CATEGORY
Asynchronous 9,790 crates
Data as of 2026-07-25 (crates.io database dump, timestamp 2026-07-25T02:00:36Z). Source: crates.io · db-dump.tar.gz · methodology & corrections.
hotaru_tlsTLS transport for the Hotaru framework167MIT
behestA Rust-native cloud agent runtime with typed tools, pluggable memory, queues, and observability.167MIT OR Apache-2.0
tripo-apiUnofficial async Rust client for the Tripo 3D Generation API167MIT
getitdoneExperimenting with a simple Mongo-backed caller/worker bridge that keeps tracing context alive.167MIT
rust-elmElm Architecture for Rust: composable reducers, pure effects, async runtime.167MPL-2.0
scp-transportTransport abstraction layer for SCP (Shared Context Protocol)167Apache-2.0
bat-marketsFutures-first headless Rust exchange engine with honest Binance/Bybit/MEXC linear futures support167MIT OR Apache-2.0
firq-asyncTokio async adapter for firq-core166MIT OR Apache-2.0
philiprehberger-safe-shutdownGraceful shutdown coordination with timeout support for Rust166MIT
jamjet-policyJamJet policy engine — tool blocking, approval requirements, model allowlists166Apache-2.0
kcp2Rust implementation of KCP protocol with async support (std/no_std/Embassy)166MIT
crux-agenticBuilt-in step handlers for crux-script pipelines166MIT
mailrs-outbound-queueOutbound mail queue primitives: DKIM signing, DSN generation, MTA-STS lookup, retry/backoff, with a pluggable store trait and a…166Apache-2.0 OR MIT
atomr-infer-python-bridgePython-resident GPU runtime wiring for atomr-infer. PythonGpuBridge + python-pinned dispatcher used by the vLLM and other…165Apache-2.0
enact-redisRedis-backed InboxStore, StateStore, and SignalBus for Enact165MIT
kojin-macrosProc-macro support for the kojin task queue (#[kojin::task])165MIT OR Apache-2.0
wuhu-providersLLM provider adapters for the Wuhu agent framework (Anthropic, OpenAI).165MIT OR Apache-2.0
caudal-sdkCaudal SDK - Event observability for distributed systems164MIT OR Apache-2.0
latchlm-openaiOpenAI provider implementation for LatchLM164MPL-2.0
elicit_tokioElicitation-enabled tokio shadow crate — MCP tools for async time, sync primitives, and runtime inspection164Apache-2.0 OR MIT
iqosA Rust crate for controlling IQOS devices over BLE and USB164GPL-3.0
agui-rs-encoderSSE and protobuf encoding for AG-UI events164Apache-2.0
hexeract-macrosProcedural macros for the Hexeract messaging framework163MIT OR Apache-2.0
futures-byteorderA modern async byteorder library for the smol/futures-lite ecosystem163MIT OR Apache-2.0
starlang-macrosErgonomic macros for Starlang163MIT OR Apache-2.0
rtcom-coreCore library for rtcom (Rust Terminal Communication): serial device abstraction, event bus, and session orchestration.163Apache-2.0
nurtex-proxyLibrary for creating connections via SOCKS5 / SOCKS4 proxy.163MIT
latchlm-geminiGoogle Gemini provider implementation for LatchLM162MPL-2.0
starlang-applicationApplication lifecycle management for Starlang162MIT OR Apache-2.0
widgetkit-runtimeLifecycle-driven runtime, scheduler, and task model for WidgetKit.162MIT
ai2070-net-sdkErgonomic Rust SDK for the Net mesh network162Apache-2.0
dyn-utils-macrosA utility library for working with trait objects.161MIT OR Apache-2.0
dubbo-rs-remotingNetwork transport abstraction for Apache Dubbo Rust — ExchangeClient, ExchangeServer, Codec, ConnectionPool161Apache-2.0
ansiq-renderFramebuffer, diff generation, and terminal patch emission for Ansiq.161MIT
bsky-bot-sdkAn ergonomic, event-driven SDK for building Bluesky (AT Protocol) bots in Rust, on top of atrium's bsky-sdk.161MIT OR Apache-2.0
