Source: doc.rust-lang.org (std library reference) · crates.io database dump, 2026-07-25 (crates directory)Contact
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All 305,250 crates, alphabetically

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.

kael_diagnosticsPlatform services diagnostics scaffolding for Kael92Apache-2.0Development tools::Debugging kael_documentDocument lifecycle services for Kael92Apache-2.0Data structuresText processing kael_enginesGeneral-purpose workload engines (Unicode text, undo, crash reporting, app data models) for the Kael UI framework67Apache-2.0Text processing kael_gpu_budgetCross-platform GPU memory budget query (Metal / DXGI / Vulkan) for Kael68Apache-2.0Rendering::Graphics APIs kael_http_clientHTTP client library for Kael173Apache-2.0Network programmingWeb programming::HTTP client kael_i18nInternationalization and localization support for the Kael UI framework72Apache-2.0Internationalization (i18n)Localization (L10n) kael_iconsPlatform services icon scaffolding for Kael90Apache-2.0GUIOperating systems kael_media_enginesOptional media/NLE engines (timeline, compositing, export) for the Kael UI framework19Apache-2.0Multimedia kael_media_sysBindings to macOS media handling APIs for Kael110Apache-2.0MultimediaOperating systems::macOS APIs kael_netNetworking and sync primitives for the Kael UI framework65Apache-2.0Network programming kael_notificationsNotification services for Kael84Apache-2.0GUIOperating systems kael_pdfPDF document services for Kael84Apache-2.0MultimediaRendering kael_perfA tool for measuring test performance for Kael91Apache-2.0Development tools::Profiling kael_refineableA macro for creating refinement types for Kael128Apache-2.0Rust patterns kael_releaseRelease and update management for the Kael UI framework113Apache-2.0Development tools kael_render_graphRender-graph: pass/resource DAG, scheduling, and time-varying cache invalidation for Kael36Apache-2.0Rendering::Graphics APIs kael_secretsSecure OS-keychain credential storage for Kael35Apache-2.0AuthenticationOperating systems kael_semantic_versionSemantic versioning library for Kael133Apache-2.0Parser implementations kael_shareShare services for Kael84Apache-2.0Operating systems kael_storagePlatform services storage scaffolding for Kael126Apache-2.0CachingDatabase implementations kael_sum_treeA sum tree data structure, a concurrency-friendly B-tree for Kael131Apache-2.0Data structures kael_uiProfessional shadcn-inspired UI component library for Kael. 100+ accessible components for building beautiful, performant desktop…22Apache-2.0GUIRendering kael_utilA collection of utility structs and functions for Kael205Apache-2.0Development tools kael_util_macrosUtility macros for Kael158Apache-2.0Development tools::Procedural macro helpers kaelixA command line text editor written in Rust2,666MITCommand line utilities kaem-sdkIPC transport SDK for kaem binaries62MIT kaeoKeep an Eye on files and folder, run a command when one changes57MITCommand line utilities kaerchertbd1,969MIT kafCursed and pretty logging with Fn filters5,184Zlib kafcatcat but with kafka5,388MIT OR Apache-2.0 kafeDeserialization using kajit21MIT OR Apache-2.0 kafelSeccomp-bpf policy compiler — Kafel DSL to BPF bytecode196Apache-2.0Operating systems::Linux APIs kaff_ssoSmall-buffer-optimized generic buffer and UTF-8 string type.3,901MIT kaffePytorch, but make it rust :)7,341MIT OR Apache-2.0MathematicsScience kaffeeSmall 2D framework6,143Apache-2.0 kaffixBuild your own microservice1,683MIT kafgrindBenchmarking crate for kafka1,711MIT kafiSuper simple persistent key value store library for Rust.4,740MIT kafkaRust client for Apache Kafka1,046,471MIT OR Apache-2.0API bindings kafka-apiManual