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.
iroh-h3HTTP/3 transport adapter bridging Iroh's QUIC P2P connections with the h3 HTTP/3 stack.1,108MIT
spring-axum-mybatisMyBatis-like SQL mapper integration for spring-axum via #[sql] and #[mapper].1,107MIT
nexo-taskflowLong-running multi-step task orchestration runtime for Nexo agents.1,105MIT OR Apache-2.0
camel-component-controlbusControlBus component for rust-camel1,105Apache-2.0
rragHigh-performance Rust framework for Retrieval-Augmented Generation with pluggable components, async-first design, and…1,101MIT
xai-sdkLightweight SDK for xAI's gRPC APIs1,101MIT
wf-connector-apiMinimal Arrow-native connector API for warp-fusion — BatchSource trait with RecordBatch support1,099Apache-2.0
celers-coreCore traits and types for CeleRS distributed task queue1,098Apache-2.0
mc-pingSimple Java Minecraft Server Pinger1,097non-standard
ant-libp2p-mdnsImplementation of the libp2p mDNS discovery method1,096MIT
async-result-extAsync extensions for Result<T, E> with async closures.1,094MIT
tamarinA high-volume distributed event streaming service, built on the powerful Tokio runtime.1,093MIT
ant-libp2p-dnsDNS transport implementation for libp2p1,093MIT
architect-tonicA gRPC over HTTP/2 implementation focused on high performance, interoperability, and flexibility.1,093MIT
ai-agents-disambiguationIntent disambiguation support for AI Agents framework1,092Apache-2.0
hightower-mdnsA naive Rust implementation of mDNS (Multicast DNS) for advertising and discovering hostnames on a local network1,090MIT OR Apache-2.0
tirea-extension-skillsSkill discovery, activation, and resource loading for tirea agent tool extensibility1,090MIT OR Apache-2.0
rat_quickdnsA high-performance, feature-rich DNS client library with support for multiple transport protocols, load balancing, caching, and…1,089LGPL-3.0
atomr-agents-skillSkills: bundled instruction+tool+sub-agent capabilities.1,089Apache-2.0
trzcinaAsync service lifecycle orchestration with cooperative cancellation and shutdown deadlines.1,086Apache-2.0
ringkernelGPU-native persistent actor model framework - Rust port of DotCompute Ring Kernel1,085Apache-2.0
lmonade-runtimeActor-based runtime for LLM inference orchestration and resource management1,083GPL-3.0-or-later
tirea-extension-observabilityLLM inference and tool-call telemetry aligned with OpenTelemetry GenAI conventions1,083MIT OR Apache-2.0
ai-agents-reasoningReasoning and reflection capabilities for AI Agents framework1,083Apache-2.0
lrcall-pluginslrcall-plugins is Proc macros for lrcall.1,081MIT
nnrp-transport-providerNNRP transport provider metadata, capability intersection, native discovery, and deterministic selection.1,081Apache-2.0
kcp-rsA Rust implementation of KCP Stream Protocol1,080MIT
serial-asyncA library that makes creating asynchronous serial drivers even simpler.1,079MIT
squarespace_commerceA package that permits interfacing with squarespace commerce APIs1,079MIT OR Apache-2.0
eventlog-coreEventlog core library1,079MIT
anp-rs-sdkANP Rust SDK - 智能体网络协议自动配置工具包,提供HTTP服务器自动配置、DID自动生成、智能体描述等功能1,075MIT
stratneo-nautilus-analysisPerformance analysis and statistics for the Nautilus trading engine1,074LGPL-3.0-or-later
smtp_sendSMTP email sending library with built-in DKIM signing and MX lookup support. / 支持内置 DKIM 签名和 MX 记录查询的 SMTP 邮件发送库。1,073MulanPSL-2.0
cyclic_pipeA library providing fixed-size, buffer pre-allocated cyclic pipe which support multi-producer and multi-consumer concurrent…1,073Apache-2.0 OR MIT
camel-configConfiguration and route discovery for rust-camel1,072Apache-2.0
qubit-casTyped compare-and-swap executor with retry-aware conflict handling1,070Apache-2.0
harness-rs-compactorFive-stage progressive context compactor for harness-rs — DefaultCompactor (structural) and ModelBackedCompactor (semantic).1,070MIT OR Apache-2.0
camel-language-rhaiRhai scripting language for rust-camel1,070Apache-2.0