busybeaverThis Beaver executes your Futures independently of your worker threads, supporting scheduling strategies such as time intervals,…161MIT OR Apache-2.0
skg-authAuthentication provider traits for skelegent160MIT OR Apache-2.0
armature-webhooksWebhook sending and receiving for Armature160Apache-2.0
latchlm-openrouterOpenRouter provider implementation for LatchLM160MPL-2.0
celers-beatPeriodic task scheduler for CeleRS (Celery Beat equivalent)160Apache-2.0
citadel_io_macrosProcedural macros for citadel_io (the ErrorRegistry derive)160MIT OR Apache-2.0
saola_mysql_asyncTokio based asynchronous MySql client library.160MIT/Apache-2.0
otherone-mcpMCP (Model Context Protocol) — 连接外部工具服务器的协议实现160MIT
serverust-cliCLI serverust: scaffolding (new/generate), dev, build, deploy lambda, info, openapi.159MIT OR Apache-2.0
reratuiA modern, reactive TUI framework for Rust with React-inspired hooks and components, powered by ratatui159MIT OR Apache-2.0
enigma-transport-webrtcWebRTC transport bindings for Enigma secure messaging sessions159MIT
swf-runtimeRuntime engine for Serverless Workflow DSL — execute, validate, and orchestrate workflows159Apache-2.0
linear-apiUnofficial async Rust client for the Linear GraphQL API (API-key auth)159MIT OR Apache-2.0
echo_orchestrationOrchestration layer for echo-agent framework (workflow, human-loop, tasks)159MIT
echo_executionExecution layer for echo-agent framework (sandbox, skills, tools)159MIT
vibe-readyComposable runtime, logging, scheduling, and storage foundations for vibe-coding Rust projects.159MIT
axocoatl-a2aAgent-to-Agent (A2A) protocol implementation for Axocoatl159Apache-2.0
pulsehiveShared Consciousness SDK for Multi-Agent AI Systems159AGPL-3.0-only
qubit-execution-servicesAggregated execution services facade for blocking, CPU-bound, Tokio blocking, and async IO tasks158Apache-2.0
ash-rpcA comprehensive JSON-RPC 2.0 implementation with multiple transport layers and advanced features158Apache-2.0
dog-axumAxum web framework integration for DogRS - HTTP handlers, middleware, and web utilities158MIT OR Apache-2.0
paladin-llmLLM provider adapters for the Paladin framework — OpenAI, Anthropic, DeepSeek, and mock158MIT
coclaiErgonomic Rust wrapper for codex app-server with runtime safety and release gates.158MIT
wuhu-engineThe Wuhu execution engine: streaming loop, concurrent tools, HITL.158MIT OR Apache-2.0
oxihttpOxiHTTP Pure-Rust HTTP facade for the COOLJAPAN ecosystem.158Apache-2.0
dubbo-rs-filterFilter chain framework and built-in governance filters for Apache Dubbo Rust158Apache-2.0
atomr-agents-avatar-provider-livelinkAvatar UDP Live Link sink: streams timecode-aligned audio + ARKit blendshape frames over UDP using the avatar-core CBOR wire…158Apache-2.0
ff-backend-sqliteFlowFabric EngineBackend impl — SQLite dev-only backend (RFC-023, Phase 1a scaffold)157Apache-2.0
kwokka-runtimescheduler, worker, task, memory, timer, and sync primitives157MIT OR Apache-2.0
qubit-concurrentConcurrent utilities library providing thread pools, task scheduling, synchronization primitives and other concurrent programming…157Apache-2.0
atomr-agents-avatar-provider-audio2faceAvatar audio→ARKit-blendshape provider backed by NVIDIA Audio2Face-3D. Currently a documented stub: the real runtime lives…157Apache-2.0
ritlersA task-length aware rate limiter that waits for tasks to finish before counting them against the rate limit157MIT OR Apache-2.0
kwokka-corefoundational types shared across the kwokka workspace157MIT OR Apache-2.0
rightsizeTokio-async-native, RAII-guard integration-test containers — core API157Apache-2.0