implementation of Apache Kafka API in Rust.9,225Apache-2.0 kafka-backup-coreCore engine for Kafka backup and restore operations with point-in-time recovery914MITAsynchronousDatabase interfaces kafka-client-protocolKafka protocol message types generated from Kafka specification241Apache-2.0 OR MIT kafka-client-protocol-coreCore types and traits for Kafka protocol encoding/decoding267Apache-2.0 OR MIT kafka-client-protocol-deriveDerive macros for Kafka protocol message types293Apache-2.0 OR MIT kafka-clientsApache Kafka clients written in plain Rust that focuses on simplicity1,577MITAsynchronous kafka-connectAPI for building tools that scalably and reliably stream data between Apache Kafka and other systems2,833MITAPI bindings kafka-connect-cassandraKafka connector for Cassandra1,678MITAPI bindings kafka-connect-dynamodbKafka connector for dynamodb1,689MITAPI bindings kafka-connect-elasticsearchKafka connector for Elasticsearch1,709MITAPI bindings kafka-connect-fileKafka connector for file streams1,674MITAPI bindings kafka-connect-httpKafka connector for http1,664MITAPI bindings kafka-connect-mysqlKafka connector for MySQL1,704MITAPI bindings kafka-connect-postgresKafka connector for PostgresSQL1,692MITAPI bindings kafka-connect-s3Kafka connector for s31,678MITAPI bindings kafka-httpSimple Rust Kafka HTTP client to allow a rust native way to interact with the restful kafka HTTP proxy767MIT kafka-ioEasily read, write from and interact with Apache Kafka2,875MIT kafka-loggerA simple logger for sending logs to kafka1,159MIT OR Apache-2.0Development tools::Debugging kafka-native-clientA native Rust Kafka client (producer, consumer, admin) with high fidelity to the official Java client22MIT OR Apache-2.0Network programming kafka-offsets-parserParsers for offset message and key on __consumer_offsets topic12,150non-standard kafka-pipefunctional/fluent kafka pipeline utility1,803ISC kafka-protocolImplementation of Kafka wire protocol.7,327,700MIT/Apache-2.0 kafka-proxyTakes in HTTP Posts, and sends them to a Kafka Server.18,313MIT kafka-remapper-coreCore library for Kafka partition remapping proxy46Apache-2.0AsynchronousNetwork programming kafka-replicatorApplication for replication data between kafka clusters.6,782non-standardCommand line utilities kafka-rsNative Rust Kafka client, built upon kafka-protocol-rs and Tokio.13,434MIT/Apache-2.0API bindingsAsynchronous kafka-serdeserialization and deserialization for the Kafka protocol20,306Apache-2.0 OR MIT kafka-sr-serdesEncode/decode data from/to kafka using the Confluent Schema Registry2,387MIT/Apache-2.0EncodingParsing tools kafka-threadpoolAn async rust threadpool for publishing messages to kafka using SSL (mTLS) or PLAINTEXT protocols.16,759MIT kafka-to-worterbuchDump kafka topics into a Wörterbuch8,603MITCachingDatabase implementations kafka-topic-analyzerAn analyzer for getting metrics about the contents of a Apache Kafka topic8,576MITCommand line utilities kafka-totopTUI plotting Kafka message input rates4,003MITCommand line utilities kafka4rsPure‑Rust client for Apache Kafka 4.0+ – drop‑in replacement for librdkafka, powered by Tokio and zero‑copy buffers.578MIT OR Apache-2.0AsynchronousNetwork programming kafka_clientA pure Rust Kafka client library with SASL authentication support271Apache-2.0 OR MITAPI bindingsAsynchronous kafka_json_processor_coreThe core logic for your Kafka processor, part of kafka-json-processor project.3,967GPL-3.0-or-later kafka_schema_reg_serdesEncode/decode data from/to kafka using the Confluent Schema Registry1,268MIT/Apache-2.0EncodingParsing tools kafka_wire_protocolGenerated implementation of Apache Kafka wire protocol2,729Apache-2.0 kafkaesqueKafka implementations in Rust (Unofficial)9,561MIT kafkaesque-macrosKafka implementations in Rust (Unofficial)13,471MIT kafkaliteLightweight Kafka-like Rust client library for Kafkalite33MIT kafkalite-serverBroker-owned file-log Kafka wire protocol server190MITCommand line utilitiesNetwork programming kafkangRust client for Apache Kafka437MIT OR Apache-2.0API bindings kafkaxkafka storage adapter (KafkaPool + EventBus via pure-Rust rskafka; gap-zero 0.3.9 strict stats API tests)15MIT kafkit-clientKafka 4.0+ pure Rust client.207Apache-2.0API bindingsAsynchronous kafkoIn-process log with Kafka-like semantics: topics, partitions, offset-based reads, replay, retention.70MIT OR Apache-2.0AsynchronousData structures kafqApache Kafka CLI: produce, consume, admin (topics, configs, offsets, copy, dump)18MIT kafrukafru is a Python Celery-inspired queuing library for Rust, using cron for scheduling and SurrealDB for storing queues, metrics,…19,671MITAsynchronousDatabase interfaces kafrustA pure Rust Kafka client with no librdkafka or C toolchain dependency.60MIT OR Apache-2.0API bindingsNetwork programming kafrust-protocolKafka wire protocol primitives for kafrust.83MIT OR Apache-2.0API bindingsNetwork programming kagamiA Minecraft network based modding interface1,270MITGame developmentNetwork programming kagami-coreCore types and traits for kagami threat intelligence13MIT kagamijxlOpinionated JPEG XL decoder/encoder library.23,493ISCMultimedia::Images kagayalaunchd made easy — register projects as services, manage them with start/stop/restart/status/logs410MITCommand line utilitiesDevelopment tools kagekage2,566MIT kage-acpACP server for editor integration with Kage20MIT kage-agentAgent loop and orchestration for Kage19MIT kage-aiA lightweight, extensible, autonomous agentic coding agent20MIT kage-cliNon-interactive CLI runner for Kage20MIT kage-coreCore types and shared logic for Kage19MIT kage-engineKage — an open-source, reproducible algorithmic trading engine (placeholder).20Apache-2.0 kage-extLua extension system for Kage21MIT kage-mcpMCP client and extension manager for Kage21MIT kage-providerLLM provider abstraction and implementations for Kage21MIT kage-sandboxSandbox abstraction for secure command execution in Kage19MIT kage-sessionSession persistence for Kage21MIT kage-toolsTool trait and built-in tool implementations for Kage20MIT kage-tuiTerminal UI library for Kage coding agent20MIT kagemekaKagemeka's Rust Package.1,655MIT kagemusha-coreCore types and traits for Tor network privacy analysis13MIT kagentPlaceholder crate for the kagent name reservation.24Apache-2.0 kageroA cross-platform universal and easy to use package manager6,577EUPL-1.2AccessibilityCommand line utilities kagerou-coreCore types and traits for Tor testnet orchestration13MIT kaggleUnofficial rust implementation of the kaggle api7,706Apache-2.0ScienceWeb programming kagiA simple key-value store2,852MITDatabase interfaces kagi-apiKagi.com API bindings (Search, FastGPT, Universal Summarizer, Enrichment)3,377MIT kagi-appCLI application for Kagi secrets manager194MIT kagi-cliA command-line interface for Kagi.com's APIs1,597MIT kagi-cryptoXChaCha20-Poly1305 encryption implementation for Kagi286MIT kagi-domainCore domain types and traits for Kagi secrets manager402MIT kagi-mcpMCP stdio server for kagi-sdk211MITAPI bindingsCommand line utilities kagi-mcp-serverKagi MCP Server for AI assistants36MITCommand line utilities kagi-sdkRust-first Kagi SDK with explicit official-api and session-web surfaces184MITAPI bindingsWeb programming::HTTP client kagi-serverHTTP server for Kagi remote sync251MIT kagi-storeLocal storage and key management for Kagi243MIT kagi-syncRemote sync client and protocol types for Kagi293MIT kagi-vaultEncrypted