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.

k-anon-hashA simple wrapper around the `sha2` crate for K-Anonymous SHA25610,042AGPL-3.0-only k-bucketKademlia DHT K-bucket implementation as a binary tree1,964MIT OR Apache-2.0 k-cacheinternal cache implementation for rmemstore23,325Apache-2.0Web programming k-combinationsEfficient iterator over k-element combinations of a slice43MIT k-edit-distanceA basic edit distance implementation for korean characters28MIT k-event-systemA very super simple event system, only three functions: subscribe, unsubscribe and publish. (and a singleton, never…442MIT k-lighterK-lighter is a syntax highlighter for K language.6,127MIT k-lockA fast mutex for short critical sections35,907MITAsynchronousConcurrency k-ohnuma-procon-liblibrary for atcoder (under development)26MIT k-snowflakeSimple one-dependency implementation of Twitter`s (X) snowflake in rust4,297MIT k-sqlA fully functional business engine1,786Apache-2.0 k-sql-scriptA fully functional business engine1,770Apache-2.0 k0imy competitive programming template12,248MIT k0mmand3rA library for parsing promptexecution K0mmand3r commands4,051MIT k0saggregate your personal infrastructure7,604MIT k1A cargo runner for Rust-based operating system kernels.180MIT k12Implementation of the KangarooTwelve family of extendable-output functions734,574Apache-2.0 OR MITCryptographyNo standard library k12sumA command line implementation of the KangarooTwelve hash function8,838non-standard k1921vk01t-pacAPI доступа к периферии микроконтроллера НИИЭТ К1921ВК01Т.6,056MIT OR Apache-2.0Embedded developmentHardware support k1921vk035-pacThe peripheral access crate for k1921vk035.3,853MIT OR Apache-2.0Embedded developmentHardware support k2Flat file system library. Work in progress.1,801MIT OR Apache-2.0 k210-halHAL for K210 SoC5,017ISCEmbedded developmentHardware support k210-pacPeripheral access API for K210 SoC10,649ISCEmbedded developmentHardware support k22fDevice support crate for NXP FRDM-K22F1,998MITEmbedded developmentNo standard library k230-kpuRegister-level driver for the Kendryte K230 KPU.498Apache-2.0Embedded developmentHardware support k256secp256k1 elliptic curve library written in pure Rust with support for ECDSA signing/verification/public-key recovery, Taproot…68,020,645Apache-2.0 OR MITCryptographyCryptography::Cryptocurrencies k256-kitk256 kit1,497MIT OR Apache-2.0 k256-sdkOfficial Rust SDK for K256 - the gateway to Solana's liquidity ecosystem26MITAPI bindingsCryptography::Cryptocurrencies k256_flowFlow-Rust-SDK Version of k256 secp256k1 elliptic curve library written in pure Rust with support for ECDSA signing/verification…1,685Apache-2.0 OR MITCryptographyCryptography::Cryptocurrencies k2_treeA space-efficient representation of sparsely populated bit-matrices.19,572MITCompressionData structures k2dbRust rewrite foundation for the k2db policy-enforcing MongoDB library116MIT k2db-api-clientRust HTTP client for the k2db API99MIT k2db-api-contractShared HTTP contract types for the k2db API Rust replatform220MIT k2db-api-serverSingle-binary Rust server for the k2db API27MIT k2hashRust binding for k2hash2,307MIT k2hash-sysLow Level I/F for k2hash2,598MIT k2hash_rustOfficial k2hash Rust Driver922MIT k2iKernel Parameters Interface using HTTP17,611MIT k2on-structsStandardized library of structs for building software.1,503MIT k2rbac-api-clientHTTP client for the standalone k2rbac/auth Rust service25GPL-3.0-or-later k2rbac-api-contractShared domain and HTTP contract types for