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.
notifica-rust-sdkRust client SDK for the Notifica notification service497MIT
relentlessComposable retry policies for fallible operations and polling.497MIT OR Apache-2.0
parliamentProtocols, traits, and domain logic for graceful governance.496AGPL-3.0-only
oxi-storeShared persistent state for oxi — sessions, settings, auth, model registry496MIT
celers-backend-redisRedis result backend for CeleRS496Apache-2.0
atomr-agents-stt-diarize-sherpaLocal speaker diarization via sherpa-onnx for atomr-agents speech-to-text. Plugs into any backend whose Capabilities::diarization…496Apache-2.0
sakuhiki-rocksdbIndexing overlay for any key-value store495MIT OR Apache-2.0
fws_actorsfastwebsockets clients and servers in actors.494MIT OR Apache-2.0
assay-workflowDurable workflow engine with REST+SSE API on PostgreSQL 18 and SQLite backends. Embeddable library or standalone server (via…494Apache-2.0
better_tokio_selecttokio::select! that can be formatted by rustfmt493MIT OR Apache-2.0
praxis-persistMongoDB persistence layer for AI agent conversations with context management493MIT
oxify-connect-llmLLM provider connectors for OxiFY - OpenAI, Anthropic, Cohere, Ollama support492Apache-2.0
nnrp-transport-ipcIPC transport provider for NNRP using Unix domain sockets or Windows named pipes.492Apache-2.0
atomr-agents-stt-voiceHigher-level voice-session abstraction (Live vs TurnBased) plus VAD and mic→stream pump for atomr-agents speech-to-text.492Apache-2.0
milky-rust-sdkRust implementation of the Milky protocol490MIT OR Apache-2.0
motosan-chat-coreCore types and runtime for the motosan-chat chatbot framework490MIT
ftoolingTool library for the fiddlesticks agent harness framework489MIT
nenjo-toolsTool trait, types, and built-in tool implementations for the Nenjo agent platform489Apache-2.0
endringer-asyncAsync facade for endringer (tokio::task::spawn_blocking).489Apache-2.0
homomorphic_actorsHomomorphic Actors is a look at homomorphic encryption as run inside an actor model system.487Apache-2.0
orchflow-coreTransport-agnostic orchestration engine for managing terminal sessions, panes, and plugins with an event-driven architecture487MIT OR Apache-2.0
rustfs-rioRio is a RustFS component that provides a high-performance, asynchronous I/O framework for building scalable and efficient…487Apache-2.0
neuron-authAuthentication provider traits for neuron487MIT OR Apache-2.0
turul-a2a-clientA2A Protocol v1.0 client library487MIT OR Apache-2.0
rustfs-lockDistributed locking mechanism for RustFS, providing synchronization and coordination across distributed systems.486Apache-2.0
kithara-netStreaming HTTP for audio: retry, timeout, byte ranges.486MIT OR Apache-2.0
forgeai-coreCore types and traits for forgeai-rs485MIT OR Apache-2.0
capnweb-serverProduction-ready server for Cap'n Web RPC protocol with capability management485MIT OR Apache-2.0
revoke-authHigh-performance microservices infrastructure framework built with pure Rust485MIT OR Apache-2.0
dial9Low-overhead async runtime telemetry: event recording, Tokio integration, CPU/memory profiling, and a trace viewer CLI484Apache-2.0
camel-component-opensearchOpenSearch component for rust-camel484Apache-2.0
tower-resilience-fallbackFallback middleware for Tower services483MIT OR Apache-2.0
ollama-oxideA Rust library for integrating with Ollama's native API, providing low-level inference and high-level conveniences.483MIT
nidus-jobsSynchronous and asynchronous job queues with observed job runner support for Nidus.483MIT OR Apache-2.0
revoke-resilienceCircuit breakers, rate limiting, and retry mechanisms for Revoke framework481MIT OR Apache-2.0
rusplayMemory safe, blazing fast Rugplay library written in Rust480MIT
ai-agents-runtimeRuntime agent and builder for AI Agents framework480Apache-2.0
ambiA flexible, multi-backend, customizable AI agent framework, entirely based on Rust.479Apache-2.0
rustigram-botHigh-level bot dispatcher, update listener, and handler framework for rustigram479MIT
