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.

komple-framework-whitelist-moduleContract used for whitelist management for collections in Komple Framework.8,656Apache-2.0 kompostA crate to easen functional programming in rust by facilitating the creating composition of Iterator methods and anonymous…170MIT komsiLibrary for the KOMSI protocol561MIT OR Apache-2.0 komunikiloA chaotic communications simulator.8,937GPL-3.0-or-later komutaReserved package name for the Komuta platform.21MIT komutadevReserved package name for the Komuta platform.25MIT komyoMulti-agent deep research185MIT konDisplay fox image on CLI.3,201non-standard konaAn SQLite clone written in pure Rust2,700MIT kona-cliShared CLI utilities for Kona crates2,147MIT kona-commonCommon traits and system interfaces for developing client programs on top of Fault Proof VMs.7,226MIT kona-common-procProc macro extension for the `kona-common` crate.7,161MIT kona-compCompression types for the OP Stack1,166MIT kona-deriveA no_std derivation pipeline implementation for the OP Stack20,083MIT kona-derive-alloyAn alloy-backed derivation pipeline for the OP Stack, built on `kona-derive`3,138MIT kona-driverA no_std derivation pipeline driver8,235MIT kona-engineAn implementation of the OP Stack engine client1,840MIT kona-executorA no_std stateless block builder for the OP Stack15,048MIT kona-genesisOptimism genesis types12,100MIT kona-hardforksConsensus hardfork types for the OP Stack5,309MIT kona-interopCore functionality and primitives for the Interop feature of the OP Stack.6,595MIT kona-macrosUtility macros for kona crates2,979MITCryptographyCryptography::Cryptocurrencies kona-mptUtilities for interacting with and iterating through a merkle patricia trie12,585MIT kona-netConsensus networking library for the OP Stack1,058MITCryptographyCryptography::Cryptocurrencies kona-nexusKona Networking Component Runner755MITCryptographyCryptography::Cryptocurrencies kona-nodeKona Consensus Node1,477MITCryptographyCryptography::Cryptocurrencies kona-node-serviceAn implementation of the OP Stack consensus node service1,747MIT kona-p2pP2P library for the OP Stack1,841MITCryptographyCryptography::Cryptocurrencies kona-peersNetwork peers library for the OP Stack2,040MITCryptographyCryptography::Cryptocurrencies kona-plasmaPlasma Data Availability Adapter1,289MIT kona-preimageBindings and types for interacting with the PreimageOracle ABI10,037MIT kona-primitivesPrimitive types for kona crates2,602MIT kona-proofOP Stack Proof SDK5,753MIT kona-proof-interopOP Stack Proof SDK with Interop support2,285MIT kona-protocolOptimism protocol-specific types7,515MIT kona-providersProvider traits for Kona1,095MIT kona-providers-alloyAlloy Backed Providers4,088MITCryptographyCryptography::Cryptocurrencies kona-registryA registry of superchain configs10,465MIT kona-rpcOptimism RPC Types and API4,573MIT kona-serdeSerde related helpers for kona5,278MIT kona-sourcesData source types and utilities for the kona-node2,044MIT kona-std-fpvmPlatform specific APIs for interacting with Fault Proof VM kernels.3,533MIT kona-std-fpvm-procProc macro entry point for `kona-std-fpvm` targeted programs.3,246MIT kona-supervisor-rpcKona Supervisor RPC796MITCryptographyCryptography::Cryptocurrencies kona-supervisor-typesTypes used by the OP Stack supervisor1,004MITCryptographyCryptography::Cryptocurrencies konachanan util based on tokio & reqwest to download images from yandere/konachan by tag, date-range and ID.1,633non-standard konachan-wallpaperdownload and set desktop wallpaper from [Konachan.net](https://konachan.net/)1,562Apache-2.0 konarrKonarr12,652Apache-2.0 konarr-cliCLI for Konarr9,926Apache-2.0 konarr-serverKonarr Web Server API based on Rocket9,956Apache-2.0 konbaatoConversions between different Japanese scripts1,377CC0-1.0 kondisa simple library to communicate with exercise equipment1,957non-standard kondokondo is a filesystem cleaning tool that recursively searches directories for known project structures and determines how much…18,586MITCommand line utilities kondo-libShared code lib for kondo and kondo-ui.15,204MIT kondo-uikondo-ui is a filesystem cleaning tool that recursively searches directories for known project structures and allows you to clean…7,753MIT kondrak-alineImplementation of Kondrak's ALINE alignment algorithm2,840MIT konduto-rsUnofficial Rust SDK for Konduto API - Fraud detection and prevention platform194MITAPI bindingsWeb