aws_utils_firehoseAWS Kinesis Data Firehose utilities for Rust1,069MIT OR Apache-2.0
schemregAsync Confluent + AWS Glue schema registry client — wire format, traits, caching, HTTP1,069MIT OR Apache-2.0
htms_coreCore streaming HTML engine - The foundational magic behind progressive content loading without the complexity1,068MIT
harness-rs-modelsLLM model adapters for harness-rs — OpenAiCompat (DeepSeek/Groq/Together/Ollama), AnthropicNative (Messages API), MockModel.1,064MIT OR Apache-2.0
mcpxA Rust SDK for the Model Context Protocol (MCP)1,063MIT
actrActor-RTC: A WebRTC-native actor framework for distributed real-time systems1,062Apache-2.0
tinycororust bindings to minicoro1,062Apache-2.0
async-deferredA lightweight utility for spawning async tasks with fire-and-forget semantics and deferred result retrieval.1,058MIT
continue_streamA Swift-style AsyncIterator.Continuation-style channel for Rust1,058MIT OR Apache-2.0
folk-plugin-httpHTTP plugin for Folk — accepts connections via hyper and dispatches to PHP workers1,056Apache-2.0
harness-rs-hooksHookBus for harness-rs. Dispatches 27 lifecycle events with Allow/Deny/Inject/Mutate semantics. Optional OpenTelemetry feature.1,055MIT OR Apache-2.0
bongonet-opensslOpenSSL async APIs for Bongonet.1,054Apache-2.0
swink-agentCore scaffolding for running LLM-powered agentic loops1,054MIT
bongonet-boringsslBoringSSL async APIs for Bongonet.1,053Apache-2.0
progressorA modern, async-first progress tracking library1,053MIT
lash-s3-storeS3-compatible attachment storage adapter for the lash agent runtime.1,053MIT
seams-rs-coreRuntime-agnostic seams for strict-hexagonal testability: Clock, Sleeper, Spawner, FileSystem, AsyncFileSystem traits (no std…1,052MIT OR Apache-2.0
salvo-tusTUS support for Salvo web framework1,052Apache-2.0
vox-localCross-platform local IPC for vox - Unix sockets on Unix, named pipes on Windows1,052MIT OR Apache-2.0
stratneo-nautilus-portfolioPortfolio components and functionality for the Nautilus trading engine1,051LGPL-3.0-or-later
nautilus-okxOKX exchange integration adapter for the Nautilus trading engine1,051LGPL-3.0-or-later
hotaruSmall, sweet, easy framework with a protocol-neutral, no_std-ready core1,050MIT
polaris_graphGraph execution primitives for Polaris (Layer 2).1,049Apache-2.0
ant-libp2pPeer-to-peer networking library1,048MIT
fncacheA zero-boilerplate Rust library for function-level caching with pluggable backends1,047MIT
disposition_model_commonSVG diagram generator common data model types.1,046MIT OR Apache-2.0
stratneo-nautilus-tradingStrategy machinery and controllers for the Nautilus trading engine1,044LGPL-3.0-or-later
vox-inprocessIn-process transport for vox — WASM-to-JS message passing without network1,042MIT OR Apache-2.0
exchange-apiwsExchange REST and WebSocket clients — spot trading, futures, account management, and live data streams1,040MIT
nervemqPortable, SQS-compatible message queue backed by SQLite.1,039Apache-2.0
specializerLimited safe specialization on stable Rust with builder-like pattern1,039Apache-2.0 OR BSL-1.0 OR MIT
vex-queueAsync background worker queue for VEX Protocol1,037Apache-2.0
strutBackend in Rust: convenient and configurable with Strut.1,034MIT
green-rsA Rust implementation to interface into the Blockstream green-cli client for Bitcoin and the Liquid Network1,033MIT OR Apache-2.0
lash-postgres-storePostgreSQL-backed durable storage for the lash agent runtime.1,033MIT
flowbuilder-coreCore flow building functionality for FlowBuilder1,032Apache-2.0
camel-component-redisRedis component for rust-camel1,032Apache-2.0
ant-libp2p-metricsMetrics for libp2p1,031MIT
atomr-agents-personaPersona strategies: structural (Static, Big Five, MBTI, Jungian, Composite) + emphasis.1,031Apache-2.0
care-macroSupport (macro) crate for care game engine. Simple and easy game framework inspired by LÖVE.1,030ISC
vox-ffiFFI transport for vox — C-ABI function-pointer link for cross-language IPC1,030MIT OR Apache-2.0
