRandom.
  

• DatL4g/Sekret - 🔒 Deeply hide secrets with Kotlin Multiplatform (API Keys, Application credentials, etc).
  

String Utils

• FuzzyWuzzy-Kotlin - Fuzzy string matching on collections. Port of python & java library.

• kasechange - Multiplatform Kotlin library to convert strings between various case formats including Camel Case, Snake Case, Pascal Case and Kebab Case.
  

• kotlin-multiplatform-diff - Multiplatform Kotlin library for calculating text differences.
  

• doistx-normalize -- Kotlin Multiplatform library for string unicode normalization (UAX #15).
  

• KeepLink -- Kotlin multiplatform deep-link definition, parsing and creation library.
  

Input/Output

• keyboard-mouse-kt - Multiplatform Kotlin library for interacting with global keyboard and mouse events and states.
  

Analytics

• Kotlin-Multiplatform-Firebase - Kotlin Multiplatform - Android/iOS/Web/Node.Js(Firebase)
  

• FirestoreKMP - Firestore KMP Library
  

• measurer - Google Analytics(using measurement protocol).
  

• SegmenKT - A Segment wrapper for Kotlin Multiplatform.
  

• sentry-kotlin-multiplatform - Sentry SDK for Kotlin Multiplatform.
  

Atomic

• AtomicFu - The idiomatic way to use atomic operations in Kotlin
  

UUID

• uuid - Kotlin Multiplatform UUID
  

• kotlinx-uuid - kotlinx-uuid is a multiplatform (MPP) Kotlin library introducing support for UUID.
  

Paging

• Multiplatform Paging - Kotlin Multiplatform library for Pagination on Android and iOS
  

Kotlin/Native

• Stately - The library is set of multithreaded collection classes that will allow multithreaded mutation in Kotlin/Native.
  

• coroutineworker - Kotlin Coroutine-based workers for native
  

Units

• Measured - Intuitive, type-safe units of measure.
  

• KotlinCrypto/endians - Utils for converting Short, Int, Long to/from BigEndian and LittleEndian bytes.
  

Monads

• Kotlin utilities - Scala utility types: Option, Either, Try for Kotlin Multiplatform.
  

• kotlin-result - A multiplatform Result monad for modelling success or failure operations.
  

• ApiResult - A monad for declarative & functional error-handling with a rich DSL.
  

• Résultat - A fork of Kotlin Result with a loading state.
  

• value-clazz - Functionally equivalent to a Kotlin value class that implements an interface, but inheritance based and compiles to platform code.
  

WebAssembly

• ktmpwasm - A WebAssembly interpreter for Kotlin Multiplatform.
  

Metadata

• XMP Core for Kotlin Multiplatform - Kotlin Multiplatform port of Adobe's XMP SDK.
  

Parsing

• Ksoup - HTML & XML Parser (Jsoup Alternative)
  

• RSS-Parser - A Kotlin Multiplatform library to parse a RSS Feed
  

Debug

Logging

• Napier - Logging library for Kotlin Multiplatform.
  

• KmLogging - High performance, composable multiplatform logging.
  

• klogger - Logging library for Kotlin Multiplatform.
  

• Multiplatform-Log - Logging library for Kotlin Multiplatform.
  

• Kermit - Kotlin Multiplatform logging utility with composable log outputs and prebuilt loggers.
  

• Log4k - Logging library for Kotlin Multiplatform.
  

• Cabret-Log - Method call logging for Kotlin Multiplatform
  

• KmmAnkoLogger - fork of the AnkoLogger for use it with Kotlin Multiplatform Mobile
  

Test

• assertk - Assertions for kotlin inspired by assertj.
  

• Atrium - A multiplatform assertion library for Kotlin.
  

• konform - Portable validations.
  

• kotest-assertions - Multiplatform assertions and test utilities.
  

• kotest-framework - Multiplatform test framework for Kotlin.
  

• mockk - Mocking library for test.
  

• Mockative - Mocking for Kotlin/Native and Kotlin Multiplatform using the Kotlin Symbol Processing API (KSP)
  

• MocKMP - A Kotlin/Multiplatform Kotlin Symbol Processor that generates Mocks & Fakes.
  

