Browse Kotlin Multiplatform libraries

Abstract SQLite interfaces with basic implementations, plus framework bindings and language-friendly extensions to build customized database access layers; intended as a lightweight alternative to higher-level ORMs.

Multi-format linear and matrix barcode detection and generation with high-performance, thread-safe engine, no external dependencies, extensive symbology support, outputs images, SVG or UTF‑8 representations.

Simplifies Bluetooth Low Energy usage with coroutine-based asynchronous APIs: scanning, connecting (autoConnect), GATT reads/writes, MTU/PHY management, notifications, and mock environments for testing.

Simplifies in-app purchases and subscription management with features like server-side receipt validation, real-time event notifications, remote product configuration, and seamless integrations for analytics and attribution tools.

Implements the Spotify Web API, enabling access to Spotify's public and private endpoints for browsing, searching, and managing playlists, tracks, and user data. Supports various authorization flows, automatic token refresh, and integrates with both client-side and server-side applications.

Enables simple access to Plotly functionality, facilitating the creation and rendering of interactive plots and charts. Supports HTML export, dynamic updates via Ktor server, JavaFX browser integration, Jupyter notebooks, and direct image rendering.

OpenTelemetry spec implementation offering both a native implementation and a compatibility façade over the Java SDK, with tracing, logging, and API/noop instrumentation modules.

Integrates Rive animations with a unified API for Android and iOS, offering easy integration, native performance, state machine support, and flexible configuration options. Currently experimental.

Implements a single-writer concurrent hashmap allowing lock-free, wait-free reads. Supports coroutines, ensuring non-blocking operations, and uses left-right concurrency for efficient data management.

Embed a YouTube video player in a Jetpack Compose app, offering customizable options like autoplay, controls, and fullscreen. Supports commands for loading, playing, pausing, and seeking videos.

Injection library for Compose, wrapping Koin. Configures dependency injection using `@Composable` functions, supports scoped dependencies, ViewModel integration, and Compose navigation enhancements.

Facilitates lazily-evaluated log calls using inline classes and functions, integrating with SLF4J. Supports idiomatic logger declarations, resistant to cut-and-paste errors, and improves logging performance by avoiding unnecessary computations.

Facilitates parsing capabilities by offering bindings to the tree-sitter library, enabling syntax tree generation and providing a plugin for generating language-specific source files. Includes bundled languages.

Wrapper for Bitcoin Core's secp256k1 library, facilitating cryptographic operations like signature generation and verification. Offers cross-platform support with native bindings for enhanced performance.

Wrapper around IndexedDB, enabling access via suspend functions for linear, non-callback control flow. Facilitates database creation, migration, transactions, and data operations with key ranges and cursors.

Enables creation of Telegram mini apps, offering features like viewport management, theme adaptation, and seamless integration with Telegram WebApp API for enhanced user experience.

Wraps PyTorch Lite libraries for seamless mobile model inferences, mirroring Android API functions. Simplifies memory management across platforms, ensuring efficient resource allocation and usage during model inference.

Enhances phone number handling by addressing performance issues and reducing method count in Android applications. Offers a repackaged API and custom instantiation methods for streamlined usage.

Coroutine-based client for managing music playback in Discord bots, integrating with Kord and JDA. Supports track loading, events, and offers Java compatibility through CompletableFuture API.

Turns natural-language prompts into full Material 3 themes at runtime — generating colors, typography, and shapes from LLM seeds, expanding via HCT, with per-key caching and presets.

Box2D v3 bindings mirroring original API; high-performance simulation, circle/polygon/capsule/segment shapes, opt-in contact/hit events, 64-bit collision filtering, world stepping and sleep controls.

Core infrastructure for a file-transfer system: unified network APIs, Realm-backed database, shared utilities, and an injection model abstracting API/database logic into simple manager calls.

Compose-first, lightweight icon library exposing the complete Iconsax set as strongly-typed, compile-time ImageVector icons in multiple styles; generated via Gradle for zero runtime parsing.

Wrapper for Tencent Mars XLog enables cross-platform logging with various levels like debug, info, and error, supporting Android, iOS, macOS, Windows, Linux, and web.

ZIP input/output streams with Java-compatible byte-array streams, DEFLATE via zlib, adapters for common I/O libraries, and comprehensive ZipEntry metadata plus streaming APIs.

Implements bindings of opentest4j with platform-specific adjustments, including modified serialization support, type exposure as `KClass`, `toValueWrapper()` method, and UTF-8 content decoding in `FileInfo`.

Enables GeoJson deserialization, supporting distinct implementations for JS and JVM while sharing base objects. Allows transforming strings into GeoJsonObjects and handling feature collections with custom properties.

Reads NFC data from Novo Nordisk insulin pens (NovoPen 6, Echo Plus); includes a lightweight protocol core and an NFC wrapper library for straightforward integration.

Wraps OS native spell checkers into a concise API for locale-aware single-word and sentence checking, suggestion generation, and runtime locale discovery—no bundled dictionaries required.

Enables integration with WeChat's Open SDK, offering functionalities like launching WeChat, sharing, payments, login, and mini-programs. Provides structured media message support and customizable event handling.