the standalone k2rbac/auth Rust service190GPL-3.0-or-later k2rbac-api-serverAxum server scaffold for the standalone k2rbac/auth Rust service25GPL-3.0-or-later k2rbac-coreCore normalization and derivation helpers for the standalone k2rbac/auth Rust service85GPL-3.0-or-later k2soDeployment droid5,563MIT k2toolsRust CLI toolkit for working with kraken2 outputs26MIT k2v-clientClient library for the Garage K2V protocol5,585AGPL-3.0 k3-wasm-macrosMacros to be used in Rust K3 apps30,065MIT k3-wasm-sdkRust wrapper around the K3 Wasm SDK37,570MIT k32l3a60-cm0plusPeripheral access API for the Cortex M0+ core on the K32L3A60 microcontroller1,848MIT OR Apache-2.0Hardware supportNo standard library k32l3a60-cm4Peripheral access API for the Cortex M4 core on the K32L3A60 microcontroller1,822MIT OR Apache-2.0Hardware supportNo standard library k3dk3s in docker3,688MIT k3s-node-specTyped source-of-truth for a pleme-io k3s node: one K3sNodeSpec, three backend emitters (nixos-rebuild / kindling-init / kikai),…22MIT k4000AI-assisted feature development and code review MCP servers534MITDevelopment tools k4000-dashDashboard ofr k400074MITDevelopment tools k4a-sysThe Azure K4A API bindgen-ed to Rust.2,123MIT k4a-sys-tempA patched version of k4a-sys that builds on Linux. This will be deprecated when k4a-sys is bumped.5,051MIT k4statusSpace API for K4CG1,536MIT k510-pacPeripheral access API for Canaan K510 SoC generated from unofficial SVD file2,824MIT OR Apache-2.0Embedded developmentHardware support k580-coreKR580VM80 / Intel 8080 CPU core for KR580.46MITEmulators k64Peripheral access API for Kinetis K64 microcontrollers4,363MITEmbedded developmentHardware support k66Peripheral access API for Kinetis K66 microcontrollers2,391MITEmbedded developmentHardware support k7sGreat terminal UI for kubernetes.160Apache-2.0 k8-clientCore Kubernetes metadata traits338,474Apache-2.0API bindingsAsynchronous k8-configRead Kubernetes config305,762Apache-2.0 k8-diffUsed for computing diff between Kubernetes objects293,182Apache-2.0 k8-flv-metadataKubernets metadata objects for fluvio3,535Apache-2.0 k8-metadata-clientTrait for interfacing kubernetes metadata service317,036Apache-2.0 k8-metadata-coreCore kubernetes metadata traits3,070Apache-2.0Encoding k8-obj-appKubernetes app objects21,256Apache-2.0 k8-obj-coreCore Kubernetes API Objects24,791Apache-2.0 k8-obj-metadataCore Kubernetes metadata traits25,010Apache-2.0Encoding k8-obj-storageKubernetes storage objects6,040Apache-2.0 k8-typesKubernetes Object Types553,109Apache-2.0Encoding k8055Rust support for the Vellemann K8055 USB IO Card17,349GPL-2.0 k8055_rsCross platform driver code for the Velleman K8055 kit.1,422BSD-3-ClauseEmbedded development k8056Code to controll the k8056 relay card1,551MIT OR Apache-2.0 k8pA cli tool for inspecting containers in Kubernetes25,329MIT k8sk8s1,817MIT k8s-aresARES: Automatic REcord System - A DNS Operator for Kubernetes3,008non-standard k8s-cert-managerkubernetes cert manager crds1,501Apache-2.0 k8s-cluster-apiKubernetes Cluster API (CAPI) Rust definitions74,056Apache-2.0 k8s-controllerlightweight framework for writing kubernetes controllers239,315Apache-2.0 k8s-crds-arti-controllerKubernetes CRDs for arti-controller1,825MIT k8s-crds-cert-managerKubernetes CRDs for cert-manager25,374Apache-2.0 k8s-crds-ciliumKubernetes CRDs for Cilium11,882Apache-2.0 k8s-crds-cloud-native-pgKubernetes CRDs for cloudnative-pg451Apache-2.0 k8s-crds-cluster-apiKubernetes CRDs for the Cluster API78Apache-2.0 k8s-crds-cluster-api-hetznerKubernetes