jk_bmsAsync library and CLI (jktool) for JIKONG (JK) Battery Management Systems over Serial, Bluetooth LE and CAN157MIT
strands-agents-macrosProcedural macros for the Strands AI Agents SDK156MIT
armature-cronScheduled task execution for Armature applications156Apache-2.0
cellos-sink-jsonlJSON-Lines EventSink for CellOS — appends CloudEvents to a local JSONL file. Dev / audit-archive use.156MIT OR Apache-2.0
wintf-winmsg-executorPer-thread async executor for Windows (fork of winmsg-executor)156MIT OR Apache-2.0
the-fourth-serverA lightweight tcp server/client pair for network programming155Apache-2.0
synth-ai-coreRust core for Synth AI SDKs - API client, streaming, tracing, and tunnels155MIT
imessage-watcherFilesystem watcher and database pollers for iMessage chat.db change events.155MIT
tokitai-mcp-serverMCP server scaffolding for Tokitai - Build AI-callable tool servers with zero runtime overhead155MIT OR Apache-2.0
sqlx-xuguXugu driver implementation for SQLx. Not for direct use; see the `sqlx` crate for details.155MIT OR Apache-2.0
qubit-event-busA lightweight, thread-safe in-process event bus for Rust154Apache-2.0
atomr-accel-patternsUniversal GPU actor blueprints for atomr-accel-cuda: DynamicBatchingServer, InferenceCascade, ModelReplicaPool,…154Apache-2.0
atomr-infer-runtime-litellmLiteLLM proxy provider for atomr-infer — implements ModelRunner against the LiteLLM unified API gateway, fronting…154Apache-2.0
quiche-h3An h3::quic bridge that runs hyperium h3 over Cloudflare quiche via tokio-quiche154MIT
wesichain-checkpoint-sqliteSQLite checkpoint backend for Wesichain154Apache-2.0 OR MIT
vk-bot-apiAsynchronous VK Bot API library for Rust154Apache-2.0
eventbus-contractEvent bus contract — facade crate re-exporting backends and helpers153MIT
orchestral-runtimeThread Runtime with concurrency, interruption, scheduling, LLM planners, actions, and API for Orchestral153MIT
tokiA minimal single-threaded async runtime for ultra-low-latency Linux systems153MIT
tasker-workerWorker foundation system for multi-language step execution153MIT
pi-aiUnified multi-provider LLM API (Rust port of @earendil-works/pi-ai). Streams from Anthropic, OpenAI, Google Gemini, and any…153MIT
cellos-sink-jetstreamNATS JetStream EventSink for CellOS — durable, ordered CloudEvent delivery with 90-day retention floor (FC-74).153MIT OR Apache-2.0
pincer-macroProcedural macros for pincer declarative HTTP client153MIT OR Apache-2.0
celers-broker-amqpRabbitMQ/AMQP broker implementation for CeleRS153Apache-2.0
neuron-cryptoCryptographic provider traits for neuron153MIT OR Apache-2.0
neuron-provider-anthropicAnthropic API provider for neuron-turn153MIT OR Apache-2.0
liteqHigh-performance job queue library for Rust using Redis with auto-retry, connection pooling, async handlers, and multi-consumer…153MIT
nexo-ext-registryPhase 31.0 — ext-registry index format types + parser + validation. The catalog of installable nexo plugins (out-of-tree…153MIT OR Apache-2.0
nacelle-coreShared pipeline, body, limits, lifecycle, telemetry, and TLS primitives for Nacelle.153MIT
rfeign-reqwestReqwest transport implementation for rfeign153MIT OR Apache-2.0
vector-coreCore library for Vector — the single source of truth for all Vector clients, SDKs, and interfaces.153MIT
eventide-macrosProcedural macros for the eventide DDD/CQRS toolkit: derive entities, entity ids, value objects and domain events with a single…153MIT OR Apache-2.0