websocket_toolkitA WebSocket toolkit for Rust, enabling efficient real-time communication with flexible reconnection and message handling…1,027MIT
libindigoCore API for developing INDIGO astronomy clients and devices.1,027MIT
uluaHigh level Luau bindings to Rust with async/await support1,027MIT
folk-extFolk PHP extension — runs the Folk server as a PHP extension (like Swoole)1,025Apache-2.0
gimbal_async_macrosGimbal Async macros package1,024MPL-2.0
async-sleep-akiIt provides simple `async_sleep()` that work well in both web browsers and native applications.1,023MIT OR Apache-2.0
mio-wakeqmio support for custom event queue via Waker1,022MIT
polaris_modelsModel provider interface and registry for Polaris1,018Apache-2.0
daimon-coreCore traits and types for the Daimon AI agent framework — implement Model to add providers1,017MIT OR Apache-2.0
ranvier-auditTamper-proof audit logging framework for Ranvier1,015MIT OR Apache-2.0
lamco-waylandWayland screen capture, XDG Portal integration, and video processing for Rust, by Lamco Development LLC1,015MIT OR Apache-2.0
tlq-clientRust client for TLQ (Tiny Little Queue) message queue server1,014MIT
adk-audioAudio intelligence and pipeline orchestration for ADK-Rust agents1,013Apache-2.0
torznab-toolkitA safe, multi-threaded, async toolkit for adding Torznab APIs to programs.1,012GPL-3.0-or-later
blessCLI logging helper for repeated runs with metadata tracking.1,011MIT
crdb-serverConcurrently Replicated DataBase1,010AGPL-3.0-or-later
nnrp-runtimeTransport-neutral NNRP client/server session runtime over framed async transport slots.1,009Apache-2.0
cloud_terrastodon_entrypointMain entrypoint for the Cloud Terrastodon CLI1,009LiLiQ-R-1.1
oxpulse-sfu-kitReusable multi-client SFU kit built on top of str0m. Simulcast, fanout, per-peer event routing.1,008MIT OR Apache-2.0
waterarkWatermark for implementing optimistic SSI (Serializable Snapshot Isolation) transactions1,006MIT OR Apache-2.0
bel7-axumCommon Axum web server utilities: static files, pagination, WebSocket helpers1,005MIT OR Apache-2.0
volans-plaintextPlaintext transport for volans1,004MIT
tokio-prometheus-metered-channelMetered tokio channels with Prometheus metrics integration1,004Apache-2.0
rs-sqs-receiverAn asynchronous AWS SQS message receiver framework with trait-based handlers and shared resource support1,002MIT OR Apache-2.0
nexo-web-searchMulti-provider web search client (Brave, Serper, etc.) for Nexo agents.1,002MIT OR Apache-2.0
rustling-dataCore data access layer for Rustling, supporting PostgreSQL and MongoDB1,001MIT OR Apache-2.0
rama-tls-acmeACME support for rama1,001MIT OR Apache-2.0
mlua-flow-irflow.ir async runtime + mlua binding — re-exports flow-ir-core (Pure Rust sync core) and adds AsyncDispatcher + eval_async + Lua…1,000MIT OR Apache-2.0
rusqlite-isleThread-isolated SQLite with cancellation, async bridge, and connection pool for rusqlite999MIT OR Apache-2.0
cortex-sourcesReady-made source implementations for various data inputs in the Cortex ecosystem999Apache-2.0
pitwallModern, type-safe Rust library for iRacing telemetry data999MIT
eztry-macroseasy-to-use utilities to add retry logic to async functions998MIT
acceptsMinimal traits and blanket impls for sync/async acceptors (pipeline foundation)998MIT OR Apache-2.0
crdb-indexed-dbConcurrently Replicated DataBase997AGPL-3.0-or-later
esrcPrimitives for implementing event sourcing and CQRS systems997MIT
background-runnerRun a heavy task in the background multiple times without blocking the triggering thread997Apache-2.0
sayiir-macrosProcedural macros for the Sayiir durable workflow engine996MIT
volans-wsWebSocket transport for volans995MIT
crdb-clientConcurrently Replicated DataBase993AGPL-3.0-or-later
crdb-sqliteConcurrently Replicated DataBase993AGPL-3.0-or-later
zino-salvoIntegrations with salvo for zino.993MIT
ai-agents-stateState machine for AI Agents framework993Apache-2.0
