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.

judoJudo - TUI for ToDo lists4,312MIT judyRust bindings for Judy http://judy.sourceforge.net6,693Apache-2.0 judy-sysLow-level Judy array FFI binding8,806MITData structuresExternal FFI bindings judy-wrapJudy arrays FFI mid-level binding11,381MITData structuresExternal FFI bindings jufuJujutsu log viewer TUI inspired by keifu158MIT jugarWASM-native universal game engine - entry point843MITGame enginesGraphics jugar-aiAI systems for Jugar using Aprender backend960MIT jugar-aprAprender Package Resource (.apr) model format for AI game behaviors948MITGame enginesParser implementations jugar-audioSpatial audio system for Jugar944MIT jugar-coreCore ECS, Game Loop, and State Management for Jugar game engine1,796MITData structuresGame engines jugar-inputUnified input handling for touch, mouse, and gamepad1,033MIT jugar-physicsPhysics engine wrapper for Jugar using Trueno backend1,030MIT jugar-probarProbar: Rust-native testing framework with pixel coverage, TUI snapshots, and visual regression22,220MIT OR Apache-2.0Development tools::TestingWebAssembly jugar-probar-deriveProc-macro crate for Probar type-safe ECS selectors (Poka-Yoke)1,484MIT OR Apache-2.0Development tools::TestingWebAssembly jugar-procgenProcedural generation: WFC, noise, dungeon generation934MIT jugar-renderRendering system for Jugar with responsive camera939MIT jugar-uiResponsive UI system with anchor-based layout1,030MIT jugar-webWASM browser integration for Jugar game engine - Zero JavaScript computation78MITGame enginesWebAssembly jugar-yamlELI5 YAML-First declarative game creation for children ages 5-1274MITConfigurationGame engines juggernautNeural Network in Rust19,667GPL-3.0AlgorithmsScience juggleAsync task switching for cooperative multitasking in single thread environments with no_std support.3,030MIT OR Apache-2.0AsynchronousEmbedded development jugglerPlatform-agnostic types, validation, and state machines for Wi-Fi, MQTT, LoRa, ESP-NOW, OTA, and provisioning on ESP3274MIT OR Apache-2.0Embedded developmentNo standard library juggling-toolsCore juggling algorithms: state notation, transitions, and graph generation56MIT juglansCompiler and runtime for Juglans Workflow Language214MITCommand line utilitiesDevelopment tools juijui is a ui set based on slint41,772MIT/Apache-2.0GUI jui_filejui_file is a simple file tool12,780MIT/Apache-2.0Data structures juiceMachine Learning Framework for Hackers11,203MIT OR Apache-2.0 juice-cliModern battery status for Linux58MITCommand line utilities juice-traitsMachine Learning Framework Traits1,939MIT OR Apache-2.0 juiceboxA simple, yet advanced programming language1,449GPL-3.0-or-later juicebox-sdk-marshallingMarshalling interface for the Juicebox Protocol1,529MIT juicerssRead-only RSS feed reader5,975BSD-3-ClauseCommand line utilities juicy-mainZig's juicy main functionality in Rust47GPL-3.0Command-line interface juicy-main-macroproc-macro implementation for juicy-main132GPL-3.0 juicy_bencodeA little parser for bencode using the Nom library5,734MIT juiz_appJUIZ utility command-line application package3,837MIT juiz_coreCore library for JUIZ application. This package is not required if you want to build juiz functional module.2,527WTFPL juiz_macroMacro definitions for juiz_sdk crate.3,813MIT juiz_sdkSDK definitions for juiz functional elements crate.5,721WTFPL jujuA library to interact with the Juju system. For an example charm see: https://github.com/cholcombe973/gluster-charm53,895MIT jujubeJujube (an experimental VCS)3,080Apache-2.0Command line utilitiesDevelopment tools jujube-libLibrary for Jujube (an experimental VCS)4,042Apache-2.0 jujutsuYou don't want this crate - you want the `jj-cli` crate16,793Apache-2.0 jujutsu-libThis crate has been replaced by the jj-lib crate. Please upgrade to jj-lib version 0.8+, or specify jujutsu-lib of