CRDs for cluster-api-hetzner46Apache-2.0 k8s-crds-gatewayKubernetes CRDs for the Gateway API175Apache-2.0 k8s-crds-gateway-experimentalKubernetes CRDs for the Gateway API (with experimental features)53Apache-2.0 k8s-crds-helm-controllerKubernetes CRDs for helm-controller14,196Apache-2.0 k8s-crds-kamajiKubernetes CRDs for kamaji39Apache-2.0 k8s-crds-kube-virtKubernetes CRDs for KubeVirt348Apache-2.0 k8s-crds-kueueKubernetes CRDs for kueue65Apache-2.0 k8s-crds-longhornKubernetes CRDs for Longhorn v1.6.013,862Apache-2.0 k8s-crds-metallbKubernetes CRDs for MetalLB3,223Apache-2.0 k8s-crds-powerdns-operatorKubernetes CRDs for powerdns-operator315Apache-2.0 k8s-crds-snapshotsKubernetes CRDs for Kubernetes snapshots1,267Apache-2.0 k8s-crds-sshpiperKubernetes CRDs for sshpiper38MIT k8s-crds-system-upgrade-controllerKubernetes CRDs for system-upgrade-controller13,085Apache-2.0 k8s-crds-traefikKubernetes CRDs for Traefik20,304Apache-2.0 k8s-criBindings Kubernetes CRI554,415Apache-2.0API bindings k8s-csiBindings for Kubernetes CSI21,294Apache-2.0API bindings k8s-devicepluginAPI bindings for Kubernetes device plugins.3,222Apache-2.0API bindings k8s-expandA library to expand variables in the style of Kubernetes pod manifests.1,514MIT k8s-gateway-apiRust bindings for the Kubenetes Gateway API105,402Apache-2.0 k8s-gcr-auth-helperA Kubernetes authentication helper to expose per-user credentials as Image Pull Secrets for Google Container Registry13,646Apache-2.0 k8s-insiderA zero-config way to access your kubernetes cluster network4,012GPL-3.0-or-laterCommand line utilities k8s-insider-corePackage containing shared dependencies for k8s-insider crates4,601GPL-3.0-or-later k8s-insider-macrosPackage containing macros used by k8s-insider crates4,487GPL-3.0-or-later k8s-kxset KUBECONFIG environment variable for current shell session3,271MIT OR Apache-2.0Command line utilities k8s-maestroA Kubernetes job orchestrator tool library9,550MIT OR Apache-2.0API bindingsConfiguration k8s-mcpKubernetes MCP Server - Feature complete as kubectl50MIT k8s-metricsK8s Metrics API Resource definitions96,008Apache-2.0 k8s-netinspectA minimal Kubernetes network inspection tool for diagnosing CNI and pod connectivity490MITCommand line utilitiesNetwork programming k8s-openapiBindings for the Kubernetes client API63,079,906Apache-2.0API bindingsWeb programming::HTTP client k8s-openapi-codegen-commonCommon code for the k8s-openapi code generator and k8s-openapi-derive135,080Apache-2.0API bindingsWeb programming::HTTP client k8s-openapi-deriveCustom derives for the Kubernetes client API135,732Apache-2.0API bindingsWeb programming::HTTP client k8s-openapi-extCollection of fluent builder traits for Kubernetes objects105,586Apache-2.0 k8s-operatorA highly-available Kubernetes operator framework using Raft consensus53MIT OR Apache-2.0AsynchronousDevelopment tools k8s-operator-controllerKubernetes controller runtime for k8s-operator framework157MIT OR Apache-2.0Development tools k8s-operator-coreCore traits and types for k8s-operator framework440MIT OR Apache-2.0Development tools k8s-operator-deriveProcedural macros for k8s-operator framework158MIT OR Apache-2.0Development tools k8s-operator-raftRaft consensus implementation for k8s-operator framework158MIT OR Apache-2.0Development tools k8s-operator-storageStorage backends for k8s-operator framework259MIT OR Apache-2.0Development tools k8s-pbBindings for the Kubernetes Client API13,120Apache-2.0API bindingsCaching k8s-resChecks pods