embassy-supervisorA generic, HAL-agnostic task-lifecycle supervisor for the embassy async embedded framework: dependency-ordered bring-up/teardown,…152MIT OR Apache-2.0
acton-aiAn agentic AI framework where each agent is an actor152MIT
asanaclientRust SDK for the Asana API152MIT
openclaw-gatewayGateway server for OpenClaw152MIT
rust-dixrust-dix: A Rust dependency injection framework inspired by Microsoft.Extensions.DependencyInjection152MIT
reratui-macroProcedural macros for component definition, RSX syntax, and hook validation in Reratui152MIT OR Apache-2.0
malkuthA composable service-supervision toolkit for Rust152non-standard
wesichain-checkpoint-postgresPostgres checkpoint backend for Wesichain151Apache-2.0 OR MIT
kathaEvent sourcing core traits and types for Rust (SQLite/Postgres backend in katha-sqlx)151MIT OR Apache-2.0
edge-nal-openthreadAn implementation of edge-nal's UDP traits over OpenThread (Thread), using `openthread`151MIT OR Apache-2.0
woollama-engineThe pure-Rust woollama engine (no PyO3): inferencer registry, complete/stream, the recipe<->tool orchestrate loop. Consumed by…151MIT
embacle-copilot-sdkVendored fork of copilot-sdk-rust — Rust SDK for GitHub Copilot CLI150MIT
synkit-coreA fast, syn-like incremental parser framework for Rust150MIT
synkit-macrosA fast, syn-like incremental parser framework for Rust150MIT
cellos-sink-dlqDead-letter queue wrapper EventSink for CellOS — spills CloudEvents to disk when the primary sink fails. Replayable.150MIT OR Apache-2.0
pipe-ioTyped source-transform-sink pipelines with backpressure, batching, windowing, and per-stage error isolation. A lightweight…150Apache-2.0
celers-backend-dbDatabase (PostgreSQL/MySQL) result backend for CeleRS150Apache-2.0
yot_run_macrosThe wrapper macro for a work-stealing, multi-threaded async executor with non-blocking scheduling.150MIT OR Apache-2.0
magnetar-fakesIn-process Pulsar broker fake — frame-in / frame-out, with per-command hooks for fault injection. Dev-dependency only.150Apache-2.0
rok-queue-macrosDerive macro for the rok-queue Job trait150MIT
serverust-macrosMacros declarativas do serverust: roteamento, derives ApiError/Validate, injectable, metric.149MIT OR Apache-2.0
aion-store-haematiteSingle-node haematite-backed event store implementation for Aion workflows.149AGPL-3.0-only
embassy-supervisor-macrosProc-macro for embassy-supervisor: declares a task graph and computes its topological order at compile time.149MIT OR Apache-2.0
eidollmPortable native LLM provider adapter SDK.149AGPL-3.0-only OR MIT
hexeractRust messaging framework: Mediator, Bus, Outbox, Sagas, Scheduler, Request/Reply.149MIT OR Apache-2.0
disposition_input_rtRuntime mutation operations for `disposition` input diagrams.149MIT OR Apache-2.0
async-graphql-extrasExtra extensions for async-graphql148MIT OR Apache-2.0
webliteA very simple `no_std` implementation of the HTTP and WebSocket protocols aimed at embedded use cases148MIT
litcheeAsync, builder-pattern Rust client for the Lichess API: full endpoint coverage, NDJSON streaming, and OAuth2 PKCE ('Log in with…148MIT
celers-broker-sqsAWS SQS broker implementation for CeleRS148Apache-2.0
celers-backend-rpcgRPC/RPC result backend for CeleRS148Apache-2.0
neuron-mcpMCP client and server bridging MCP tools with neuron ToolRegistry148MIT OR Apache-2.0
rigloopA small agent loop harness for Rig.148MIT OR Apache-2.0
frankenlabDeterministic testing harness for async Rust: record, replay, and minimize concurrency bugs.148LicenseRef-MIT-OpenAI-Anthropic-Rider
ecson_networkWebSocket and WebTransport server implementations for the Ecson server framework148MIT