shavecliA command line interface for the shave library.478GPL-3.0-or-later
volans-bridgeBridge protocol for volans478MIT
nautilus-blockchainBlockchain and DeFi integration adapter for the Nautilus trading engine478LGPL-3.0-or-later
volans-registryRegistry protocol for volans477MIT
kicad-ipc-rsRust client library for the KiCad IPC API (async-first)477MIT
lockness-executorTODO476Apache-2.0
alopex-chirps-coreCore traits and types for Alopex Chirps cluster coordination476Apache-2.0 OR MIT
ultrafast-mcp-macrosProcedural macros for the ULTRAFAST MCP implementation.475MIT OR Apache-2.0
stratneo-nautilus-liveCore live trading components and machinery for the Nautilus trading engine475LGPL-3.0-or-later
lockness-atomicsTODO475Apache-2.0
turul-a2a-aws-lambdaAWS Lambda adapter for turul-a2a — thin wrapper over the same axum Router475MIT OR Apache-2.0
camel-component-sedaSEDA component for rust-camel (asynchronous in-memory staging)475Apache-2.0
mom-rpcAsync RPC over AMQP, DDS, MQTT, and Redis. Transport-agnostic — switch brokers via feature flags, not code.474MIT OR Apache-2.0
lockness-vecsTODO474Apache-2.0
lockness-bagsTODO474Apache-2.0
rucora-coreCore abstractions and types for the rucora LLM agent framework474MIT
camel-witWIT interface definitions for rust-camel WASM plugins474Apache-2.0
toolkit-zeroA feature-selective Rust utility crate — a modular collection of opt-in utilities spanning encryption, HTTP networking,…473MIT
revoke-mqMessage queue abstractions supporting Redis, Kafka, RabbitMQ, and NATS473MIT OR Apache-2.0
nidus-eventsSynchronous event bus, event subscribers, and observed event dispatch for Nidus.473MIT OR Apache-2.0
polymarket-hftA high-frequency trading system for Polymarket with built-in API clients (Data API, CLOB, CLOB WebSocket, Gamma, RTDS) and CLI471MIT
turul-a2a-authAuth middleware for turul-a2a: Bearer/JWT and API Key471MIT OR Apache-2.0
xio-rsA nonblocking IO dispatcher, FS change notifications, async data processing.471EUPL-1.2 OR MPL-2.0 OR MIT
paigasus-helikon-toolsSandboxed Read/Write/Edit/Bash tools for the Paigasus Helikon AI SDK.471Apache-2.0 OR MIT
atomr-agents-evalEval suites + regression detection + deterministic event-stream replay.470Apache-2.0
harness-rs-cliCommand-line interface for harness-rs — run an agent, sched (recurring jobs), new (scaffold), skills validate/list/lint/export,…470MIT OR Apache-2.0
tower-resilience-executorExecutor delegation layer for Tower services - parallel request processing469MIT OR Apache-2.0
jamjet-irJamJet canonical Intermediate Representation — workflow IR, validation, serialization468Apache-2.0
paigasus-helikon-mcpMCP integration for the Paigasus Helikon AI SDK — rmcp client and server wrappers468Apache-2.0 OR MIT
summer-opentelemetryIntegration of summer-rs framework and open-telemetry467MIT
folk-runtime-pipePipe-based worker runtime for Folk — spawns PHP workers via execve with Unix socketpairs466MIT
codex-helperA Rust-based local helper / proxy for Codex CLI traffic with multi-provider routing, usage-aware switching, filtering, and…466MIT OR Apache-2.0
zelosA distributed tracing system466MIT OR Apache-2.0
coreon-coreCore abstractions for camel-rs: Exchange, Processor, Endpoint, Component, CamelContext.465Apache-2.0
scaloSelf-regulating runtime for hyperscale-grade data-plane services. Config, logging and metrics come pre-wired as singletons you…465Apache-2.0
leash-sdkRust SDK for the Leash platform — unified async client for auth, env, and integrations.465Apache-2.0
starlang-gen-serverGenServer pattern for Starlang464MIT OR Apache-2.0
outbox-coreCore traits and logic for modular transactional outbox pattern in Rust464MIT
harness-rs-sensors-commonShared sensor scaffolding (git, LSP helpers) for harness-rs.464MIT OR Apache-2.0
embedded-rpcno_std async request/response synchronization (Embassy-style)463MIT OR Apache-2.0
skg-toolTool interface and registry for skelegent463MIT OR Apache-2.0