programming::HTTP client konectorSync GitHub SSH keys with your servers.5,324non-standard konektor_dbdb konektor1,286Apache-2.0 konektor_db-sysconnector for a DB1,316Apache-2.0 konfigserializable, schemable configuration for popular crates486MIT OR Apache-2.0 konfig-rustA library providing a simple way to cnteralized config management in your codebase1,423MITConfigurationData structures konfig-rust-deriveA derive macro for the konfig-rust library, allowing shorthand implementation of the KonfigSection trait1,659MITConfigurationDevelopment tools::Procedural macro helpers konfigkollKonfigkoll is a configuration management tool for Arch Linux and Debian (and derivatives)13,911MPL-2.0Command line utilitiesConfiguration konfigkoll_coreCore functionality for Konfigkoll12,285MPL-2.0ConfigurationOperating systems::Unix APIs konfigkoll_hwinfoHardware info provider for Konfigkoll11,596MPL-2.0Operating systems::Unix APIs konfigkoll_scriptScripting language for Konfigkoll (not for direct public use)12,363MPL-2.0Operating systems::Unix APIs konfigkoll_typesType definitions for konfigkoll backend (internal helper crate)12,958MPL-2.0 konfigkoll_utilsKonfigkoll utilities10,057MPL-2.0 konfigurationToml configuration loader with environment variables support.10,833MITConfiguration konfikconfig parser2,042non-standardConfiguration konfik_deriveDerive macro for konfik configuration parser1,352non-standardConfiguration konfyConfigure gui, tui, repl and cli applications575MIT kongplaceholder for a configuration library currently in development1,879MIT OR Apache-2.0 kong-log-serverReceive and collect logs from Kong's HTTP Log plugin.1,812MIT kong_rsPlugin Development Kit for developing Kong plugins in Rust967MIT kong_rs_macrosConvenience macros for kong_rs1,182MIT kong_rs_protosProtobuf bindings for the Kong Plugin Server757MIT koniThe interpreter for the kon programming language.1,498MIT konigA chess engine built to support variants and custom implementations.7,581MITGames konistoA another project watcher for cargo cli.1,527MITCommand line utilities konjA tool to convert between various Japanese scripts1,789MITCommand line utilities konjacA simple utility to create a toml localization file.47Apache-2.0 konjingjingThai Citizen ID validation library29ISCAlgorithms konnoohmachiEfficient spectral smoothing5,288MIT kono-wtA single-binary CLI + TUI for managing Git worktrees and their GitHub pull requests.107MITCommand line utilitiesDevelopment tools konohaA composable hierarchical state machine library.14MITData structuresGame development konomaTerminal file browser built for AI pair-programming — full-screen previews (Markdown, images, PDF, CSV), git suite, and an…573MITCommand line utilitiesFilesystem konpeitoPersonal key-value store CLI5,193MITAuthenticationCommand line utilities konsvariadic tuples275MIT kons-macrosvariadic tuples429MIT konsoleatA tool that activates or creates a Konsole terminal session in a specified working directory242MPL-2.0 konstConst equivalents of std functions, compile-time comparison, and parsing22,911,288ZlibNo standard libraryParsing tools konst_joinThis crate provides macros that make literal concatenation more convenient.35MITNo standard library konst_kernelFoundational const functionality shared between konst and const_panic7,092,624ZlibNo standard library konst_macro_rulesImplementation detail of the konst crate14,800,748Zlib konst_proc_macrosImplementation detail of the `konst` crate3,083,826ZlibNo standard library konst_repeat_nThis crate can repeat the literal N times.16MITNo standard library konst_repeat_n_simpleThis crate can repeat the literal N times without heavy-lifting the entire mountain.17MITNo standard library konstantynovska_rustМій парсер списків для навчальної практики191MIT konsti-barMain crate for demonstrating trusted publishing issue41MIT OR Apache-2.0 konsti-fooHelper crate for demonstrating trusted publishing subdirectory issue71MIT OR Apache-2.0 konstin-dummy-preleases-coresemver test package1,803MIT OR Apache-2.0 konstin-dummy-preleases-sdksemver test package1,515MIT OR Apache-2.0 konstructCombinator library for building hyper based HTTP services1,611MIT konsumer_offsetsA library crate to parse the content of the Kafka `__consumer_offsets` internal topic11,983MIT OR Apache-2.0EncodingNetwork programming kontenaContainer runtime management daemon for macOS17MIT kontexKontex is a full text search index.4,117MIT OR Apache-2.0 