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.
interlink-mcpCryptographically-authenticated, cross-machine agent-to-agent chat for Claude Code, over MCP199MIT
cel-contextPortable context snapshots for AI agents. Normalize any stream into reusable elements and point-in-time snapshots.198Apache-2.0
async-local-channelLightweight channels for single-threaded async runtimes.198MIT
rucora-retrievalVector store retrieval for rucora (in-memory, Chroma, Qdrant)198MIT
agent-air-runtimeCore runtime for agent-air - LLM orchestration, tools, and permissions (no TUI dependencies)198MIT
kalshi-fast-rsHigh-performance async Rust client for Kalshi prediction markets API with full WebSocket support198MIT
zubr_state_machineA simple asynchronous state machine library for creating Mealy machines in rust.197non-standard
rucora-providersLLM provider implementations for rucora (OpenAI, Anthropic, Gemini, Ollama, etc.)197MIT
onlyneWorkspace-local IM channel daemon and broker for local agents197MIT
mq-bridge-app-coreShared core library for mq-bridge-app.197MIT
ff-observability-httpFlowFabric consumer-side Prometheus /metrics HTTP endpoint — bridges ff-observability's registry to an axum Router for consumers…196Apache-2.0
rusticx-coreCore traits, types, and abstractions for the Rusticx multi-database ORM196MIT
hexeract-mediatorIn-process mediator implementation for the Hexeract messaging framework196MIT OR Apache-2.0
rakka-inference-coreFoundation crate for rakka-inference — typed errors, deployment value object, ModelRunner trait, batch primitives.196Apache-2.0
tianshuAsync Rust workflow engine — define workflows as trait implementations and run them on a pluggable scheduler196Apache-2.0
runtara-management-sdkSDK for managing runtara instances (start, stop, signals, images)196AGPL-3.0-or-later
oxify-serverHTTP server implementation for OxiFY - Axum, graceful shutdown, middleware (ported from OxiRS)195MIT OR Apache-2.0
command-streamModern shell command execution library with streaming, async iteration, and event support195Unlicense
rigatoni-destinationsDestination implementations for Rigatoni CDC/Data Replication: S3 with multiple formats and compression194Apache-2.0
baseten_performance_client_coreHigh performance HTTP client for Baseten.co and other APIs194MIT
fugle-marketdataRust SDK for Fugle market data — REST and WebSocket clients for Taiwan stock, futures, and options194MIT OR Apache-2.0
paigasus-helikon-evalsEvaluation harness for the Paigasus Helikon AI SDK.194Apache-2.0 OR MIT
agent-framework-azureAzure OpenAI chat client (Entra ID + api-key auth)194MIT
prism3-retryRetry module, providing a feature-complete, type-safe retry management system with support for multiple delay strategies and…193Apache-2.0
armature-pushPush notifications for Armature - Web Push, FCM, and APNS193Apache-2.0
hexeract-busMessage bus primitives for the Hexeract messaging framework193MIT OR Apache-2.0
lunaris-rerankReranker trait + NoopReranker seam for Lunaris193Apache-2.0
outfox-zhipuZhipu AI (GLM) API client for outfox192MIT OR Apache-2.0
uefi-async-macrosA lightweight asynchronous executor for UEFI environments.192MIT OR Apache-2.0
rath-rsProvider-agnostic Rust clients and wire types for agentic AI APIs192MIT OR Apache-2.0
behest-memoryConversationMemory, DemotionHook, Compactor, and ActiveWindow for the behest agent runtime192MIT OR Apache-2.0
praisonaiCore library for PraisonAI - Agent, Tools, Workflows192MIT
firebase-adminAn open-source Firebase Admin SDK for Rust: Authentication and Cloud Messaging192MIT OR Apache-2.0
solti-coreSolti SDK supervisor orchestration.192Apache-2.0
reliakit-retrySmall, runtime-agnostic retry helpers for fallible operations. Sync and async, never sleeps internally, no_std-friendly,…192MIT
dht-crawler高性能的 Rust DHT (Distributed Hash Table) 爬虫库 | A high-performance Rust DHT crawler library for fetching torrent information from…191MIT
muxtlsMultiplexed streams over TLS/TCP191MIT