version…14,423Apache-2.0 juke🤖 A small engine for prototyping projects5,170MIT jukeboxA crate for audio.1,682MIT OR Apache-2.0 jukeboxrhino-first-moduleA simple test package that exports a single string literal2,026MIT julepNative GUI renderer driven by a wire protocol over stdin/stdout69MIT OR Apache-2.0GUIRendering julep-coreCore library and extension SDK for the julep native GUI renderer68MIT OR Apache-2.0GUIRendering julep-icedVendored fork of iced for Toddy UI -- a cross-platform GUI library inspired by Elm89MITGUI julep-iced-beaconVendored fork of iced_beacon for Toddy UI -- A client/server protocol to monitor and supervise iced applications252MITGUI julep-iced-coreVendored fork of iced_core for Toddy UI -- The essential ideas of iced926MITGUI julep-iced-cryoglyphVendored fork of cryoglyph for Toddy UI -- Fast, simple 2D text rendering for wgpu327MIT OR Apache-2.0 OR Zlib julep-iced-debugVendored fork of iced_debug for Toddy UI -- A pluggable API for debugging iced applications481MITGUI julep-iced-devtoolsVendored fork of iced_devtools for Toddy UI -- Attachable developer tools for any iced program133MITGUI julep-iced-futuresVendored fork of iced_futures for Toddy UI -- Commands, subscriptions, and future executors for iced762MITGUI julep-iced-graphicsVendored fork of iced_graphics for Toddy UI -- A bunch of backend-agnostic types that can be leveraged to build a renderer for…629MITGUI julep-iced-highlighterVendored fork of iced_highlighter for Toddy UI -- A syntax highlighter for iced191MITGUI julep-iced-programVendored fork of iced_program for Toddy UI -- The definition of an iced program370MITGUI julep-iced-rendererVendored fork of iced_renderer for Toddy UI -- The official renderer for iced367MITGUI julep-iced-runtimeVendored fork of iced_runtime for Toddy UI -- A renderer-agnostic runtime for iced427MITGUI julep-iced-selectorVendored fork of iced_selector for Toddy UI -- A set of abstractions for selecting data from the widget tree312MITGUI julep-iced-testVendored fork of iced_test for Toddy UI -- A library for testing iced applications in headless mode199MITGUI julep-iced-testerVendored fork of iced_tester for Toddy UI -- A test recorder, editor, and runner for your iced applications135MITGUI julep-iced-tiny-skiaVendored fork of iced_tiny_skia for Toddy UI -- A software renderer for iced on top of tiny-skia253MITGUI julep-iced-wgpuVendored fork of iced_wgpu for Toddy UI -- A renderer for iced on top of wgpu253MITGUI julep-iced-widgetVendored fork of iced_widget for Toddy UI -- The built-in widgets for iced260MITGUI julep-iced-winitVendored fork of iced_winit for Toddy UI -- A runtime for iced on top of winit145MITGUI jules-rsProduction-grade Rust client for the Jules API27MITAPI bindingsAsynchronous juliaIdiomatic and safe Julia bindings for Rust17,773ZlibAPI bindings julia-setJulia set computation and rendering7,344Apache-2.0MathematicsMultimedia::Images julia-sysRaw FFI bindings to the Julia API8,130ZlibExternal FFI bindings julia_set_explorerInteractive visualisation of Julia sets1,859MIT julianConvert between Julian day numbers and Julian & Gregorian calendars25,375MITDate and time julian-cliCommand for converting between Julian day numbers and Julian & Gregorian calendars2,311MITCommand line utilitiesDate and time julian_day_converterProvides Julian Day conversion methods for chrono::NaiveDateTime and direct conversion to and from unix timestamps520,225MITDate and time juliandayJulian day is the continuous count of days since the beginning of the Julian Period. This crate implements a method to convert a…26,706MITDate and time juliaupJulia installer and version multiplexer32,951MITCommand line utilities julid-rsA crate and loadable extension for SQLite that provides Joe's ULIDs.14,380non-standard julienRobotics library with influences from MoveIt and Pinocchio1,515BSD-3-ClauseScience::Robotics