secrets and environment variable manager for teams — a secure, team-ready dotenv alternative with per-service isolation187MITCommand line utilitiesConfiguration kagiapiRust client library for Kagi Search and Universal Summarizer APIs113MITAPI bindingsWeb programming::HTTP client kagisearchA Rust library that allows you to perform Kagi searches programmatically using chromiumoxide, without consuming additional API…2,505Apache-2.0 kagiyamaOpinionated application monitoring framework14,190MITDevelopment tools::Debugging kagoA crate for custom-width signed and unsigned integers.3,984MIT OR Apache-2.0 kago-macrosA macros for Kago.4,230MIT OR Apache-2.0 kagouKagou Module19,862MIT kaguracomponent-oriented GUI framework72,592MIT OR Apache-2.0GUIWeb programming kaguyaLinux game saves and configurations backup manager for CLI enjoyers.63GPL-3.0-or-later kaguya_rsFunctional Programming tools and ADTs9,376Apache-2.0 kahA small helper for Kattis assignments2,090GPL-3.0-or-later kahanProvides types to perform Kahan summation31,611Apache-2.0Algorithms kahan_pairsGenerate pairs of integers2,570Apache-2.0AlgorithmsData structures kahloOptimized software rendering library.1,431MPL-2.0 kahoA Rust-based library for interacting with Stoat.73MIT kahonA Rust writer for the Kahon binary format.204MITData structuresEncoding kahoota kahoot client1,492 AGPL-3.0-or-later kahunaA basic implementation of wave-function collapse for procedural generation4,141MIT OR Apache-2.0AlgorithmsGame development kaiMy personal prelude and utilities12,829MIT kai-cliKai - todo.txt task scheduler1,574MIT kai-fansubsRust client for fansubs.ru — anime subtitle database42MIT OR Apache-2.0 kai-rsA Rust library for using large language models via KoboldAI1,546LGPL-3.0-onlyAPI bindings kai-toolCLI helpers for AI coding workflows, file bundling, and git worktree management.116AGPL-3.0-onlyCommand line utilitiesDevelopment tools kaibaKaiba domain library - Core types and interfaces for AI persona system334MIT kaiba-cliCLI for Kaiba - AI persona memory management system162MITCommand line utilities kaiba-integration-discordDiscord integration for Kaiba AI persona system115MIT kaiba-serverKaiba API Server - HTTP API and infrastructure adapters115MIT kaichi-cliCommand-line interface for kaichi: CRISPR guide assignment for Perturb-seq18MITCommand line utilitiesScience kaichi-coreCore library for kaichi: per-guide EM mixture models and zero-copy Arrow output for CRISPR guide assignment43MITAlgorithmsScience kaiganRust companion for Kinobi1,840,707MIT kaigeA game engine written in Rust1,427non-standardGame developmentGame engines kaige_codegen#[system] proc macro for the kaige_ecs library1,873MITData structuresGame engines kaige_ecsFork of the Legion ECS library, with some changes to make it more suitable for use in Kaige.1,830MITData structuresGame engines kaige_editorEditor for KaiGE1,468non-standardGame engines kaige_renderer2D and 3D renderer made for KaiGE, but is usable in other cases.1,494non-standardGame developmentGame engines kaiheilakaiheila library1,599Apache-2.0 kaijiHigh-performance CJK fuzzy search and text normalization engine20MIT OR Apache-2.0Internationalization (i18n)Text processing kaijuA simpler and more direct Web UI alternative for Atlassian's Jira website15,379MIT OR Apache-2.0Command line utilitiesDevelopment tools kaiju-compiler-cliCompiler CLI module of modern assembly language toolset7,404MITEmulatorsParser implementations kaiju-compiler-cli-coreCompiler CLI core module of modern assembly language toolset9,388MITEmulatorsParser implementations kaiju-compiler-coreCompiler core module of modern assembly language toolset10,635MITEmulatorsParser implementations kaiju-coreCore module of