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.
rust-oxide-realtimeReusable realtime transport primitives for Axum servers and Rust websocket clients37MIT OR Apache-2.0
system-timerasync timers built on SystemTime37MIT OR Apache-2.0
fossic-tauriTauri 2 IPC companion crate for fossic37MIT
openkeyvAsync Key-Value Store - A pluggable interface for KV Stores37Apache-2.0
simulacraA deterministic discrete-event simulation engine for message flow across large computer networks37MIT
tokilakeTokilake - High-performance tunnel and gateway ecosystem37MIT
procmachinesState machines in the procedural style37MIT
vaultmuxUnified async interface for password managers and cloud secret vaults - write once, support pass, Bitwarden, AWS, GCP, Azure37MIT OR Apache-2.0
tw2-jsonrpc-macrosProc macros for tw2-jsonrpc services and named JSON-RPC params.37MIT
ramqp-coreRole-agnostic AMQP 1.0 engine (codec, framing, session/link state machines) shared by the ramqp client and ramqp-broker.37MIT
with_windComposable runtime, logging, scheduling, and storage foundations for vibe-coding Rust projects.37MIT
juncture-checkpointCheckpoint persistence for Juncture state machine executions37Apache-2.0
jmap-metadata-clientJMAP Object Metadata extension client — Metadata/get/changes/set/query/queryChanges method bindings (draft-ietf-jmap-metadata-01)37MIT OR Apache-2.0
tus-axumaxum integration for the tus-protocol TUS resumable upload implementation37MIT OR Apache-2.0
delite-coreThe sqlite of durable agent execution — crash-recoverable AI agents with exactly-once semantics. Zero dependencies.36MIT
async-hybrid-sleepHybrid async sleep combining runtime timers with spin-sleeping for sub-millisecond accuracy36MIT OR Apache-2.0
sombrax-actors-macrosDerive macros (Accessor, Consumer, Producer, MultiConsumer) for the sombrax-actors framework.36MIT OR Apache-2.0
agentdetect-towerTower / axum middleware that reads the agentdetect propagation header and emits OpenTelemetry signals.36MIT
knafehQUIC-based RPC library with Python bindings36Apache-2.0
data-signalsParent crate for the live-data ecosystem: protocol types (live-data), publisher SDK (live-feed), consumer SDK (live-stream).36MPL-2.0
piying_actorsUtility actors for piying36MIT OR Apache-2.0
acceleratorMVP multi-level cache runtime with singleflight load de-duplication36MIT
bask-formatsColumnar formats (Arrow/Parquet/CSV/JSONL) and record IO for bask (use the bask crate)36MIT OR Apache-2.0
cabalHierarchical agent orchestration system - the scheming group36MIT
apalis-libsqlBackground task processing for rust using apalis and libSQL36MIT
turul-llm-openaiOpenAI-compatible adapter for the turul-llm LlmClient trait. Targets /chat/completions with response_format = json_schema.36MIT OR Apache-2.0
bunny-rsA modern, ergonomic RabbitMQ (AMQP 0-9-1) client for Rust36MIT OR Apache-2.0
data-connectorsParent crate for the live-data ecosystem's connector library. Per-exchange source-spec crates for popular live data feeds.36MPL-2.0
kube-portforwardKubernetes port-forward over SPDY/3.1 with kubectl-style WebSocket with raw fallback36GPL-3.0-only
ironflow-orchestratorA lightning-fast, zero-dependency workflow orchestrator written in Rust36Apache-2.0
rust-channelHigh-performance application channel for financial systems36MIT
chenalPerformant channel implementations36MIT OR Apache-2.0
incident-correlationWalks the Kinetic Gain Protocol Suite graph (AEO + agent-cards + tool-cards + decision-cards) starting from an AI Incident Card…36MIT
agentcoreA minimal Rust crate that gives any application agentic capabilities.36MIT
reliability-toolkitAsync reliability primitives for Rust: rate limiter, circuit breaker, retry with jitter, bulkhead. Optional audit-stream-py…36MIT
cognate-llmA modular, extensible LLM framework for Rust with multi-provider support, type-safe tools, and RAG capabilities36MIT OR Apache-2.0
bluetape-rsRust backend primitives for the bluetape ecosystem.36MIT
riak-asyncA Riak client for Rust.36MIT