julienneRange-preserving Rust text chunkers for retrieval and embedding pipelines40PostgreSQLAlgorithmsText processing julietA safe stream multiplexing protocol11,281Apache-2.0 juliexa very basic future executor81,793MIT OR Apache-2.0 juliusWrapper for Julius6,718 july_armyA fun game where you guess what number the computer has chosen.1,498MIT jumakeJuMake is a command-line tool designed to simplify and accelerate the process of setting up new JUCE projects using CMake.3,742MIT jumbA lightning-fast CLI tool for directory navigation. Create custom shortcuts to instantly jump between frequently used paths,…4,814MITCommand line utilities jumbfA JUMBF (ISO/IEC 19566-5:2023) parser and builder written in pure Rust.156,190MIT OR Apache-2.0Parsing tools jumbleAn MCP server that provides queryable, on-demand project context to LLMs85MITDevelopment tools jumiaPlaceholder1,596ISC jumpNon-local jumps2,674 jump-back-hashJumpBackHash consistent hash algorithm — uniformly distributes keys across buckets with minimal remapping when the bucket count…24MIT OR Apache-2.0AlgorithmsData structures jump-consistent-hashJump Consistent Hash for rust3,357,623Unlicense/MIT jump-dirTraverse directory trees in parallel, using relative entries to minimize allocation and maximize parallelism.740LGPL-3.0-or-laterAPI bindingsAsynchronous jump-kunA simple directory jumper made by rust.34,951MIT jump-kun-macrosA crate for jump-kun. Parses jump-kun config file and creates fucntions.23,742MIT jump-startThe CLI for jump-start: A shortcut to your favorite code4,982MIT jump-to-directoryAn easier way to jump between projects when you live in your terminal20non-standardCommand line utilities jumpchJump Consistent Hashing is a fast, minimal memory, consistent hash algorithm.6,276MIT OR Apache-2.0Algorithms jumpconsistenthashImplementation of Jump consistent hash i.e. 'A Fast, Minimal Memory, Consistent Hash Algorithm' from Google1,649Apache-2.0Algorithms jumpcutJumpCut is a library and CLI for converting Fountain-formatted text files into FDX and HTML formats.4,358MIT jumperJumper is command line utility to store and jump to folders on your system for blazingly fast workflow.5,119MIT jumperless-mcpMCP server for the Jumperless V5 — persistent USB-serial bridge exposing the firmware API to LLMs22MITCommand line utilitiesEmbedded development jumphashA Fast, Minimal Memory, Consistent Hash Algorithm236,557ISCAlgorithmsConcurrency jumpingsumo-rsparrot jumping sumo in rust3,031MIT/Apache-2.0 jumplist_parserA Rust library to parse Windows Jumplist files (automaticDestinations-ms and customDestinations-ms)653MIT OR Apache-2.0Command line utilitiesFilesystem jumplist_winA small crate to create and add custom jumplist in windows apps4,228Apache-2.0 jumpropeSimple, fast rope (fancy string) library built on top of Skiplists88,664ISC OR Apache-2.0 jumprsUnified API for reading directory jumper databases (zoxide, z, autojump, fasd)288MITCommand line utilitiesFilesystem jumpstartUtil for Rust file scaffolding1,769GPL-3.0 jumptagJump to directory using tags as shorthand.5,070MIT OR Apache-2.0 jumptoSimple CLI utility to navigate to directories1,686MIT OR Apache-2.0 jumpyA full-featured replacement jump utilities like Zoxide or `z`3,043Apache-2.0 jumpzippierPure-Rust BCJ2 (Branch/Call/Jump filter v2) decoder, part of the 8z umbrella69Zlib juNajust Nabla3,281non-standard junbitsuZero-touch device provisioning20MIT juncoA tool to do common gnss conversions1,401non-standard junctionlibrary for working with NTFS junctions4,749,799MITAPI bindingsOperating systems::Windows APIs junction-apiCommon API Types for Junction - an xDS dynamically-configurable API load-balancer library.4,380Apache-2.0API bindingsNetwork programming junction-api-gencross-language API generation for Junction2,226Apache-2.0 junction-coreThe core implementation for Junction - an xDS dynamically-configurable