nautilus-architect-axAX Exchange integration adapter for the Nautilus trading engine148LGPL-3.0-or-later
registry-ioHigh-performance event/callback registry for Rust. Sync-first with optional async. Lock-free reads, zero-allocation hot path,…148Apache-2.0 OR MIT
entelix-agentsentelix production agent runtime — ReAct / Supervisor / Hierarchical / Chat recipes, tool-side layer ecosystem (approval / event…148MIT
sql-orm-sqlserverSQL Server query compilation for sql-orm.148MIT
tokio-eventsA modern, type-safe async event bus for Rust applications148MIT OR Apache-2.0
summer-jaebsummer-rs plugin for the jaeb snapshot-driven event bus147MIT
kwokka-netTCP networking for the kwokka runtime147MIT OR Apache-2.0
ubl-mcpSecure, audited Model Context Protocol (MCP) client/server with policy gates and audit logging.147MIT
rakka-inference-remote-coreRemote-provider infrastructure for rakka-inference — distributed rate limiter (CRDT), circuit breaker, retry/backoff, SSE parser,…147Apache-2.0
hydracache-simDeterministic simulation harness for HydraCache cluster behavior.147Apache-2.0
payments-rsA Rust library for integrating with multiple payment providers (Stripe, Revolut, LND, Bitvora)147MIT
stredeAsync, zero-alloc, pull-based deserialization for Rust147MIT
oxicastAsync Google Cast (Chromecast) client for Rust, built on tokio146MIT OR Apache-2.0
kwokka-fsasynchronous file I/O for the kwokka runtime146MIT OR Apache-2.0
cellos-broker-vaultHashiCorp Vault SecretBroker for CellOS — runtime-leased credentials per cell with auto-revoke on teardown.146MIT OR Apache-2.0
rakka-inference-runtimeRuntime-agnostic actor topology for rakka-inference — gateway, request actor, dp-coordinator, engine-core, two-tier worker,…146Apache-2.0
oharness-traceEvent sinks, trajectory JSONL writer/reader, and ReplayLlm for open-harness146MIT OR Apache-2.0
oxigdal-kafkaApache Kafka integration for OxiGDAL - async producer/consumer with schema registry and transactions146Apache-2.0
neuron-provider-openaiOpenAI API provider for neuron-turn146MIT OR Apache-2.0
oxnRedis-backed async job queue for Rust, with optional web dashboard.145MIT OR Apache-2.0
xds-servergRPC server implementation for xDS control plane145MIT OR Apache-2.0
cellos-broker-oidcOIDC SecretBroker for CellOS — fetches workload identity tokens via OIDC token exchange (GitHub Actions, GitLab CI, Azure DevOps).145MIT OR Apache-2.0
cellos-export-s3S3 ExportSink for CellOS — uploads per-cell evidence bundles to an S3 bucket for centralised audit retention.145MIT OR Apache-2.0
cellos-sink-redactRedacting wrapper EventSink for CellOS — strips configured fields from CloudEvents before forwarding to an inner sink.145MIT OR Apache-2.0
lunaris-ingestAtomic ingest pipeline for the Lunaris agent memory engine145Apache-2.0
tasker-orchestrationOrchestration system for tasker workflow coordination145MIT
celers-broker-sqlSQL database broker implementation for CeleRS (MySQL)145Apache-2.0
neuron-provider-ollamaOllama local model provider for neuron-turn145MIT OR Apache-2.0
gearbox-rsA lightweight Rust web framework with dependency injection145MIT
dubbo-rs-serializationSerialization abstraction for Apache Dubbo Rust — Serialization trait for wire-format encoding145Apache-2.0
neuron-loopAgentic loop for Rust — multi-turn tool dispatch, streaming, and conversation management over any LLM provider144MIT OR Apache-2.0
elevenlabs-sdkComprehensive async Rust SDK for ElevenLabs API with TTS, STT, voice management, and WebSocket streaming144Apache-2.0
atomr-agents-py-bindingsPyO3 bindings: host (run harnesses) and guest (Python-defined tools/strategies).144Apache-2.0