hitbox-towerHitbox integration for Tower framework190MIT
kochabErgonomic Gemini SDK190Hippocratic-2.1
haagenti-networkCDN-based network streaming for HoloTensor fragments190MIT OR Apache-2.0
wp-connector-utilsShared utilities for WP connector implementations — Arrow IPC encode/decode, WireFormat, NDJSON conversion, and batch metadata…190Apache-2.0
hermes-broker-macrosProcedural macros for Hermes event ergonomics.190MIT OR Apache-2.0
viola!vaporware189MIT OR Apache-2.0
schema-registry-observabilityObservability, metrics, tracing, and monitoring for the Schema Registry189Apache-2.0
ruststream-natsNATS / JetStream broker implementation for the RustStream messaging framework.189Apache-2.0
rudzioAsync testing framework with pluggable runtimes (tokio, compio) and per-test context setup/teardown.189MIT OR Apache-2.0
nestforge-scheduleScheduler support for NestForge189MIT
service-daemon-macroDeclarative macros for the service-daemon orchestration framework.189MIT OR Apache-2.0
tokio-fsmCompile-time generated Tokio async finite state machines with explicit Rust behavior189MIT
pilatusModular, extendable application framework for deterministic simulation of autonomous subsystems188MPL-2.0
gemini-adk-rsAgent runtime for Gemini Live — tools, streaming, agent transfer, middleware188MIT
aidale-providerAI provider implementations for Aidale (OpenAI, Anthropic, etc.)188MIT OR Apache-2.0
aidale-layerBuilt-in layers for Aidale (logging, retry, caching, etc.)188MIT OR Apache-2.0
aidale-pluginBuilt-in plugins for Aidale (tool use, etc.)188MIT OR Apache-2.0
enact-skillsSkills system with TOML manifests for Enact188MIT
llm-edge-monitoringObservability and monitoring for LLM Edge Agent188Apache-2.0
llm-edge-cacheMulti-tier caching system (L1/L2/L3) for LLM Edge Agent188Apache-2.0
llm-edge-routingIntelligent routing engine for LLM Edge Agent188Apache-2.0
llm-edge-proxyCore HTTP proxy functionality for LLM Edge Agent188Apache-2.0
loro-websocket-clientAsync WebSocket client for the Loro protocol188MIT
rfeign-coreCore traits and types for rfeign declarative HTTP client188MIT OR Apache-2.0
agent-framework-bedrockAWS Bedrock (Converse API) chat client for agent-framework-rs188MIT
enact-mcpMCP (Model Context Protocol) client for Enact187MIT
sourcery-macrosDerive macros for the Sourcery library187GPL-3.0-only
axocoatl-llm-geminiGoogle Gemini provider for Axocoatl187Apache-2.0
rig-model-catalogProvider-agnostic model metadata (context window, capabilities, quantization) and probe traits for Rig agents.187MIT OR Apache-2.0
stdiobus-backend-dockerDocker backend for stdio_bus - containerized transport layer187Apache-2.0
paigasus-helikon-runtime-temporalTemporal-backed durable runtime for the Paigasus Helikon AI SDK.187Apache-2.0 OR MIT
forge-orchestrationRust-native orchestration platform for distributed workloads with MoE routing, autoscaling, and Nomad integration187Apache-2.0
plc-comm-hostlink-rustAsync Rust Host Link client based on plc-comm-hostlink-dotnet187MIT
embassy-agbEmbassy async support for Game Boy Advance development with agb186MIT
rbdc-xuguXugu driver implementation for rbatis. The Rust SQL Toolkit and ORM Library. An async, pure Rust SQL crate featuring compile-time…186MIT OR Apache-2.0
rubbo-jsonbRust implementation of Apache Dubbo 3. High-performance RPC framework with Triple protocol.186MIT
axocoatl-sessionDirectory-scoped working sessions for Axocoatl — pick a directory, agents build in it186Apache-2.0
mailrs-smtp-clientOutbound SMTP client: MX resolution, DANE/STARTTLS, response parsing — async, transport-agnostic primitives for RFC 5321 senders.186Apache-2.0 OR MIT
axocoatl-llm-mistralMistral AI provider for Axocoatl (OpenAI-compatible API)186Apache-2.0
tailtriage-tokioTokio runtime sampling and primitive helper integration for tailtriage run artifacts185MIT
log-ioStructured logging pipeline for Rust. Zero-allocation fast path, JSON / logfmt / human-readable outputs, context propagation…185Apache-2.0