API load-balancer library.3,857Apache-2.0API bindingsNetwork programming junction-typeinforeflection for junction API generation4,254Apache-2.0 junction-typeinfo-deriveTypeInfo derive macro4,476Apache-2.0 junction-verbatimDEPRECATED: Use upstream `junction` v1.4.1+ crate instead (verbatim prefix fix merged)241MITAPI bindingsOperating systems::Windows APIs junctorNothing quite yet!1,678MIT OR Apache-2.0 junctureTyped state machine framework for LLM agents - Rust implementation of LangGraph50Apache-2.0AsynchronousDevelopment tools juncture-checkpointCheckpoint persistence for Juncture state machine executions37Apache-2.0AsynchronousDevelopment tools juncture-coreCore types and traits for Juncture state machine framework141Apache-2.0AsynchronousDevelopment tools juncture-deriveProc-macro derive implementation for Juncture State trait83Apache-2.0AsynchronousDevelopment tools juncture-storeCross-thread persistent key-value storage for Juncture (re-exports juncture-core::store)52Apache-2.0AsynchronousDevelopment tools juncture-telemetryLangfuse-compatible observability engine for Juncture AI agents36Apache-2.0AsynchronousDevelopment tools juncture-tracingOpenTelemetry integration and tracing for Juncture applications87Apache-2.0AsynchronousDevelopment tools jundlerThe JavaScript executable bundler for Node.js projects7,916MITCommand line utilitiesDevelopment tools juneergonomic remote actors via actix and canary1,637MIT june-analyticsJune analytics client for Rust9,859MIT june-langa small statically-typed language that runs on wasm1,499MIT jungleA fast, safe Tree Library in rust.4,110Apache-2.0/MIT junglefowlBrutally murdering Rust's type system one proof at a time.2,767LGPL-3.0-or-laterAlgorithmsCompilers junglefowl-macrosMacros for type-level mathematical computation.3,243LGPL-3.0-or-laterAlgorithmsCompilers jungwoo_artA library for artistic concepts.1,027MIT juniorProgramming language transpiling to rust1,660MIT juniperGraphQL server library.3,321,705BSD-2-ClauseAsynchronousWeb programming juniper-composeMerge multiple Juniper object definitions into one4,824MITWeb programming juniper-compose-macrosMacros for juniper-compose crate5,490MIT juniper-eager-loadingEliminate N+1 query bugs when using Juniper38,733MITWeb programming juniper-eager-loading-code-genEliminate N+1 query bugs when using Juniper39,346MITWeb programming juniper-from-schemaGenerate Juniper code from you GraphQL schema76,794MITWeb programming juniper-from-schema-build-geoffseeUse juniper-from-schema from build.rs23MITWeb programming juniper-from-schema-code-genInternal code generation crate for juniper-from-schema57,121MITWeb programming juniper-from-schema-code-gen-geoffseeInternal code generation crate for juniper-from-schema171MITWeb programming juniper-from-schema-geoffseeGenerate Juniper code from you GraphQL schema82MITWeb programming juniper-from-schema-proc-macro-geoffseeInternal code generation crate for juniper-from-schema112MITWeb programming juniper-jetRust client for the Juniper JET gRPC API1,814MITNetwork programming juniper-lazy-loadingReserved for future use1,798MITWeb programming juniper_actix`juniper` GraphQL integration with `actix-web`.132,856BSD-2-ClauseAsynchronousWeb programming juniper_axum`juniper` GraphQL integration with `axum`.596,957BSD-2-ClauseAsynchronousWeb programming juniper_codegenCode generation for `juniper` crate.3,245,087BSD-2-Clause juniper_codegen_puffCode generation for `juniper` crate. Released for Puff.4,158BSD-2-Clause juniper_compose_macros_ngMacros for juniper_compose_ng crate1,053MIT juniper_compose_ngMerge multiple Juniper object definitions into one (Juniper 0.16 compatible fork)889MITWeb programming juniper_graphql_wsGraphQL over WebSocket Protocol implementations for `juniper` crate.923,026BSD-2-ClauseAsynchronousWeb programming juniper_graphql_ws_puffGraphQL over WebSocket Protocol