oxigeo-cloudAdvanced cloud storage backends for OxiGeo - Pure Rust cloud integration36Apache-2.0
ccxt-flux-adaptersExchange adapter implementations for ccxt-flux-rs.36Apache-2.0
meshflow-sdkAsync Rust SDK for the MeshFlow multi-agent orchestration platform36MIT
cruxxAn agentic DSL for Rust — inspectable, serializable, replayable agent execution36MIT
s3zS3 ops, but fearlessly fast!36MIT
juncture-telemetryLangfuse-compatible observability engine for Juncture AI agents36Apache-2.0
esp32s3-cam-asyncAsync LCD-CAM DMA camera driver for ESP32-S3 with optional built-in capture state machine36MIT OR Apache-2.0
opencv-mobile-rsRust bindings for opencv-mobile, a lightweight build of OpenCV optimized for mobile and embedded devices36Apache-2.0
openai-compatAsync Rust client for OpenAI-compatible LLM provider APIs36Apache-2.0
cacophonyA high-performance Discord voice runtime with Opus, UDP/RTP transport, and DAVE support.36AGPL-3.0-only
tus-hook-httpHTTP hook for the TUS protocol36MIT OR Apache-2.0
ukiapiA high-performance Rust web framework inspired by FastAPI35MIT
chronon-backend-sqliteSQLite SchedulerStore adapter for Chronon35MIT
kalam-clientOfficial Rust SDK for KalamDB — SQL, materialized live rows, and optional topic consumers35Apache-2.0
chronon-macrosProc macros for Chronon scheduler (#[chronon::script])35MIT
mnesis-wakeIn-process subscription wake registry (StreamNotifiers) for mnesis-store adapters35MIT OR Apache-2.0
boson-backend-sqliteSQLite QueueBackend adapter for Boson35MIT
tokio-multi-lockDeadlock-safe concurrent lock acquisition35LGPL-3.0-or-later
mixi2Async Rust SDK for the mixi2 Application API.35Apache-2.0
tokio-taskdumpUtilities for task dumps with Tokio35MIT
sruim-crewaiA high-performance multi-agent orchestration engine written in Rust35MIT
ambushTask decomposition and plan mode for AI agents - planning the attack35MIT
langshell-denoDeno-backed LangShell runtime for sandboxed TypeScript execution.35Apache-2.0
polar-bear-rig-onchainrig-onchain-kit agent: Solana balance query → Jupiter swap (dry-run) → SignerContext isolation. Testnet only.35MIT OR Apache-2.0
agent-teamsGeneric Rust agent teams framework replicating Claude Code Agent Teams architecture with pluggable backends for Claude Code,…35MIT
emcyphalAsync Cyphal/CAN network stack for no_std environments35MIT OR Apache-2.0
starlangStarlang - Erlang-style concurrency for Rust35MIT OR Apache-2.0
durable-lambda-closureClosure-native API style for AWS Lambda durable execution workflows35MIT OR Apache-2.0
diesel_crudable_deriveGeneric, backend-agnostic CRUD traits and derive macros for diesel-async35MIT
soma-audit-clientRemote sink for soma-audit: durable local outbox + background relay to a central soma-audit-server.35Apache-2.0
safeioDeterministic async runtime for safety-critical systems35MIT
async-trait-nostdAsync-trait with no_std support35MIT OR Apache-2.0
celerityPure Rust sans-IO ZMTP 3.1 messaging core with Tokio TCP and Unix socket transports.35MIT OR Apache-2.0
systemdaemonSystem daemon building blocks. Designed for but not limited to systemd.35MPL-2.0
stream-rsZero-dependency, spec-compliant streaming toolkit for LLM responses (SSE, incremental JSON, OpenAI/Anthropic delta accumulators).35MIT
sayiir-cloudflareCloudflare Workers WASM bindings for Sayiir workflow engine35MIT
adk-retry-reflectRetry & Reflect plugin for ADK-Rust — intercepts tool failures and injects structured reflection prompts35Apache-2.0
tus-storage-opendalOpenDAL storage backend for TUS resumable uploads35MIT OR Apache-2.0
resuma-flowResuma Flow — full-stack pages, observable execution UI (FlowGraph, EventStream).35MIT OR Apache-2.0
wayFast Async Channel With no-std Support and Alternative Sync API34MIT
openwire-fastwebsocketsfastwebsockets engine adapter for OpenWire WebSocket clients34MIT
openwire-tungstenitetokio-tungstenite engine adapter for OpenWire WebSocket clients34MIT
daowA small, async SQLite data-access layer for Rust with compile-time SQL validation34LGPL-3.0-or-later