• Mokkery - Mocking library for Kotlin Multiplatform based on compiler plugin.
  

• kotlinx-resources - Multiplatform library for reading resources in tests.
  

• Truthish - Multiplatform library with a testing API inspired by Google Truth.
  

• testmints - Lightweight test semantic-sugar, to improve readability.
  

• jsmints - A suite of libraries and gradle plugins for working with Kotlin JS, with a focus on testing and version updating.
  

Annotation Processor

• MpApt - Kotlin Native/JS/JVM Annotation Processor library
  

• kotlin-native-suspend-function-callback - Kotlin Multiplatform compiler plugin to generate a callback implementation for suspended functions so they are visible from Kotlin Native
  

• trckr - KSP processer that simplifies the collection of analytics
  

• KMP-ComposeUIViewController - KSP library for generating ComposeUIViewController and UIViewControllerRepresentable files when using Compose Multiplatform for iOS
  

GUI

• moko-widgets - Declarative UI and screens management in common code for mobile (android & ios) Kotlin Multiplatform development
  

• kgl - This library provides a thin OOP wrapper with DSLs to make programming with vulkan easier.
  

• kotlin-libui - Kotlin/Native interop to libui: a portable GUI library
  

• kotlin-material-ui - Kotlin Wrapper Library of Material-UI
  

• muirwik - Kotlin Wrapper Library of Material-UI
  

• compose-macos-theme - Multiplatform MacOS theme written in Compose UI
  

• componentbox - A Kotlin multiplatform library for building dynamic server-driven UI
  

• kontrol - A Kotlin Multiplatform library for creating a debugging menu
  

• koala-plot - A Compose Multiplatform based charting and plotting library written in Kotlin
  

• Material Theme Preferences - Switching Dark/Light Material themes on Compose
  

• DrawBox - The first multiplatform library to draw anything on canvas.
  

• typist-cmp - A Highly Customisable Typing Animation Library for Compose Multiplatform (Android & iOS)
  

• KodeView - Kotlin Multiplatform syntax highlighting views.
  

Command Line Interface

• Clikt - Multiplatform command line interface parsing for Kotlin
  

• Command_Parser - Multiplatform command parser using kotlinx.coroutines
  

• Kotter - Multiplatform library for Kotlin command-line applications with support for text styling, animations, timers, and input.
  

• Mordant - Multiplatform text styling for Kotlin command-line applications
  

Firebase

• Firebase Kotlin SDK - Firebase SDK for Kotlin Multiplatform projects (Firebase Authentication, Realtime Database, Cloud Firestore, Cloud Functions, Cloud Messaging and Cloud Storage).
  

Architecture

• kompass - Kotlin Multiplatform Router for Android and iOS

• Decompose - Kotlin Multiplatform lifecycle-aware business logic components (aka BLoCs) with routing functionality and pluggable UI (Jetpack Compose, SwiftUI, JS React, etc.), inspired by Badoos RIBs fork of the Uber RIBs framework.
  

• Decompose-Router - Compose Multiplatform navigation library that leverage Decompose to create an API inspired by Conductor
  

• oolong - MVU for Kotlin Multiplatform

• moko-mvvm - MVVM architecture components for mobile multiplatform with LiveData (iOS and Android)
  

• MVIKotlin - MVI framework for Kotlin Multiplatform.
  

• Orbit MVI - MVI framework for Kotlin Multiplatform.
  

• ReduxKotlin - Redux implementation for Kotlin (supports multiplatform JVM, native, JS, WASM)
  

• FlowMVI - Plugin-based Kotlin Multiplatform MVI framework.
  

• ReKamp - Port of ReKotlin to Kotlin Multiplatform, which corresponds to ReKotlin/1.0.4.
  

• Kaskade - Simplifying UI state management in Kotlin Multiplatform.
  

• Flywheel - A simple and predictable state management library inspired by Redux and a few more. Fully built on top of coroutines using the concept of actors.
  

• KStateMachine - KStateMachine is a Kotlin DSL library for creating state machines and hierarchical state machines (statecharts).
  