cellos-host-telemetryHost-side telemetry receiver for CellOS — vsock listener that host-stamps and signs CloudEvents emitted by the in-guest…144MIT OR Apache-2.0
nautilus-coinbaseCoinbase Advanced Trade integration adapter for the Nautilus trading engine144LGPL-3.0-or-later
overseerd-analyzeBuild-time dependency-injection graph analysis for the overseerd daemon framework.144MIT
jmap-mail-clientRFC 8621 JMAP for Mail client — Email, Mailbox, Thread, Identity, EmailSubmission methods144MIT OR Apache-2.0
rustigram-miniappAxum extractors, initData validation, and ts-rs type bridge for Telegram Mini Apps144MIT
another-ai-sdkProvider-neutral Rust SDK for streaming chat and tool calling.144MIT
cellos-export-httpHTTP ExportSink for CellOS — POSTs per-cell evidence bundles to a configured webhook endpoint.143MIT OR Apache-2.0
cellos-export-localLocal-filesystem ExportSink for CellOS — writes per-cell evidence bundles to an operator-configured directory.143MIT OR Apache-2.0
fluxion-mergeMerge multiple Fluxion streams with ordering guarantees143Apache-2.0
oxigdal-etlStreaming ETL framework for continuous geospatial data processing with OxiGDAL143Apache-2.0
rucoraHigh-performance, type-safe LLM agent framework with built-in tools and multi-provider support143MIT
elicit_serverCross-crate workflow plugins for elicitation — code recovery, multi-crate compositions, and server-side orchestration143Apache-2.0 OR MIT
pexels-sdkRust client with multiple media APIs. Pexels API Address: https://www.pexels.com/api/documentation/, Pixabay API Address:…143MIT OR Apache-2.0
tirea-protocol-acpAgent Client Protocol (ACP) JSON-RPC 2.0 encoding adapter for tirea143MIT OR Apache-2.0
kiomqAn all-in-one task-queue and orchestration library for Rust143MIT
netease-qq-music-apiUnified async API bindings for Netease Cloud Music and QQ Music142MIT
ferobotA fully-featured, auto-generated Telegram Bot API library for Rust. All 285 types and 165 methods - strongly typed, fully async.142MIT
mcpkit-warpWarp integration for mcpkit142MIT OR Apache-2.0
stratneo-nautilus-indicatorsTechnical indicators for the Nautilus trading engine142LGPL-3.0-or-later
checkstream-classifiersML and pattern-based classifiers for toxicity, PII, and prompt injection detection142Apache-2.0
gemini-chat-apiAsync Rust client for Google's internal Gemini Chat API142MIT
nautilus-dydxdYdX v4 exchange integration adapter for the Nautilus trading engine142LGPL-3.0-or-later
souchy-sqlx-crudDerive macro for SQLx to implement Create, Read, Update, and Delete (CRUD) methods for you.141MIT
paladin-memoryMemory adapters for the Paladin framework — Garrison (conversation history) and Sanctum (vector search)141MIT
atomr-agents-hostatomr-agents host runtime — long-lived agent identity, memory, skills, hooks, schedules, channels, atop atomr actors.141Apache-2.0
ws-shard-managerA robust WebSocket connection manager with sharding, auto-reconnection, and hot switchover141MIT
juncture-coreCore types and traits for Juncture state machine framework141Apache-2.0
async-fusexAsync fuse library to make fuse develop easier140MIT OR Apache-2.0
dev-asyncAsync runtime verification for Rust: timeouts, deadlock detection, task tracking, hung-shutdown probes. The async failure modes…140Apache-2.0
paladin-battalionMulti-agent orchestration runtime for the Paladin framework — Formation, Phalanx, Campaign, Chain of Command, Conclave, Council,…140MIT
lane_coreCore OTP actor primitives for lane_switchboards: actors, supervision, linking, monitoring, and hot upgrade139MIT