boson-backend-postgresPostgreSQL QueueBackend adapter for Boson34MIT
issue-provider-linearLinear issue-tracker driver for issue-provider-core34MIT OR Apache-2.0
qanatLock-free channels specially written for asynchronous contexts34Apache-2.0
agent-worksBatteries-included Agent toolbox built on agent-base — MCP multi-server, Skills, built-in file tools, CLI REPL34MIT
gsocketAsync Tokio client for the Global Socket Relay Network (GSRN)34BSD-2-Clause
pe-llmOpenAI-compatible LLM provider for Potential Expectations34MIT OR Apache-2.0
pe-tasksTask management for Potential Expectations — structured work items, dependency DAG, lifecycle hooks, and agent tools34MIT OR Apache-2.0
pe-macrosProcedural macros for Potential Expectations — derive and attribute macros for agents, tools, and state34MIT OR Apache-2.0
emcyphal-data-typesSTM32 FDCAN driver for Emcyphal network stack34MIT OR Apache-2.0
pe-runtimeAsync runtime for Potential Expectations — execution lifecycle, event bus, streaming, and metrics34MIT OR Apache-2.0
ur-openaiOpenAI provider for ur34MIT OR Apache-2.0
polyfsMinimal, extensible, no_std, no_alloc FAT32 file system driver for SD cards.34GPL-3.0-or-later
veyron-sdkRust SDK for writing Veyron plugins — async IPC client, Plugin trait, and full Veyron wire protocol (framing, zstd compression,…34MIT
torrentdhtDHT discovery with mTLS handshake handoff; optional BitTorrent when the host opts in34MIT OR Apache-2.0
stayputnikAn async client for kRPC, the Remote Procedure Call server for Kerbal Space Program34MIT OR Apache-2.0
oxigeo-kafkaApache Kafka integration for OxiGeo - async producer/consumer with schema registry and transactions34Apache-2.0
oxigeo-etlStreaming ETL framework for continuous geospatial data processing with OxiGeo34Apache-2.0
turmoil-netSimulated socket layer for testing34MIT
ingestixIndustrial-grade micro-framework for building high-throughput, observable data ingestion pipelines with zero boilerplate.34MIT OR Apache-2.0
spectrum-rsRust port of the Spectrum unified messaging SDK34MIT
finitomataFinite state machines with rich lifecycle callbacks, persistence, and supervision34MIT OR Apache-2.0
rabbitmq-backup-coreCore engine for RabbitMQ backup and restore operations34MIT
adaptiteFine-grained reactivity (signals, thunks, memos, effects, events) for the runite runtime34MIT OR Apache-2.0
crimson-crabProduction-grade Rust SDK for Anthropic's Claude API (Messages, streaming, tools, thinking, prompt caching, batches).34MIT OR Apache-2.0
acosmi-sdkAcosmi Rust SDK:模型网关、Agent Run Gateway 与 Compliance 统一客户端。双格式(Anthropic + OpenAI)。端口自 acosmi-sdk-ts。34MIT
sombrax_agentic_coreSombraX Agentic Core (SAC) — a provider-agnostic Rust library for building LLM agents: content-modifying hooks, tool/MCP…34MIT OR Apache-2.0
canton-ledgerAsync Canton Ledger API client (gRPC): commands, streaming, de-duplication, recovery.34Apache-2.0
arcagent-stateDurable state and lineage for long-running agents.34MIT
dbos-serverAdmin HTTP server and control-plane client for DBOS Transact (a Rust port of DBOS Transact)33MIT
kyoto-macrosMacros for kyoto33MIT
foreciteOfficial Rust SDK for the Forecite API — scored news feed (REST), Verdict scoring, and realtime WebSocket streaming.33MIT
cascade-agentAsync LLM agentic engine with tool execution, memory management, and dynamic skills33MIT
messaggeroHigh-performance agent-to-agent communication protocol for Rust. A2A-compatible over HTTP/JSON-RPC with a zero-overhead binary…33MIT OR Apache-2.0
rskit-storage-supabaseSupabase Storage backend for rskit-storage33MIT
rhythm-asyncPlaceholder package - Rhythm workflow orchestration coming soon33MIT
msrt-udpTokio UDP adapters for MSRT.33Apache-2.0
atomr-agents-sandbox-protoWire protocol shared between the sandbox host and the in-VM guest agent: length-prefixed postcard frames over AF_VSOCK, with the…33Apache-2.0
runway-sdkUnofficial async Rust SDK for the Runway API with typed generation requests, uploads, task polling, and workflows.33MIT OR Apache-2.0