atomr-accel-tensorrtTensorRT engine builder + runtime as supervised atomr actors. Wraps libnvinfer / libnvonnxparser at runtime (proprietary library,…185Apache-2.0
quarlus-coreCore runtime for Quarlus web framework - AppBuilder, plugins, guards, and dependency injection185Apache-2.0
cruxx-domainPure domain types for the cruxx agentic DSL — no async, no LLM deps185MIT
embassy-task-watchdogA robust, flexible watchdog management library for embedded systems that multiplexes multiple task watchdogs into a single…185MIT OR Apache-2.0
strede-deriveDerive macros for strede185MIT
llm-sentinel-apiREST API server with health checks, Prometheus metrics, and query endpoints for LLM-Sentinel184Apache-2.0
lane_switchboardsTelecom-inspired OTP actor runtime for Rust: mailbox routing, supervision trees, let-it-crash fault isolation, and distributed…184MIT
crabka-connect-postgresPostgres logical-decoding source connector for Crabka Connect184Apache-2.0
rstmdb-clientClient library for rstmdb - connection pooling, async API184non-standard
agent-framework-anthropicAnthropic (Claude) chat client for agent-framework-rs184MIT
wesichain-ragRust-native LLM agents & chains with resumable ReAct workflows183Apache-2.0 OR MIT
streamweave-errorError handling system for StreamWeave183CC-BY-SA-4.0
spine-protocolLow-latency communication protocols for SPINE183AGPL-3.0-or-later
geode-clientRust client library for Geode graph database with full GQL support183Apache-2.0
rust-tg-botComplete Telegram Bot API framework for Rust, inspired by python-telegram-bot183LGPL-3.0-only
atomr-agentsComposable agentic framework on top of atomr actors and atomr-infer.183Apache-2.0
rayclawMulti-channel agentic AI runtime with tool-calling, memory, and scheduling183MIT
hwhkit-integration-natsHwhKit NATS integration183MIT OR Apache-2.0
llm-sentinel-ingestionKafka ingestion, OTLP parsing, and telemetry validation for LLM-Sentinel182Apache-2.0
llm-sentinel-alertingRabbitMQ and webhook alerting with deduplication for LLM-Sentinel anomaly detection182Apache-2.0
faf-radio-rustRadio Protocol client for FAF — broadcast AI context once, all tools receive. Client SDK for mcpaas.live.182MIT
armature-queueJob queue and background processing for Armature182Apache-2.0
skg-tool-macroProc-macro for deriving ToolDyn from annotated async functions182MIT OR Apache-2.0
behest-approvalHuman-in-the-loop tool approval for the behest agent runtime182MIT OR Apache-2.0
tonic2axumA code generator that builds a REST/WebSocket reverse proxy (Axum) to gRPC services (Tonic)182MIT OR Apache-2.0
reliablyA fully-featured real-time Rust SDK for Ably pubsub182Apache-2.0
oxide_coreRust engine primitives for Oxide (store, snapshot streams, error model, optional persistence).182MIT OR Apache-2.0
sql-orm-queryQuery AST and builder primitives for sql-orm.182MIT
kanshouKanshou (観照) — live process introspection over Unix sockets. Every pleme-io binary exposes its typed AppState; MCP servers and…182MIT
can-transportAsync, cross-platform CAN / CAN-FD transport abstraction with per-subscriber filtering.181MIT OR Apache-2.0
alopex-chirps-gossip-swimSWIM-based gossip protocol implementation for Alopex Chirps181Apache-2.0 OR MIT
pe-coreCore types for Potential Expectations — messages, channels, state, traits181MIT OR Apache-2.0
velociavelocia – production-ready AI agent framework using ADK-Rust, A2A protocol, and AWS DynamoDB181Apache-2.0
volga-oauth-coreShared OAuth 2.1/OIDC foundation types for Volga Web Framework181MIT
behest-toolTool trait, registry, and execution strategies for the behest agent runtime181MIT OR Apache-2.0
tirea-agentos-serverMulti-protocol AI agent server: AG-UI, AI SDK v6, A2A, and NATS from a single binary181MIT OR Apache-2.0
nurtexCreate efficient and lightweight Minecraft bots or clients.181MIT
fluxer-coreRust API library for building Fluxer bots — high-level client, event system, and structures180MIT