swampdLightweight UDP‑based server embedding the Swamp scripting VM with built‑in key‑value storage462MIT
atomrNative Rust runtime for actor-based concurrent and distributed systems. Umbrella crate — pull in subsystems via feature flags.461Apache-2.0
parsql-migrationsMigration system for parsql - type-safe database migrations460MIT OR Apache-2.0
rusty-genius-stemOrchestrator and event loop for rusty-genius459MIT
smtpdAsynchronous, extensible SMTP server library built on Tokio459MIT OR Apache-2.0
vv-llmRust implementation surface for vv-llm458MIT
v_exchanges_methodsExchange method implementations backing the v_exchanges crate458MIT
rig-mcpModel Context Protocol bridge for rig-compose tool registries. Wraps the official `rmcp` SDK with rig-compose's…458MIT OR Apache-2.0
act_rs_smolAct.rs smol is a minimal smol oriented actor framework.458MIT OR Apache-2.0
blastdnsAsync DNS lookup library for bulk/parallel DNS resolution456GPL-3.0
tanukie🦀 Lightweight, blazing-fast LLM client456Apache-2.0
synchronA real-time folder synchronization tool, inspired by Syncthing.455MIT
omniferenceA multi-protocol inference engine with provider adapters455MIT
resumaResuma — resumable SSR Rust web framework: zero hydration, islands, server actions, Flow (Axum).454MIT OR Apache-2.0
zakura-chainCore Zcash data structures for the Zakura node. Internal crate, published to support cargo install zakura454MIT OR Apache-2.0
freya-devtools-appDevtools App for Freya app454MIT
tasker-clientTasker API client library — transport-agnostic REST and gRPC clients453MIT
vibewindow-aisdkAn open-source Rust library for building AI-powered applications, inspired by the Vercel AI SDK. It provides a robust, type-safe,…453MIT
rustbridge-runtimeTokio async runtime integration for rustbridge452MIT OR Apache-2.0
mocraA distributed, event-driven crawling and data collection framework452MIT OR Apache-2.0
webex-headless-messengerHeadless async Rust bindings for Webex Messaging REST APIs and OAuth integrations.451Apache-2.0
some_global_executorReference thread-per-core executor for the some_executor crate.451MIT OR Apache-2.0
sumup-rsA comprehensive, type-safe Rust client for the SumUp API with full async/await support450MIT
assay-authAuthentication, OIDC (client + provider), passkey, Argon2, JWT, Biscuit capability tokens, session management, and Zanzibar-style…450Apache-2.0
nt-agentdb-clientAgentDB client for Neural Trader - vector database integration and agent memory management449MIT OR Apache-2.0
roam-websocketWebSocket transport for roam — message-framed Link over tungstenite449MIT OR Apache-2.0
beetry-messageInternal beetry crate. For the public API, check the beetry crate.449MIT
hpx-streamsHTTP response streaming support for hpx: JSON/CSV/Protobuf/Arrow449Apache-2.0
synth-aiRust SDK for Synth AI - serverless post-training APIs447MIT
ai-sdk-rsAI SDK for Rust with unified model/provider abstractions445MIT
rusmes-metricsObservability layer for RusMES — Prometheus metrics, OpenTelemetry OTLP tracing, structured logging, health/readiness/liveness…445Apache-2.0
sturgeonRecord async streams with timing, replay deterministically444MIT OR Apache-2.0
oxisqlOxiSQL — Pure-Rust SQL facade: connect to in-memory, embedded, or wire-protocol databases with a single API444Apache-2.0
kmcpKindly MCP - A Rust implementation of the Model Context Protocol with enhanced features443MIT OR Apache-2.0
mayuriAn Asynchronous WebSocket Client Library.443MIT
claude-cli-sdkRust SDK for programmatic interaction with the Claude Code CLI443MIT OR Apache-2.0
outfoxExperimental AI API client library for Rust.442MIT OR Apache-2.0
async-signal-with-infoAsync signal handling442Apache-2.0 OR MIT
aimdb-embassy-adapterEmbassy async runtime adapter for AimDB embedded targets440Apache-2.0
coapumA modern, ergonomic CoAP (Constrained Application Protocol) library for Rust with support for DTLS, observers, and asynchronous…439MIT OR Apache-2.0
mixtape-coreAn agentic AI framework for Rust439MIT
email-messageTyped outbound email message and address model439MIT