auth4freeA modern, secure authentication library for Rust applications with password validation, JWT tokens, bcrypt hashing, session…33MIT
boxkite-clientRust client for a hosted boxkite control-plane (sandboxes, exec, files, audit log, human takeover)33MIT
nanocodexA small, high-performance, headless Rust agents SDK33MIT OR Apache-2.0
canton-adminCanton admin client: party management, user self-inspect, and topology read (gRPC).33Apache-2.0
mongrelA Mongoose-style MongoDB ODM for Rust — schemas, CRUD, hooks, population, aggregation, pagination, and more33MIT
uf-valence-coreValence ports: DatabaseBackend, router, builder, host injectable traits32MIT
gigadex-eventsLow-latency TCP communication protocol with zero-copy serialization for exchange systems32MIT
serverust-eventsSuporte event-driven opt-in para serverust: extractors tipados para Kafka, SQS, EventBridge.32MIT OR Apache-2.0
chronon-axumHTTP API routes for Chronon32MIT
avx-asyncRevolutionary async runtime - Quantum, Neural Networks, Blockchain, Genetic Algorithms, Zero dependencies32MIT OR Apache-2.0
fandhe-backend-httpfandhe-backend の HTTP/1.1 プリミティブ(sans-IO パーサ・レスポンス構築・chunked / query / form / cookie 各パーサ)。32MIT OR Apache-2.0
chrononDeterministic execution kernel with crash-safe replication and exactly-once side effects32MIT OR Apache-2.0
ubl-runtimeUBL runtime: router+middlewares, budgets, ledger logging for Universal Business Ledger.32MIT OR Apache-2.0
cursor-sdkAsync Rust client for Cursor's Cloud Agents API32MIT
herosal-rhai-libRhai scripting library with Redis-based task queue32Apache-2.0
bybit-clientA Rust client library for the Bybit V5 API with REST and WebSocket support32MIT
xiaoyong-channelsCollection of channel primitives for sync and async contexts (both Sync and !Sync)32MIT OR Apache-2.0
emcyphal-stm32-embassySTM32 FDCAN driver adapter for Emcyphal network stack32MIT OR Apache-2.0
emcyphal-stm32-nativeSTM32 FDCAN driver for Emcyphal network stack32MIT OR Apache-2.0
ur-deepseekDeepSeek provider for ur32MIT OR Apache-2.0
rust-s3-async-ffiAsynchronous streaming of AWS S3 objects in C and C++ powered by rust-s332MIT
spine-nostdno_std core primitives for SPINE on embedded/WASM targets32AGPL-3.0-or-later
http-gatewayA small, tree-structured router for building REST APIs.32MIT
llmkit-ollamaOllama (local Llama/Mistral) provider adapter for llmkit-rs32MIT OR Apache-2.0
videosdkVideoSDK Rust SDK for real-time video conferencing32non-standard
relaylyRust SDK for Relayly - self-hosted end-to-end encrypted WebSocket relay32MIT
async-serialLightweight async serial port adapter for async-io + serialport32MIT OR Apache-2.0
open-library-api-rsAsync Rust client for the Open Library API32MIT
ghost-io-apiStrongly-typed, async Rust client for the Ghost CMS Content and Admin APIs32MIT
id_effect_jobsProduction async messaging — Apalis jobs, obix outbox/inbox, Kafka broker32CC-BY-SA-4.0
rust-webxrust-webx — A Rust WebApi framework inspired by ASP.NET Core32MIT
tower-sessions-toasty-storeToasty ORM session store for `tower-sessions`. One store, many backends: SQLite, PostgreSQL, MySQL, Turso.32MIT
claude-sdk-rustAsync Rust SDK for the Claude Code CLI: one-shot queries, streaming, sessions, hooks, and in-process MCP tools. Fork of…32MIT
phoenixrsPhoenix-rs: Laravel-inspired Rust + React web framework by ApiZero (crate name phoenixrs; use phoenix:: in code)32MIT
gameinfoUnified game metadata from IGDB, TheGamesDB and Steam with smart multi-provider matching31MIT
flourish-unsendConvenient and full-featured signals for Rust (thread-local variant).31MIT OR Apache-2.0
cst816s-asyncCST816S touch controller driver for embedded hal async / no_std31MIT OR Apache-2.0
srlion-xutexan extremely fast async mutex with alternative sync API31MIT
boson-backend-natsNATS JetStream KV QueueBackend adapter for Boson Tier 331MIT
boson-backend-scyllaScyllaDB QueueBackend for Boson31MIT
photon-backend-kafkaKafka storage adapter for Photon31MIT