cerebras-rsHigh-performance Rust SDK for Cerebras Inference API - Low-latency AI model inference powered by Cerebras Wafer-Scale Engines990MIT
aerosocket-coreCore WebSocket protocol implementation for AeroSocket990MIT OR Apache-2.0
miyabi-workflowWorkflow DSL for Miyabi - Graph-based agent orchestration with .then(), .branch(), .parallel()987Apache-2.0
qubit-executorExecutor abstractions, task handles, and basic executor implementations for Qubit Rust libraries984Apache-2.0
volans-pingPing protocol for volans983MIT
ai-agents-processInput/Output processing pipeline for AI Agents framework983Apache-2.0
overseerd-configConfiguration for the Overseerd framework: format-agnostic loading (TOML/YAML) plus the DI-integrated Cfg/ConfigManager/reload…982MIT
camel-component-containerDocker/Container component for rust-camel — run, manage and listen to container events via the Camel routing engine982Apache-2.0
vstpVSTP - Vishu's Secure Transfer Protocol: A fast, secure, and extensible binary protocol for TCP and UDP981MIT OR Apache-2.0
mutiny-rsA Rust API wrapper for the Stoat chat platform.980MIT OR Apache-2.0
makcu-rsFast and modular communication interface using serial ports, built with async-first design in Rust.980MIT OR Apache-2.0
harness-rs-loopReAct agent loop, subagent isolation, and session record/replay (JSONL) for the harness-rs framework.980MIT OR Apache-2.0
megalibRust client library for Mega.nz cloud storage980MIT
seams-rs-stdStandard-library-backed production impls of seams-rs-core ports: SystemClock, StdSleeper, StdSpawner, StdFileSystem,…979MIT OR Apache-2.0
overseerd-macrosProcedural macros for the overseerd daemon framework (components, services, config, and RPC handlers).979MIT
camel-language-jsonpathJSONPath Language for rust-camel (RFC 9535)978Apache-2.0
openai-sdk-rsUnofficial, minimal async OpenAI API client for Rust with support for Chat Completions, Embeddings, Responses API, and tool…975MIT OR Apache-2.0
ortcOpenRTC or ObjectRTC?974MIT/Apache-2.0
tokio-memqSimple, high-performance in-memory async message queue973Apache-2.0
netkitNetworking toolkit972non-standard
turul-a2a-protoGenerated protobuf types for A2A Protocol v1.0 (lf.a2a.v1)972MIT OR Apache-2.0
monolakeHigh Performance Proxy base on Monoio972MIT/Apache-2.0
wasm-smtp-tokioTokio + rustls socket adapter for wasm-smtp.972Apache-2.0
tower-resilience-hedgeHedging middleware for Tower services - reduces tail latency via parallel requests972MIT OR Apache-2.0
hydracache-actuator-axumAxum read-only actuator endpoints for HydraCache diagnostics.971Apache-2.0
camel-component-sqlSQL component for rust-camel (PostgreSQL, MySQL, SQLite via sqlx)969Apache-2.0
enact-coreCore agent runtime for Enact - Graph-Native AI agents968MIT
ruchei-itertoolsasync itertools, subproject of ruchei963MIT OR Apache-2.0
atomr-agents-instructionInstructionStrategy + ComposedInstructionStrategy<P, T, B> assembler.963Apache-2.0
volans-muxingMuxing multiplexing protocol for volans962MIT
argentor-coreCore types, error handling, and event bus for the Argentor AI agent framework962AGPL-3.0-only
actr-platform-nativeNative platform provider for Actor-RTC: SQLite storage, ed25519-dalek crypto, filesystem operations961Apache-2.0
praxis-llmProvider-agnostic LLM client with OpenAI/Azure support and streaming960MIT
capnweb-coreCore protocol implementation for Cap'n Web RPC - capability-based security with promise pipelining959MIT OR Apache-2.0
net-meshHigh-performance, schema-agnostic, backend-agnostic event bus959Apache-2.0
bamboo-sdkErgonomic top-level Agent SDK facade for the Bamboo agent framework959MIT
camel-language-xpathXPath Language for rust-camel (XPath 1.0 via sxd-xpath)959Apache-2.0
chunnelAsync mpmc(multi producer multi consumer) channel958MIT
atomr-agents-tts-coreCore types and traits for atomr-agents text-to-speech: TextToSpeech / SynthesisStream / RealtimeSession traits, Capabilities,…955Apache-2.0