kithara-eventsHierarchical event bus for the audio pipeline.438MIT OR Apache-2.0
operation-queueHelpers for synchronizing asynchronous protocol operations.438MPL-2.0
arcly-streamAn open-extensible live-media streaming kernel: lock-free zero-copy frame fan-out, instant-start GOP cache, a pluggable…437MIT
stem-rsA complete Rust library for Tor control protocol — build privacy-focused applications with type-safe, async-first APIs437Apache-2.0
harness-rs-templatesPre-built Blueprint templates (axum_crud, crate_keeper) and convention guides for harness-rs.437MIT OR Apache-2.0
thenodesTheNodes is a modular, plugin-driven P2P node framework for Rust, supporting node-embedded plugins (NEP) and core-as-a-library…436Apache-2.0 OR MIT
axocoatl-mcpMCP (Model Context Protocol) client and server integration for Axocoatl435Apache-2.0
forge-jobsSidekiq-style job queue with embedded SQLite and pluggable Postgres. Per-queue workers + cron + cluster-wide rate-limit budget +…435MIT OR Apache-2.0
lazyllamaA lightweight TUI client for Ollama with markdown support and smart scrolling.434GPL-2.0-or-later
odin-protocolThe world's first standardized AI-to-AI communication infrastructure for Rust - 100% functional with 57K+ msgs/sec throughput433MIT
nautilus-deribitDeribit exchange integration adapter for the Nautilus trading engine433LGPL-3.0-or-later
tonic2axum-buildA code generator that builds a REST/WebSocket reverse proxy (Axum) to gRPC services (Tonic)432MIT OR Apache-2.0
webio_macrosProcedural macros for the WebIO ultra-low-latency framework.432MIT
bytehaulAsync HTTP download library with resume, multi-connection, rate limiting, and checksum verification432MIT
wsforgeCore library for WsForge WebSocket framework430MIT
disposition_input_modelSVG diagram generator input data model.430MIT OR Apache-2.0
livespeech-sdkReal-time speech-to-speech AI conversation SDK429MIT
simploxide-ws-coreSimpleX-Chat raw websocket client429MIT OR Apache-2.0
digdigdig3-cli`dig3` CLI binary on top of digdigdig3-station: watch / persist / replay / matrix / inspect / capture / benchmark.429MIT OR Apache-2.0
reson-agenticAgents are just functions - production-grade LLM agent framework427Apache-2.0
actionqueue-runtimeAsync dispatch loop, embedded API, and runtime configuration for the ActionQueue task queue engine.427Apache-2.0
ai-lib-coreAI-Protocol execution runtime core (protocol, client, pipeline, transport)426MIT OR Apache-2.0
ai-sdk-coreHigh-level APIs for AI SDK - text generation, embeddings, and tool execution426MIT OR Apache-2.0
sansio-executorsansio executor426MIT/Apache-2.0
cinnamonA type-safe Nightscout client for Rust, aiming to simplify the interactions with the confusing Nightscout API.426MIT
vidi-routerThe router for Vidi425MIT
harness-rs-mcp-clientMCP client for harness-rs: expose a remote MCP server's tools as harness tools424MIT OR Apache-2.0
tokitai-coreTokitai core types - Compile-time tool definitions with zero runtime dependencies424MIT OR Apache-2.0
nidus-macrosProc macros for Nidus controllers, routes, modules, providers, guards, pipes, and entrypoints.424MIT OR Apache-2.0
horsiesUnified public API for the horsies task queue and workflow engine424MIT
rss_parserA high-performance, streaming RSS parser for Rust with generic AsyncRead support423MIT
solti-modelSolti SDK domain model.423Apache-2.0
kojin-coreCore traits, types, and worker runtime for the kojin task queue423MIT OR Apache-2.0
fmtstructFormat-agnostic configuration loader supporting no_std, alloc, and std.423MIT
machiA Web3-native AI Agent Framework423MIT OR Apache-2.0
harness-rs-tools-memoryLLM-facing memory tools for harness-rs agents: `remember_this`, `forget_memory`, `list_memories`. Backed by any `Arc<dyn Memory>`…423MIT OR Apache-2.0
crabka-connectConnector-framework SPI (Source/Sink + converters) for Crabka422Apache-2.0
memistaHigh-performance vector search service with SQLite metadata storage and USearch vector indexing422GPL-3.0
hydracache-client-transport-axumAxum route boundary for HydraCache external client traffic.422Apache-2.0