modern assembly language toolset11,040MITEmulatorsParser implementations kaiju-vm-cliVirtual machine CLI (Keijo) module of modern assembly language toolset6,121MITEmulatorsParser implementations kaiju-vm-coreVirtual machine core module of modern assembly language toolset8,609MITEmulatorsParser implementations kaikei-rsJapanese tax calculation library for sole proprietors and corporations (個人事業主・法人向け税金計算)109MITFinance kailash-plugin-guestGuest SDK for Kailash WASM plugins1,965MIT OR Apache-2.0Development toolsWebAssembly kailash-plugin-macrosProc-macros for Kailash WASM plugin development2,381MIT OR Apache-2.0Development tools::Procedural macro helpers kailua🌴 Type Checker and IDE Support for Lua6,988MIT/Apache-2.0Command line utilitiesDevelopment tools kailua_checkType checker for Kailua5,592MIT/Apache-2.0Development tools kailua_diagDiagnostics and rudimentary localization support for Kailua2,990MIT/Apache-2.0Development tools kailua_envBasic environments for Kailua3,081MIT/Apache-2.0Data structuresDevelopment tools kailua_langsvrLanguage server implementation for Kailua6,955MIT/Apache-2.0Development tools kailua_langsvr_protocolLanguage server protocol types for Kailua4,041MIT/Apache-2.0Development tools kailua_syntaxAST and parser for Kailua5,975MIT/Apache-2.0Development toolsParser implementations kailua_testTest harness for Kailua2,386MIT/Apache-2.0Development tools kailua_typesType system for Kailua5,795MIT/Apache-2.0Development tools kailua_workspaceWorkspace support for Kailua7,146MIT/Apache-2.0Development tools kaioRust-native GPU kernel authoring framework. Write GPU compute kernels in Rust, automatically lower to PTX. Cross-platform…298MIT OR Apache-2.0CompilersHardware support kaio-candleCandle bridge for KAIO — CustomOp bindings for 12 GPU ops (matmul_tc, matmul_tc_bf16, matmul_tc_async, matmul_tc_bf16_async,…52MIT OR Apache-2.0Hardware supportScience kaio-coreKAIO core — PTX IR types and emission. Part of the KAIO GPU kernel authoring framework.408MIT OR Apache-2.0CompilersHardware support kaio-macrosProc macro crate for KAIO — provides #[gpu_kernel] attribute macro.353MIT OR Apache-2.0CompilersDevelopment tools::Procedural macro helpers kaio-opsPre-built GPU operations for KAIO. Matrix multiplication, attention, auto-tuning.221MIT OR Apache-2.0Hardware supportScience kaio-pyPython bindings for KAIO — Rust-native GPU kernel authoring framework. Exposes the kaio-ops public API (tensor-core matmul,…21MIT OR Apache-2.0API bindingsHardware support kaio-runtimeKAIO runtime — CUDA driver API wrapper, kernel launch, and device memory management. Part of the KAIO GPU kernel authoring…356MIT OR Apache-2.0Hardware support kaiokenA Rust-based HTTP load testing tool with real-time terminal UI and DBZ flavor342MIT OR Apache-2.0Command line utilitiesDevelopment tools::Profiling kairCOnstraint Based Reconstruction and Analysis (COBRA) in Rust8,530GPL-2.0-or-laterMathematicsScience kairaA Declarative and Deterministic Command Line Parser1,562AGPL-3.0-only kairo-cliCLI and Desktop application for smart URL routing98Apache-2.0Command line utilities kairo-coreCLI and Desktop application for smart URL routing332Apache-2.0Command line utilities kairo-desktopCLI and Desktop application for smart URL routing96Apache-2.0Command line utilities kairo-treeDisplay a repository like tree2,208GPL-3.0-or-laterDevelopment tools kairo-webRun a http server the current directory1,237GPL-3.0-or-laterDevelopment tools kairodbKairoDB Rust client (placeholder)355PostgreSQL kairoiAnother application-level tracing library1,189MIT kairoi-macrosProcedural macros for kairoi crate477MIT kairosA library on top of chrono to calculate times and dates ergonomically25,467MPL-2.0Date and time