boson-backend-redisRedis QueueBackend adapter for Boson (ZSET ready queue + JSON job bodies)31MIT
pipeline-toolkitA small toolkit for building linear, async processing pipelines out of independently testable steps that communicate through a…31MIT OR Apache-2.0
spine-recursiveRecursive Language Model (RLM) support for infinite context processing31AGPL-3.0-or-later
sqlx-pool-registryLightweight SQLx PostgreSQL connection pool routing for primary/replica separation31MIT OR Apache-2.0
bask-tasksPredefined workers and routers for bask: row-count batching and chunking (use the bask crate)31MIT OR Apache-2.0
hutchCheckpoint and undo system for AI agent sessions - safe burrow to return to31MIT
cineymaA lightweight actor framework for Rust with typed messages, OTP-style supervision, and distributed clustering31MIT
enact-oauthOAuth authentication with device-code flow for Enact31MIT
syncweb-coredelay-tolerant web surfing31MIT
armature-grpcgRPC server and client support for Armature31Apache-2.0
infinite-db-frpA unified facade for the infinite-db frp backend: graph modeling, weaving, signals, runtime, and storage with feature-gated…31MIT OR Apache-2.0
zubr_dspa modular, fully parallelizable DSP pipeline for rust31non-standard
linux-mobile-keyboardAsync, cross-Linux-mobile on-screen keyboard controller (Phosh, Plasma, wvkbd, etc.)31MIT OR Apache-2.0
waterkit-backgroundCross-platform background task scheduling and execution hooks31MIT OR Apache-2.0
ollama-clientAsync and blocking Rust client for the Ollama API31MIT
durable-lambda-traitTrait-based API style for AWS Lambda durable execution workflows31MIT OR Apache-2.0
llmkit-openaiOpenAI (GPT-4o, o1) provider adapter for llmkit-rs31MIT OR Apache-2.0
llmkit-anthropicAnthropic (Claude) Messages API provider adapter for llmkit-rs31MIT OR Apache-2.0
llmkit-towerTower middleware (retry, rate limit, cost tracking, tracing) for llmkit-rs31MIT OR Apache-2.0
id_effect_aiVendor-neutral LLM client traits and streaming for id_effect31CC-BY-SA-4.0
yugendb-sqliteSQLite Rust driver for yugendb key-value and document storage.31MIT
yugendb-redisRedis yugendb driver for key-value storage.31MIT
hotaru_io_embeddedembedded-io-async adapter backend for Hotaru31MIT
oxigeo-kinesisAWS Kinesis streaming integration for OxiGeo - Real-time data streaming31Apache-2.0
greengrass-ipcUnofficial pure-Rust async client for AWS IoT Greengrass v2 on-device component IPC (nucleus IPC over the Unix domain socket).31Apache-2.0 OR MIT
camel-language-minijinjaMiniJinja template rendering language for rust-camel31Apache-2.0
eulogyUserspace async drop for Rust30Apache-2.0
llm-kit-deepseekDeepSeek provider implementation for the LLM Kit - supports chat and reasoning models30MIT
waffo-rsAsync Rust SDK for the Waffo payment platform30MIT
chronon-backend-redisRedis-backed run queue with SQL SchedulerStore for Chronon30MIT
zoey-storage-sqlSQL database adapters (PostgreSQL, SQLite) for ZoeyAI30MIT
quectel-bg9x-atatAsync, no_std atat driver for Quectel BG9x (BG95/BG96) cellular modems30MIT OR Apache-2.0
kalshi-tradingHigh-performance Rust client for the Kalshi prediction market API with HFT-grade orderbook30MIT
chipzen-botBuild, test, and deploy poker bots for the Chipzen AI competition platform30Apache-2.0
mycelium_tfchain_clientA Rust client for interacting with TFChain using dynamic metadata (no compile-time codegen required)30Apache-2.0
rakka-inference-runtime-litellmLiteLLM proxy provider for rakka-inference — implements ModelRunner against the LiteLLM unified API gateway, fronting…30Apache-2.0
atomr-agents-sandbox-toolThe `execute_in_sandbox` Tool: exposes the atomr-agents microVM sandbox harness to agents, with profile resolution, Rust-floor…30Apache-2.0
tool-usefulA powerful, type-safe function calling and tool orchestration framework for Rust AI applications30MIT
ritualistApp activity manager. Schedule app tasks like reminders etc at given intervals.30MIT
spine-cacheTiered caching system for SPINE (L1 in-memory, L2 mmap'd, L3 remote)30AGPL-3.0-or-later