kontext-dev-sdkSecure credentials for AI agents.712MITAPI bindingsWeb programming::HTTP client kontext-dev-sdk-coreCore types for the Kontext SDK.803MIT kontina[developing] ultimate solution for data storage1,107MIT kontochronikLong-Term archive for account transactions84AGPL-3.0-or-later kontochronik-cliCommand line interface for kontochronik, the long-term archive for account transactions31AGPL-3.0-or-later kontor-cryptoKontor Proof-of-Retrievability system for decentralized storage2,366MITAlgorithmsCryptography kontor-crypto-coreShared cryptographic primitives for Kontor PoR (prepare_file, encode, Merkle)240MITAlgorithmsCryptography kontrak-sqliteThe package provides an interface to SQLite.4,838Apache-2.0/MITAPI bindingsDatabase interfaces kontrol2coming soon1,609AGPL-3.0-or-later kontroliType checking for the lambda-Pi calculus modulo rewriting7,778GPL-3.0-onlyConcurrencyNo standard library kontrollKontroll connects to Keymapp's API, allowing control of ZSAs keyboard programmaticaly.2,374MIT kontrolluppgiftA library for dealing with Skatteverkets data format for Kontrolluppgift27,767MIT kontrolluppgift_macrosDerive macros for use within the kontrolluppgift crate5,677MIT konvertunit converter without any dependencies1,747MIT konveyor-coreShared types, gRPC protocol, and provider SDK for the Konveyor migration ecosystem812Apache-2.0 kooKoo CLI — deploy from your terminal (the `koo` command).105MITCommand line utilities koohiiAn actor-based asynchronous algorithmic trading framework.196LGPL-3.0-only kooka_lib_messengerCommunication between services by using Nats18,648ISC kookieA secure, local-first, encrypted secret manager for developers40MITCommand line utilitiesCryptography kool_bloom_filterA standard and scalable Bloom filter implementation in Rust with configurable error tolerance and automatic scaling49MITAlgorithmsData structures koopaLibrary for generating/parsing/optimizing Koopa IR.44,190GPL-3.0 koopman-checksumKoopman checksum algorithm implementation. The Koopman checksum provides 1- and 2-bit fault detection for significantly longer…227MIT OR Apache-2.0AlgorithmsNo standard library koperThe koper project4,625MIT kopiKopi is a JDK version management tool5,338Apache-2.0 kopitiamLocal-first Semantic Runtime CLI for Rust projects: real cargo/rust-analyzer/rustdoc facts, rust-analyzer-backed rename and code…0GPL-3.0-onlyCommand line utilitiesDevelopment tools kopitiam-aiPluggable model adapters (local Qwen, Claude, GPT, Gemini) for KOPITIAM's Semantic Runtime.0GPL-3.0-only kopitiam-configThe ~/.kopitiam per-user directory convention shared by every KOPITIAM application.164AGPL-3.0-only kopitiam-coreCore primitives (dtypes, shapes, devices, errors) for the Kopitiam Runtime, KOPITIAM's CPU-first local inference engine.18GPL-3.0-only kopitiam-documentStructural document reconstruction (paragraphs, headings, tables, columns) for KOPITIAM's Document Engine.18GPL-3.0-only kopitiam-indexPure-Rust (redb-backed) embedded persistence for KOPITIAM's .kopitiam project state directory.19GPL-3.0-only kopitiam-knowledgeThe unified semantic graph (SemanticGraph) for KOPITIAM's Semantic Runtime.15GPL-3.0-only kopitiam-loaderKopitiam Runtime: native GGUF and SafeTensors model loaders.0GPL-3.0-only kopitiam-luaA pure-Rust Lua 5.1 interpreter. No C, no bindings, no vendored Lua.154AGPL-3.0-only kopitiam-markdownSemantic Markdown rendering for KOPITIAM's Document Engine.15GPL-3.0-only kopitiam-modelsKOPITIAM model acquisition: curated multi-family model catalog, XDG cache resolution, sha256 verification, and an autofetch-first…15GPL-3.0-only kopitiam-neovimkvim: a Rust-native, Android-capable modal editor with Vim keybindings and plugin behaviour built in — no Lua plugins, no Mason.…121AGPL-3.0-onlyCommand line utilitiesText editors kopitiam-ontologyShared entity/relationship vocabulary (the Common Semantic Model) for KOPITIAM's Semantic Runtime.201GPL-3.0-only kopitiam-pdfPure-Rust PDF text extraction for KOPITIAM's Document Engine.21GPL-3.0-only kopitiam-runtimeKopitiam Runtime: the Qwen transformer forward pass (embedding, RoPE, grouped-query attention, SwiGLU MLP, KV cache, greedy…0GPL-3.0-only kopitiam-semanticRust knowledge providers (cargo metadata, rust-analyzer, rustdoc JSON) and LSP-backed rename/code-action write support for…172GPL-3.0-only kopitiam-snippetPure-Rust LSP-syntax snippet engine (parse, expand, tabstops) for KOPITIAM's editor. Clean-room implementation of the