hdmi-hal-asyncAsync hardware abstraction traits for the HDMI stack180MPL-2.0
shelly-liveviewCore runtime primitives for Shelly LiveView.180Unlicense OR MIT OR Apache-2.0
rskit-mediaMedia types, codec/format registry, pipeline builder, and processing traits179MIT
recentipAn opinionated async SOME/IP implementation for Rust — boring by design, backed by Tokio.179GPL-3.0-only
zeloxyA library for creating lightweight, async, and lag-free proxy connections.179MIT
zerodds-dcps-asyncRuntime-agnostic async wrappers around the ZeroDDS DCPS sync API (zerodds-async-1.0 spec): write/take Futures, SampleStream,…179Apache-2.0
meld-coreCore domain types, state, and error model for the Meld framework.178MIT
rskit-messagingMessage broker abstractions, registry, middleware, and in-memory adapter178MIT
rucora-mcpMCP (Model Context Protocol) integration for rucora178MIT
sourcery-postgresA Postgres implementation of the Sourcery 'EventStore'178GPL-3.0-only
pipe-itA lightweight, type-safe library for building linear and concurrent processing pipelines in Rust.178MIT
otherone-context上下文管理 — 会话历史加载、Token 估算、上下文压缩178MIT
sql-orm-migrateCode-first migration support for sql-orm.178MIT
kwokka-iocompletion-based I/O driver, buffer pool, and operation types178MIT OR Apache-2.0
paigasus-helikon-runtime-agentcoreAWS Bedrock AgentCore runtime for the Paigasus Helikon AI SDK.178Apache-2.0 OR MIT
otherone-agentAgent 循环驱动 — 核心 Agent 主循环,支持流式和非流式响应177MIT
ferro-blob-storeAsync content-addressed blob-store trait + in-memory and filesystem backends. Foundation crate for ferro-oci-server,…177Apache-2.0
hwhkit-integration-qdrantHwhKit Qdrant integration177MIT OR Apache-2.0
radion-sdkOfficial, async-first, fully-typed Rust SDK for the Radion platform177MIT
entelix-promptentelix prompt primitives — PromptTemplate, ChatPromptTemplate, MessagesPlaceholder, FewShot, ExampleSelector177MIT
kcp-ioA Rust wrapper for the KCP protocol — FFI bindings, safe API, and async tokio integration176MIT
atomr-agents-meetings-harnessMeetings harness: takes a diarized STT conversation and produces structured attendees, notes, and actions with owners. Supports…176Apache-2.0
dasein-agentic-sandboxSandboxed code execution: Process, Docker, Firecracker, Gateway176MIT
secra-cache一个基于 Redis 的统一缓存管理库,专为插件化架构设计,提供强隔离、生命周期管理和极简 API176MIT OR Apache-2.0
mailrs-intelligenceLLM-powered email analysis primitives: structured extraction, importance scoring, spam classification, and embeddings — with a…176Apache-2.0 OR MIT
openheimA fast, multi-provider LLM agent runtime written in Rust176MIT
iron_reliabilityResilience patterns for distributed systems175MIT
wae-databaseWAE Database - 数据库服务抽象层,支持 Turso/PostgreSQL/MySQL175MIT
alopex-chirps-transport-quicQUIC-based transport layer for Alopex Chirps cluster communication175Apache-2.0 OR MIT
work-managerA library for managing asynchronous work tasks.175MIT
dispositionSVG diagram generator175MIT OR Apache-2.0
volga-oauth-clientOAuth 2.1/OIDC client for Volga Web Framework175MIT
tauri-plugin-pg-syncOffline-first PostgreSQL sync plugin for Tauri apps175MIT
stdiobus-backend-nativeNative FFI backend for stdio_bus - direct C library integration175Apache-2.0
hwhkit-integration-mongodbHwhKit MongoDB integration175MIT OR Apache-2.0
entelix-toolsentelix built-in tools — http_fetch, search adapter trait, calculator (web-only subset; no fs / shell — invariant 9)175MIT
kameo_consoleTerminal UI for monitoring a running kameo actor system175MIT OR Apache-2.0
pacta-contractThe isolated core contract for Pacta: durable lifecycle vocabulary and a sans-I/O kernel.174MIT OR Apache-2.0
avila-moleculeNetwork protocol molecules - TCP, UDP, TLS building blocks174MIT OR Apache-2.0
eventshop-messaging-rabbitmqRabbitMQ transport for EventShop messaging.174MIT
rucora-a2aA2A (Agent-to-Agent) protocol integration for rucora174MIT
ormdb-clientAsync Rust client library for ORMDB174MIT
