Browse Kotlin Multiplatform libraries

Save and restore serializable objects to disk with asynchronous IO, in-memory caching, FIFO read–write locks, default values, migration helpers and observable updates via flows.

Secure, encrypted AES-256-GCM key-value storage offering type-safe entries, Flow-based observation, coroutine-friendly async API, object serialization, hardware-backed key protection and flexible builder configuration.

Currency formatting, arithmetic and number-to-words conversion for monetary amounts, plus a composable numeric input with smart locale-aware formatting, key handling, and precision control.

Orchestrates native on-device speech-to-text into local app actions, cross-app MCP commands, or remote webhook workflows; offline-first, multilingual, privacy-respecting, with unified single-package API.

Tiny, Compose-first MVI toolkit enabling unidirectional state management via pure reducers, suspend side-effects and an interactor that folds events and upstream flows into StateFlow; easy to embed.

Shared architecture primitives for clean, layered apps: lifecycle-aware BaseViewModel exposing StateFlow with native-coroutines observation, ViewModelState marker, and sync/suspend/flow UseCase variants.

Lightweight coroutine-based unidirectional data-flow architecture for predictable state management, mapping events→actions→results→state, with interactor pipelines, side-effect handling, lifecycle-scope integration and UI screen binding.

MVI state management with ViewModel lifecycle, composable StateContent, reusable component DSL, typed navigation keys, Navigator API, predictive-back animations, ViewModelStore syncing and saveable backstack state.

Typed asynchronous clients for Twitch OAuth2, Helix REST API, EventSub WebSocket and IRC; stream-based auto-pagination, automatic EventSub reconnect/keepalive, pluggable token and logging.

Sealed state types modeling common UI transitions — loading, saving, mutating (with original/updated tracking), plus ResourceState that combines load/save flows for predictable, type-safe view-state handling.

Discovers smart TVs, speakers, routers and IoT devices via SSDP and mDNS concurrently, deduplicates results, resolves UPnP metadata, with preset and custom filtering.

Centimetre-accurate UWB spatial awareness: peer-to-peer TWR ranging, angle-of-arrival, FiRa STS security, exhaustive 10-state lifecycle, composable errors, and hardware fakes for testing.

Embeds QuickJS to fetch and run JavaScript modules at runtime, enabling hot-updates, bridged interfaces with serialization, modular caching, precompiled bytecode, profiling, and signature verification.

Type-safe suspendable navigation with result-passing (primitives and serializable objects), plus a lightweight MVI ViewModel interface to standardize UI state management.

OpenAI-compatible SDK offering chat completions (streaming and non-streaming), text embeddings, model browsing across 40+ models, SSE streaming, thread-safe singleton, and API-key redaction.

Unified Firebase Remote Config access through a single API, fetchAndActivate, typed getters, JSON export, simple initialize, optional auto-refresh and REST-backed local cache.

Immutable, append-only, cryptographically linked chain for tamper-evident local data sync with content deduplication, HTTP/TCP sync modules, reactive updates, pluggable persistence and conflict merging.

Blazing-fast AST-based Markdown engine with incremental parsing, token-by-token LLM streaming, full CommonMark coverage, theming, LaTeX math, linting, plugin directives and image loading.

Instruments classes at compile time to automatically track and visualize Compose State, Flows and function actions; adds diagram-style variable captures, optional stack traces, and pluggable loggers.

Wrapping LazyPagingItems into lazy columns that auto-handle loading, empty, error and pull-to-refresh states; exposes resolved paging state so UI code focuses only on state rendering.

Lightweight functional extensions for nullable handling, suspend-friendly mapping, type-safe casting, null-aware matching, and lift combinators for combining nullable values with concise chaining.

Extension utilities for reactive Flow streams: concise operators, converters, lifecycle-aware collectors, enhanced error handling, caching and testing helpers to simplify stream composition, transformation and consumption.

Audio recording engine with configurable sample rate, channels, encoding and output formats, reactive state (amplitude/duration), waveform-ready visual components, optional UI and lifecycle-safe controls.

Fast, localized offline Unicode emoji database offering powerful search, multilingual names/keywords, grouping, variant support, lazy SQLite connection with auto-close timeout, and reactive stream searches.

Opinionated toast component offering stacked, animated, and customizable toasts: multiple types/colors, positions, transitions, swipe-to-dismiss, actions/icons, durations, lazy performant rendering, and ViewModel-friendly updates.

High-level Bitcoin wallet API offering HD key derivation, multiple address types including Taproot, watch-only support, UTXO selection strategies, transaction creation/signing/broadcast, and pluggable sync/storage.

Production-ready multi-module component library offering shadcn/ui-style UI components (toaster, data table, carousel), typed navigation, structured ViewModel base, debounce/throttle coroutine utilities, Material3 theme-aware.

Real-time and file-based audio analysis with pitch detection (FFT/YIN), spectrum analysis, and note-frequency utilities including A4 tuning and formatted note output.

Tracks editable and applied values, exposes an uncommitted-change indicator, supports commit/revert operations, and grouping to commit or revert only dirty child states.

Headless, plug-and-play SDK offering networking, auth, HTTP cache, offline queue, logging, telemetry and MVI contracts; modular feature modules, dependency registry, and three integration paths including full offline-first with host SQL.