overseerd-macros-coreShared codegen library for the Overseerd proc-macros: attribute parsing, component/hook/method models, descriptor-slice emission,…954MIT
nenjo-eventbusTransport-agnostic event bus for routing agentic AI workflow commands over NATS or custom transports954Apache-2.0
mill-ioA lightweight event loop library for Rust providing efficient non-blocking I/O management953Apache-2.0
afastA high-performance web backend framework for Rust. Auto generate client code (js, ts, kt, rs).952MIT
blurseBlurse: A blursed pure Rust user-space interface to the Linux Bluetooth subsystem951MIT/Apache-2.0
sdtnSpaceArth DTN - A Rust-based implementation of Delay Tolerant Networking (DTN) for resilient communication949MIT OR Apache-2.0
rumpsteak-aura-choreographyChoreographic programming for Rumpsteak - effect-based distributed protocols949MIT OR Apache-2.0
axocoatl-coreCore types, traits, and errors for the Axocoatl agentic AI framework948Apache-2.0
inklingsA unified Rust API for various Large Language Model (LLM) providers947GPL-3.0-or-later
weaverWeaver is a powerful web framework for Picodata ecosystem943BSD-2-Clause
seams-rsHexagonal strict-DI seams for time, sleeping, thread spawning, and filesystem I/O943MIT OR Apache-2.0
overseerd-transportWire transport and status-code types for the overseerd daemon framework.943MIT
eventbus-tinyA small, dependency-free crate that provides a multi-producer broadcast-consumer event bus940BSD-2-Clause OR MIT
enact-configUnified configuration management for Enact - secure storage with keychain and encrypted files938MIT
nexo-driver-claudeSpawn the `claude` CLI under nexo-rs, parse stream-json events, and resume sessions across turns. Phase 67.1 of the agent…937MIT OR Apache-2.0
mothershipProcess supervisor with HTTP exposure - wrap, monitor, and expose your fleet936BSD-3-Clause
lioA platform-independent async I/O library with native support for io_uring (Linux), IOCP (Windows), and kqueue (macOS)935MIT
rrqRRQ orchestrator CLI and worker runtime.934Apache-2.0
nexo-lspIn-process Language Server Protocol client for Nexo (rust-analyzer + pylsp + tsserver + gopls).934MIT OR Apache-2.0
pacifica-rsrust implementation of PacificA: Replication in Log-Based Distributed Storage Systems933MIT
svix-webhook-with-cloneSvix webhooks API client with derive Clone added to Webhook struct933MIT
priact-actor-macroThe define_actor! procedural macro for priact933MIT
tarioAsynchronously read and write TAR archives931MIT
crypto-async-rsHigh-performance pure Rust cryptographic library with async streaming support929MIT
nexo-team-storeSQLite-backed registry + audit log for Phase 79.6 multi-agent teams.929MIT OR Apache-2.0
tsoracle-paxos-toolkitReusable OmniPaxos glue: RocksDB storage, lifecycle helpers, test fakes929Apache-2.0
volans-streamStream protocol for volans928MIT
camel-language-jsJavaScript language plugin for camel-language924Apache-2.0
haagenti-streamAdvanced streaming compression utilities for Haagenti923MIT OR Apache-2.0
yamaha-rcpRemote control of Yamaha mixing consoles using TCP/IP networking.922MIT
mountain-mqtt-embassyA no_std compatible, async MQTT v5 client for embassy, using mountain-mqtt922MIT OR Apache-2.0
apcoreSchema-driven module standard for AI-perceivable interfaces921Apache-2.0
compo-platform-loopCross-platform event loop implementation for the Compo declarative and reactive component framework920Apache-2.0
squall-configAgentic configuration920MIT
koda-cliA high-performance AI coding agent for macOS and Linux918MIT
simploxideSimpleX-Chat bot SDK917MIT OR Apache-2.0
spring-axumSpring-like application framework for Axum with macro-based auto discovery, validation, transactions, caching, events, and…917MIT
camel-component-jmsJMS component for rust-camel via Java bridge917Apache-2.0
kafka-backup-coreCore engine for Kafka backup and restore operations with point-in-time recovery914MIT
nexus-exchangeOfficial Rust SDK for the Nexus Exchange API (REST + WebSocket)913MIT OR Apache-2.0