Browse Kotlin Multiplatform libraries

Regular-expression engine with deterministic worst-case performance, avoids backreferences/look-around, supports named captures, byte-oriented APIs, RegexSet multi-pattern scanning, iterators, and exposed internals/parser.

Line-by-line transliteration of an upstream identity tool, exposing system identity info (user, host, OS) with a native API, feature-parity, provenance headers and porting discipline.

Loads and parses .env-style key-value files with non-modifying and environment-modifying APIs, configurable loader, reader support, multiline/substitution handling, and compile-time/runtime loading options.

Line-by-line transliteration of a battle-tested base64 implementation offering high-performance encoders/decoders, engine-level APIs, canonical-padding handling, and configurable decoding for non-canonical inputs.

Handles push and local notifications via Firebase Cloud Messaging with simple initialization, configurable foreground display, image support, runtime permission helpers and unified API.

HTTP traffic inspector logging requests, responses, headers and bodies; supports mocking/overriding, HAR export, in-app UI, configurable filters, sanitization, retention and notifications.

High-performance bindings to libschnorr256k1 offering optimized secp256k1 BIP-340/Nostr APIs: key generation, Schnorr signing/verification (fast and batched), ECDH, SHA-256, automatic native loader.

Build typed property views over raw object maps, decode on-demand, edit known fields, and re-emit preserving unknown fields. Supports JSON/YAML delegates, slices and null-write modes.

Line-by-line transliteration of Starlark syntax: parser, AST and tooling matching upstream Rust, with provenance headers, AST-distance tracking and strict porting discipline.

Resumable tus protocol implementation offering a client, embeddable server library, standalone runnable server jar, shared protocol primitives, and end-to-end integration tests.

Encrypts and stores application data with simple save/load/delete API, alias-based key initialization, and coroutine-friendly async operations for secure persistent storage.

Chunked multipart uploads to cloud storage with pause/resume, retry and persistent upload state across restarts. Enqueued background engine, per-chunk progress stream, and pluggable HTTP callbacks.

Serialises data structures with robust reference and cyclic-graph handling, JSON-friendly output, pluggable strategies for object identity, and straightforward integration into serialization pipelines.

Unified networking fabric with session API, swappable transports, replicated CRDT data structures, Raft consensus and leadership, turn-based game and fair-deal utilities, conformance tests.

Elegant, type‑safe, locale‑aware date/time, interval, relative‑time, duration and period formatting via readable DSLs; smart interval merging, customizable formats, and implicit locale/timezone scoping.

Firebase-first SDK exposing coroutine-style suspending functions, reactive flows, and serialization-backed read/write for Firestore, Realtime Database, Auth, Functions, Storage, Messaging, Installations.

In-app support chat backed by Supabase, real-time messages, media, emoji reactions, swipe-to-reply quotes, shared conversation state with agent console, and anonymous client sign-in.

Line-by-line transliteration of RustCrypto/hashes, offering API parity across many cryptographic hash algorithms (SHA‑1, BLAKE2, MD5, …); includes source provenance headers.

Port of the ANTLR v4 runtime translating Java sources into a portable implementation, enabling ANTLR-generated parsers; runtime API parity work ongoing.

Automatic generation of type-safe navigation routes, serializers, per-screen Actions, wrappers and screen mappers from annotated Composable screens, eliminating manual polymorphic serialization and navigation boilerplate.

Multiplatform IM SDK: unified network, sync, local DB and event layers with Wire-generated protobufs, Ktor client, SQLDelight, coroutines and catalog-driven Gradle dependency management.

Arrow-shaped chat popovers with smart screen-edge positioning, modal barrier featuring anchor hole cutout, animated pivot transitions, configurable arrow/shape/spacing, and easy show/hide callbacks.

Coroutine-first mediator implementing CQRS and Vertical Slice patterns: requests routed to a single handler, notifications fan out, customizable behavior pipeline and registrar-based handler registration.

Bundles Stockfish 18 as packaged native engine, single dependency with coroutine-friendly suspend API for setPosition/search, singleton instance, thread-safe serialized calls, Full vs Lite NNUE variants.

A-Z grouped contact list with sticky section headers, right-side alphabet index bar and draggable floating cursor; highly customizable builders and optional leading/trailing list slots.

2D runtime for Compose apps offering scene/entity/system architecture, camera-aware rendering, normalized input events, asset registry, and optional physics including Barnes–Hut gravity.

Connector for an online multiplayer space game, offering client-side networking, object and event handling, messaging, and game-state synchronization; early beta for testing and development.

Local logging toolkit routing structured mobile SDK logs to a developer-hosted server; stores per-device/session JSONL, supports redaction, simple tail/curl inspection and agent workflows.

One-line audio recording, easy playback and OpenAI Whisper transcription via coroutine-style API; live waveforms, Compose-ready state/UI components, permission handling and WAV file I/O.

E2E testing framework for Compose UI apps offering unified DSL, zero production-code pollution, automatic app discovery/orchestration, and built-in headless-friendly test recording.