resources vs usage metrics in prometheus30MIT k8s-rs-pbBindings from k8s-openapi to rust-protobuf which support application/vnd.kubernetes.protobuf10,728Apache-2.0API bindingsParsing tools k8s-spaA Static Pod Autoscaler (SPA) for K8s, based on Prometheus metrics.3,060Apache-2.0 k8s-syncMinimalistic, synchronous, read-only client for kubernetes cluster API, from a node, through local api server endpoint14,814Apache-2.0 k8s-tplTemplatisation for Kubernetes manifests7,198MIT k8s-traefik-apiBindings for the Kubernetes traefik API11,385Apache-2.0 OR MITAPI bindings k8s_apiserverKubernetes apiserver3,828Apache-2.0API bindings k8s_quantity_parserA simple parser for rust k8s_openapi resource Quantity.5,273MITParser implementationsParsing tools k8sfwdA Kubernetes port-forwarding utility for managing multiple targets4,226EUPL-1.2Command line utilities k8sqlQuery Kubernetes with SQL476BSD-3-ClauseCommand line utilitiesDatabase interfaces k8srck8src is the kubernetes rc scripting language9,487Apache-2.0 k9rust testing library557,153MIT k9-svcParser and renderer for K9 self-validating configuration format25MPL-2.0ConfigurationParser implementations k9iserWrap configs and deployments into self-validating K9 contracts24non-standardCommand line utilitiesDevelopment tools k_boardA keyboard event handler that allows dynamic development30,704GPL-3.0Development tools::FFIEncoding k_means-interactiveAn interactive & specialized version of k-means. Has GUI which allows for convenient stepping through the algorithm.1,471MIT k_nearestK-nearest neighbors search for points with maximal search radius3,659non-standardAlgorithms kaKa benchmarking functions to use for optimization algorithms1,911MIT OR Apache-2.0AlgorithmsMathematics ka-piA JVM Bytecode Manipulation Framework inspired by ASM.3,918MIT ka3005pcli tool to remote control a ka3005p power supply13,048MIT OR Apache-2.0Command line utilities kaa_file_managerCLI file manager. Very simple. By KAA21MIT OR Apache-2.0 kaadivisorsSimple CLI program for finding divisors of huge numbers60MIT OR Apache-2.0 kabbali_rust_modulesrust modules tutorial1,510MIT kabegamiSimple Background Setter7,185MITCommand line utilities kabelkabel91MIT kaboodleA low-configuration peer discovery mechanism for building peer-to-peer and mesh applications, based on the SWIM gossip protocol.8,119BSD-2-Clause-PatentNetwork programming kaboomSimple and Intuitive library for Next-Gen application exiting3,175CC-PDDC kabsch_umeyamaThe Kabsch-Umeyama algorithm is a method for aligning and comparing the similarity between two sets of points. It finds the…2,778Apache-2.0 kabuCLI tool to enhance git worktree and jj workspace with automated setup38MIT OR Apache-2.0Command line utilitiesDevelopment tools kabukiName reservation3,504MIT kabwoy_auth_servicetest module1,525MIT kaca‘咔嚓’,’喀嚓‘ Take a kacha.1,513Apache-2.0 kaccyKaccy Protocol - Complete platform for fractional Bitcoin transactions (meta crate)38Apache-2.0API bindingsCryptography::Cryptocurrencies kaccy-aiAI-powered intelligence for Kaccy Protocol - forecasting, optimization, and insights127Apache-2.0API bindingsAsynchronous kaccy-apiREST API and WebSocket server for Kaccy Protocol - comprehensive backend service128Apache-2.0API bindingsWeb programming::HTTP server kaccy-bitcoinBitcoin integration for Kaccy Protocol - HD wallets, UTXO management, and transaction building212Apache-2.0Cryptography::Cryptocurrencies kaccy-coreCore business logic for Kaccy Protocol - batching, fee optimization, and transaction