• CommonStateMachine - CommonStateMachine is a small non-opinionated library to implement MVI with the state-machine pattern.
  

• Premo — Presentation Model (aka View Model) and Navigation. Focus on writing logic instead of solving common and boring UI related issues: lifecycle, persistence, navigation, etc.
  

• multiplatform-viewmodel — Shared ViewModel in Kotlin Multiplatform
  

• Direkt - Kotlin Multiplatform Router for Android, iOS, Js
  

• compose_bloc - State Management and Navigation Library for Jetpack Compose and Compose Multiplatform.
  

• Ballast - Opinionated Application State Management framework for Kotlin Multiplatform

• Kotlin Bloc - A simple, predictable and composable UI framework for Kotlin Multiplatform
  

• kmp-viewmodel - Shared ViewModel in Kotlin Multiplatform - A Kotlin Multiplatform library that provides shared MVVM for UI applications. Components are lifecycle-aware on Android.
  

• Blackbox - A lightweight framework that includes a set of architecture tools and approaches for building scalable, fully multiplatform applications (100% shared logic). Streamlines project modularization through the separation into independent parts and provides features like lifecycle-aware components, declarative navigation, and constructor-based DI.
  

Project templates

• moko-template - Template project of a Mobile (Android & iOS) Kotlin MultiPlatform project with the MOKO libraries and modularized architecture
  

• KMMT - KMMT is a Multi-Module KMM based project template designed to simplify the KMM development. It uses a simplified approach that can be shared both in android and iOS easily. This template include network module, persistence module, resource module, analytics module ( with ios native library integration), domain module, presenter module etc.
  

Docs

• dokka (official) - Documentation Engine for Kotlin.

Build & Development Tools

• BuildKonfig - It reads values from properties and adds those into Build config like Android.

• kotlin-native-cocoapods - Gradle plugin for configuring Kotlin/Native with Cocoapods.

• kotlin-frontend-plugin (official) - Gradle plugin for frontend development.
  
  => Deprecated move here

• kotlin-dce - This tool allows to strip out unused properties, functions and classes from the generated JS.
  

• xcode-kotlin - Kotlin Native Xcode Plugin

• xcode-compat(official) - AppCode helper for Kotlin/Native and Xcode

• KotlinXcodeSync - Sync Kotlin files with an Xcode project

• kotlinx-benchmark(official) - https://github.com/Kotlin/kotlinx-benchmark
  

• mobile-multiplatform-gradle-plugin - Gradle plugin to make Multiplatform projects settings simplier
  

• kotlinx-ast(official) - Generic AST parsing library for kotlin multiplatform

• KaMPKit - KaMP Kit by Touchlab is a collection of code and tools designed to get your mobile team started quickly with Kotlin Multiplatform

• Zakadabar - A Kotlin Multiplatform library for full-stack software development
  

• multiplatform-swiftpackage - This is a Gradle plugin for Kotlin Multiplatform projects that generates an XCFramework for your native Apple targets and creates a matching Package.swift file to distribute it as a binary target.

• Swift Klib - This is a Gradle Plugin to build Swift code as part of your Kotlin Multiplatform project. With this plugin, you can access Swift-only iOS libraries, such as CryptoKit and experiment with Swift to Kotlin interoperability.

Artificial Intelligence

Symbolic AI

• 2P-Kt - A Kotlin-based, multi-platform, open ecosystem for symbolic artificial intelligence (AI) and logic programming (LP), currently supporting many facilities for LP and a full-fledged, extensible, ISO-standard Prolog solver.
  

• Y-Chat - Y—Chat is a Kotlin Multiplatform (KMP) project that provides a simple API for integrating the powerful ChatGPT language model developed by OpenAI into mobile applications running on multi platforms.
  

Social

tgbotapi

• tgbotapi - Strongly-typed API wrapper for Telegram Bot API with fully covered API and a lot of additional DSLs on top of base API.

Math

• Multiplatform expressions evaluator - Runtime infix expressions evaluator.
  

• Multik - Multiplatform library for Kotlin, specializing in multidimensional array operations with features like static typing and dimensional consistency, offering high-speed mathematical and arithmetic operations, as well as linear algebra functionalities.
  

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