LSP snippet…174AGPL-3.0-only kopitiam-syntaxPure-Rust, line-oriented incremental syntax highlighting for KOPITIAM's editor. No tree-sitter, no C: see docs/ai-decisions for…164AGPL-3.0-only kopitiam-tensorKopitiam Runtime: tensor (work in progress).15GPL-3.0-only kopitiam-tokenizerKopitiam Runtime: tokenizer (work in progress).0GPL-3.0-only kopitiam-workflowContext Builder + Workflow Engine: the only KOPITIAM crate allowed to invoke a model.0GPL-3.0-only kopitiam-workspacePer-project session memory (ProjectState) for KOPITIAM's Semantic Runtime.15GPL-3.0-only kopiumkubernetes openapi unmangler1,310,750Apache-2.0Command line utilitiesParsing tools kopkia simple graphical engine made with wgpu and winit10,348non-standardGraphicsRendering kopperdbFast key-value store1,525MIT OR Apache-2.0 koprsA reusable, ergonomic library that streamlines Kubernetes operator development, allowing developers to build controllers with…258MITAPI bindings koprs-admissionValidating admission webhook server for Kubernetes operators, designed as a companion to koprs.18MITAPI bindingsWeb programming koprs-externalGeneric polling watchers for external sources such as HTTP APIs and object stores, designed as a companion to koprs Kubernetes…18MITAsynchronousWeb programming koption_macrosSome macros that are useful for working with `Option`s.3,399MIT OR Apache-2.0 kopuzA modern, lightweight music player built with Rust and Dioxus.188MIT kopuz-componentsA modern, lightweight music player built with Rust and Dioxus.251MIT kopuz-configA modern, lightweight music player built with Rust and Dioxus.450MIT kopuz-dbA modern, lightweight music player built with Rust and Dioxus.392MIT kopuz-discord-presenceA modern, lightweight music player built with Rust and Dioxus.317MIT kopuz-hooksA modern, lightweight music player built with Rust and Dioxus.291MIT kopuz-i18nA modern, lightweight music player built with Rust and Dioxus.272MIT kopuz-pagesA modern, lightweight music player built with Rust and Dioxus.213MIT kopuz-playerA modern, lightweight music player built with Rust and Dioxus.320MIT kopuz-radioA modern, lightweight music player built with Rust and Dioxus.316MIT kopuz-readerA modern, lightweight music player built with Rust and Dioxus.401MIT kopuz-routeA modern, lightweight music player built with Rust and Dioxus.270MIT kopuz-scrobbleA modern, lightweight music player built with Rust and Dioxus.313MIT kopuz-serverA modern, lightweight music player built with Rust and Dioxus.318MIT kopuz-utilsA modern, lightweight music player built with Rust and Dioxus.366MIT koraKora placeholder748non-standard kora-cdcChange Data Capture with per-shard ring buffers and subscriptions for Kōra196MIT kora-cliCLI for Kora gasless relayer1,824MIT kora-coreCore data structures, shard engine, and memory management for Kōra357MIT kora-deployDeploy Solana programs through a Kora paymaster (no SOL required).47MITCommand line utilitiesCryptography::Cryptocurrencies kora-docJSON document database with secondary indexes and WHERE queries for Kōra198MIT kora-embeddedEmbeddable library mode for Kōra — use as a direct API without a network layer22MIT kora-libCore library for Kora gasless relayer2,978MIT kora-observabilityPer-key stats, hot-key detection, and memory attribution for Kōra250MIT kora-privyA Rust library for Privy signing2,298MIT kora-protocolRESP2/RESP3 protocol parser and serializer for Kōra195MIT kora-pubsubSharded Pub/Sub broker for Kōra194MIT kora-rpcRPC server for Kora gasless relayer905MIT kora-serverTCP/Unix socket server, connection handling, and command dispatch for Kōra137MIT kora-storageTiered storage, WAL, snapshots, and io_uring async I/O for Kōra198MIT kora-turnkeyA Rust library for Turnkey signing1,872MIT kora-vectorHNSW vector index and similarity search for Kōra407MIT koracliCLI binary and server entrypoint for Kōra21MIT korahA CLI utility for natural language queries839MIT OR Apache-2.0 korasi-cliAn AWS client to remotely run code that compiles on certain type of hardware.2,743MITCommand line utilitiesDevelopment tools::Cargo plugins koratConvenience methods for the conversion of rusoto attribute values to concrete types for dynamodb9,310Apache-2.0 korat_deriveDerivables for implementation of converters of structures to and from rusoto attribute maps6,778Apache-2.0 koratomicUniversal Context Substrate24Apache-2.0 koraxRust-native RPC where traits are the schema (not yet released)27MIT OR Apache-2.0