nnrp-wasmWASM primitives for NNRP framing, structured probe metrics, and deterministic transport selection.421Apache-2.0
datum-clusterDatum cluster membership over SWIM gossip421Apache-2.0
velaQuick develop table game server with Vela framework420MIT
swink-agent-adaptersLLM provider adapters for swink-agent420MIT
device-envoy-coreShared traits and data types for device-envoy platform crates419MIT OR Apache-2.0
rabbitmq-workerA generic RabbitMQ worker library with built-in retry and dead-letter queue (DLQ) logic.419Apache-2.0
overseerd-jobs-macrosThe Overseerd job macros (#[jobs], #[job]), built on overseerd-macros-core. Re-exported through the overseerd facade's jobs…419MIT
sntpc-time-embassyEmbassy timestamp generator for sntpc library419MIT OR Apache-2.0
md_apiAn async Rust client implementation of the MediaFire API.418MIT
oats-frameworkUniversal architecture pattern for infinite scale across any domain - Objects • Actions • Traits • Systems418MIT
mqtt-async-embeddedAn async, no_std-compatible MQTT client for embedded systems using Embassy.418MIT OR Apache-2.0
iridium-stompAsync STOMP 1.2 client for Rust418MIT
everruns-geminiGoogle Gemini provider for Everruns agents418MIT
vcs-gitlabAutomate GitLab from Rust: a typed, async wrapper for the GitLab CLI (glab) — merge requests, issues, releases, and pipelines.418MIT
zel_typesShared error types for the Zel RPC framework417MIT OR Apache-2.0
yuan-idA lightweight and high-performance u64 ID generator with customizable step allocation and async persistence.417MIT
claude-poolSlot pool orchestration library for Claude CLI417MIT OR Apache-2.0
caducusBounded MPSC/SPSC channel with expiry416Apache-2.0
everruns-bedrockAWS Bedrock provider for Everruns agents416MIT
seaorm-poolA Rust crate that creates a MySQL connection pool for SeaORM using a TOML configuration file.415MIT
udx-udpUDP sockets with ECN information for the QUIC transport protocol415MIT OR Apache-2.0
nidus-observabilityProduction observability composition layer for Nidus applications.415MIT OR Apache-2.0
universal-bot-coreCore functionality for Universal Bot AI automation framework with AWS Bedrock414MIT
atomr-agents-coding-cli-coreUniform input/output contract and vendor trait for the coding-cli harness: request, result, normalized event schema, concept…414Apache-2.0
fchatChat library for the fiddlesticks agent harness framework414MIT
wontoposWontopos — long-term memory for AI agents. Pure semantic retrieval, identical recall in every language, ~100× lower LLM bill.413MIT OR Apache-2.0
datum-agentEmbeddable Datum job registry and lifecycle supervisor413Apache-2.0
prax-ormA next-generation, type-safe ORM for Rust inspired by Prisma413MIT OR Apache-2.0
pluggableA comprehensive, async plugin system for Rust applications with dependency management and security411MIT OR Apache-2.0
runledger-runtimeAsync worker, scheduler, and reaper runtime for the Runledger job system411MIT
jamjet-stateJamJet durable state — event log, snapshots, SQLite and Postgres backends411Apache-2.0
oversyncA lightweight data sync engine: poll, delta, sink.411Apache-2.0
vcs-giteaAutomate Gitea and Forgejo from Rust: a typed, async wrapper for the tea CLI — pull requests, issues, and releases.411MIT
openraft-multiMulti-Raft adapters for connection sharing across Raft groups410MIT OR Apache-2.0
behest-coreCore types for the behest agent runtime: messages, errors, tool definitions, and sans-IO run state machine410MIT OR Apache-2.0
trusty-agents-commonStable agent-plugin surface (ToolExecutor, AgentPlugin, ToolResult) shared by trusty-agents and external agent crates.410MIT
rust-expectNext-generation Expect-style terminal automation library for Rust409MIT OR Apache-2.0
atomr-infer-runtime-openaiOpenAI Chat Completions provider for atomr-infer — implements ModelRunner against api.openai.com, with cost table, error…409Apache-2.0
argentor-memoryVector store, embeddings, and RAG pipeline for Argentor AI agents409AGPL-3.0-only