hwhkit-integration-neo4jHwhKit Neo4j integration174MIT OR Apache-2.0
cel-memory-sqliteSQLite-backed local memory for AI agents, implementing cel-memory with FTS and vector search.174Apache-2.0
rx_event_busA simple, agnostic reactive extensions event bus utilising rxRust under the hood.173MIT
lunaris-storage-moonMoon (Redis-compatible) storage backend for the Lunaris agent memory engine173Apache-2.0
alopex-chirps-raft-storageRaft log storage implementation for Alopex Chirps using alopex-core173Apache-2.0 OR MIT
floopA more convenient and less error prone replacement for loop `{ select! { .. }}`173MIT OR Apache-2.0
clockworkerA single-threaded async executor with EEVDF-based fair scheduling and pluggable task schedulers173Apache-2.0
beetry-serializationInternal beetry crate. For the public API, check the beetry crate.173MIT
tokio-system-resolverTokio-compatible async resolver wrapping the system getaddrinfo and getnameinfo calls173Unlicense
agui-rs-protoProtobuf binary encoding for the AG-UI protocol173Apache-2.0
csfloat-rsAn unofficial asynchronous Rust client for the CSFloat API172MIT OR Apache-2.0
bliss-eventsEvent system for EustressEngine value-added tracking integration172MIT OR Apache-2.0
kwokkacompletion-based async runtime with optional orchestration172MIT OR Apache-2.0
rucora-skillsSkills system for rucora (YAML command templates)172MIT
enact-channelsChannel integrations for Enact — Telegram, Teams, and extensible messaging172MIT
typeway-coreCore type-level primitives for the typeway web framework172MIT OR Apache-2.0
ez-rust-discoveryErgonomic service discovery client for Nacos, optimized for gRPC/HTTP workloads.172MIT
daimon-provider-localLocally-hosted model providers (Ollama, llama.cpp, llama-rs, OpenAI-compatible) for the Daimon AI agent framework172MIT OR Apache-2.0
traitclaw-openai-compatOpenAI-compatible provider for TraitClaw (covers OpenAI, Ollama, Groq, Mistral, vLLM, Azure)171MIT OR Apache-2.0
openai-agents-openai-rsOpenAI provider, models, sessions, and hosted tools for openai-agents-rust.171MIT
async-graphql-wasm-deriveMacros for async-graphql-wasm170MIT OR Apache-2.0
xandeum-prpcRust client for Xandeum pNode pRPC APIs170MIT
veda-rsHigh-performance parallel runtime for Rust with work-stealing and adaptive scheduling170MIT OR Apache-2.0
litedbmodelProduction-safe SQL-first Database Access Layer for Rust170MIT
hitbox-feoxdbFeOxDB backend for Hitbox cache with per-key TTL support170MIT
lyoautomatic task distribution170MIT
agentforge-runnerAgent execution engine: parallel workers, trace capture, retry logic (F-03)170MIT
arcp-coreShared protocol primitives for the Agent Runtime Control Protocol (ARCP) — envelopes, messages, errors, IDs, transports, and the…170MIT OR Apache-2.0
axocoatl-serverAxum HTTP/WebSocket API server for Axocoatl170Apache-2.0
jamjet-telemetryJamJet telemetry — tracing, metrics, OpenTelemetry exporters169Apache-2.0
echo_integrationIntegration layer for echo-agent framework (providers, mcp, channels)169MIT
pipeit-deriveDerive macros for pipe-it168MIT
maniac-runtimeHigh-performance async runtime with M:N threading and stackful coroutines168MIT OR Apache-2.0
tokio-immediateAsynchronous glue for your immediate mode UI168Apache-2.0 OR MIT
kojin-redisRedis broker backend for the kojin task queue168MIT OR Apache-2.0
cameoUnified movie/TV show database SDK for Rust168MIT OR Apache-2.0
asupersync-tokio-compatCompatibility bridge for running Tokio-locked crates within the Asupersync async runtime.168LicenseRef-MIT-OpenAI-Anthropic-Rider
echo_stateState management for echo-agent framework (memory, compression, audit)168MIT
quic-reverse-controlControl protocol implementation for quic-reverse167Apache-2.0
quic-reverse-transportTransport abstraction layer for quic-reverse167Apache-2.0
hexeract-bus-rabbitmqRabbitMQ transport backend for the Hexeract messaging framework, powered by lapin167MIT OR Apache-2.0
corgi-macros🦀 Rust based RPC macros167MIT