management213Apache-2.0AlgorithmsCryptography::Cryptocurrencies kaccy-dbDatabase layer for Kaccy Protocol - PostgreSQL, Redis, and distributed caching388Apache-2.0AsynchronousDatabase interfaces kaccy-reputationReputation and scoring system for Kaccy Protocol - trust, fraud detection, and tier management212Apache-2.0AlgorithmsAuthentication kacha‘咔嚓’,’喀嚓‘ Take a kacha.2,216Apache-2.0 kachaka-apiUnofficial Rust API client library for Kachaka Robot1,005MITAPI bindingsScience::Robotics kacheZero-copy, content-addressed build cache for Rust, C/C++ and more. No copies, no wasted disk — just hardlinks locally and S3 for…2,755Apache-2.0CachingDevelopment tools::Build Utils kache-coreCore planner data structures and algorithms for kache.1,518Apache-2.0CachingDevelopment tools::Build Utils kacperhes_cargo_testSample library crate785MIT kacrabA Kafka client for Rust, built from the protocol up.80MIT OR Apache-2.0AsynchronousNetwork programming kacrab-macrosProcedural macros for kacrab.105MIT OR Apache-2.0Development tools kacrab-protocolKafka wire protocol types — generated from upstream message schemas by `kacrab-codegen`.108MIT OR Apache-2.0EncodingNetwork programming kactusStore data in Redis1,731non-standard kactus-gtfs-rtStore data in Redis1,695non-standard kadA generic / futures based implementation of the Kademlia Distributed Hash Table (DHT)15,210MIT / Apache-2.0 kadabraEasily share data between different terminal windows1,708Apache-2.0Command line utilities kadabra-runesMCP server bridging LLM applications with language servers for semantic code navigation32MITDevelopment tools kadarKadar media server. Name reserved; under active development.15MIT OR Apache-2.0 kadcastImplementation of the Kadcast Network Protocol.64,350MPL-2.0Network programming kadeHigh-performance queue pipeline and key-value store869MIT kade-protoProtocol internals for Kade1,303MIT kade-serverServer internals for Kade1,099MIT kademlia-dhtA simple implementation of the Kademlia DHT.8,717MIT OR Apache-2.0AlgorithmsConcurrency kademlia_routing_tableKademlia Routing Table implementation48,559GPL-3.0 kadenaA comprehensive Rust library for interacting with Pact smart contracts and the Kadena blockchain.1,072MITCryptography kadiA General-Purpose Build System1,542Apache-2.0 kadminRust bindings for the Kerberos administration interface (kadm5)11,113MITAPI bindingsAuthentication kadmin-sysFFI bindings for the Kerberos administration interface (kadm5)6,440MITAuthenticationExternal FFI bindings kadmiumA broadcast protocol implementation based on Kadcast.149,107MITAlgorithmsNetwork programming kadu_testA fun game where you guess what number the computer has chosen.1,175MIT OR Apache-2.0 kadx_crateTesting crate1,613MIT OR Apache-2.0 kaedeKaede adalah rust library untuk operasi matematika sederhana.3,420MIT kaelGPU-accelerated native UI framework for Rust — build desktop apps with Metal, DirectX, and Vulkan rendering92Apache-2.0GUIRendering::Graphics APIs kael-macrosMacros for Kael141Apache-2.0Development tools::Procedural macro helpersGUI kael-mediaAudio playback primitives for GPUI117Apache-2.0MultimediaMultimedia::Audio kael_audioAudio playback services for Kael86Apache-2.0Multimedia::Audio kael_cacheGeneral-purpose application cache layer for Kael65Apache-2.0Caching kael_collectionsStandard collection type re-exports for Kael287Apache-2.0Data structures kael_derive_refineableA derive macro for creating refinement types in Rust for Kael158Apache-2.0Development tools::Procedural macro helpersRust patterns