implementation for `juniper` crate. Released for Puff.2,476BSD-2-ClauseAsynchronousWeb programming juniper_hyper`juniper` GraphQL integration with `hyper`.63,453BSD-2-ClauseAsynchronousWeb programming juniper_ironIron integration for juniper46,755BSD-2-Clause juniper_puffGraphQL server library. Release for Puff3,617BSD-2-ClauseAsynchronousWeb programming juniper_relayAdds support for the Relay specification to Juniper.2,934MIT OR Apache-2.0 juniper_relay_connectionRelay style pagination for Juniper.3,606MITWeb programming juniper_relay_helpersHelper macros, structs and functions for working with Relay and Juniper1,899MITWeb programmingWeb programming::HTTP server juniper_relay_helpers_codegenDerive macro crate for juniper_relay_helpers1,836MITWeb programmingWeb programming::HTTP server juniper_rocket`juniper` GraphQL integration with `rocket`.156,131BSD-2-ClauseAsynchronousWeb programming juniper_rocket_multipart_handlerA juniper multipart handler for Rocket web server1,744CC0-1.0Filesystem juniper_serdeSerde support for Juniper types2,928MIT/Apache-2.0 juniper_subscriptionsJuniper `SubscriptionCoordinator` and `SubscriptionConnection` implementations.946,681BSD-2-ClauseAsynchronousWeb programming juniper_subscriptions_puffJuniper `SubscriptionCoordinator` and `SubscriptionConnection` implementations. Released for Puff.3,069BSD-2-ClauseAsynchronousWeb programming juniper_towerJuniper GraphQL integration with tower_web3,471MIT juniper_warp`juniper` GraphQL integration with `warp`.458,078BSD-2-ClauseAsynchronousWeb programming junit-notifyWatch a directory containing junit xml reports, and emit OS notifications upon changes.2,819MIT junit-parserRust library to parse JUnit XML files108,669BSD-2-ClauseDevelopment tools::TestingParser implementations junit-reportCreate JUnit compatible XML reports.6,623,568MIT junit-testConverting cargo test output to junit xml10,217GPL-2.0 junit2jsonA tool convert JUnit XML format to JSON with Rust20,738MITDevelopment tools::Testing junit2mdA simple binary to convert JUnit XML reports to Markdown format5,017GPL-3.0+Development toolsParser implementations junitifyTakes cargo test JSON and transform to JUnit XML79,792MITCommand line utilitiesDevelopment tools junitxml2subunitA tool to convert junitxml files to subunit v26,037GPL-3.0Development tools::Testing junkFilter out OS junk files like .DS_Store and Thumbs.db. A Rust implementation of https://github.com/sindresorhus/junk4,915MIT junk_fileThe library helps you detect commonly generated junk files like `.DS_Store` or `Thumbs.db`.4,282MIT OR Apache-2.0Filesystem junkanooA Rust library for distributed systems and networking with libp2p integration1,340MIT junkboxDeclarative package management that's easy and obvious1,529MIT junkdrawerA crate for all kinds of utilities.216MIT OR Apache-2.0Data structuresRust patterns junkyardCross-platform system trash API.33MIT OR Apache-2.0FilesystemOperating systems junmommA fun game where you guess what number the computer has chosen.1,049MIT junoA helper rust library for the juno microservices framework17,691MIT juno-querierCommom types and queriers1,536Apache-2.0 juno-rust-protoProtobuf stuct defintions for interacting Juno blockchain7,613Apache-2.0CryptographyCryptography::Cryptocurrencies juno-stdStandard library for Juno with CosmWasm support included. This package is a modified copy of the osmosis package -…1,277Apache-2.0 juno-std-deriveProcedural macros for `juno-std`. This package is a modified copy of the osmosis package -…1,502Apache-2.0 juno-tokenfactory-coreThe tokenfactory core middleware for the Juno blockchain.2,735MIT OR Apache-2.0 juno-tokenfactory-typesThe execute msg types for Juno's TokenFactory module.3,277MIT OR Apache-2.0 junobuild-authAuthentication toolkit for Juno.2,018MIT junobuild-cdnCDN logic for serving assets in Juno, backed by a request-based storage process.4,551MIT