All 305,250 crates, alphabetically

use-smtpSMTP protocol vocabulary primitives for RustUse37MIT OR Apache-2.0Data structuresEmail use-socketSocket endpoint parsing and formatting helpers for RustUse.62MIT OR Apache-2.0 use-solidSolidJS metadata primitives for RustUse83MIT OR Apache-2.0Development toolsWeb programming use-spacingSpacing scale and box-edge primitives for RustUse UI81MIT OR Apache-2.0Data structuresGUI use-spacing-scalePrimitive spacing-scale helpers106MIT OR Apache-2.0AlgorithmsScience use-spatial-referencePrimitive spatial reference vocabulary for RustUse106MIT OR Apache-2.0Data structuresScience use-speciesPrimitive species naming vocabulary for RustUse136MIT OR Apache-2.0Data structuresScience use-species-interactionPrimitive species interaction vocabulary for RustUse106MIT OR Apache-2.0Data structuresScience use-spfSPF record metadata primitives for RustUse53MIT OR Apache-2.0Data structuresEmail use-sphereSphere primitives for the RustUse geometry workspace119MIT OR Apache-2.0MathematicsScience use-splineSpline primitives for the RustUse geometry workspace119MIT OR Apache-2.0MathematicsScience use-sqlFeature-gated facade crate for RustUse SQL primitives63MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-clauseSQL clause label and ordering primitives for RustUse80MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-columnSQL column name, reference, table qualification, and alias primitives for RustUse98MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-constraintSQL constraint kind, name, and schema metadata primitives for RustUse79MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-dialectLightweight SQL dialect and dialect-family labels for RustUse80MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-expressionLightweight SQL expression and predicate primitives for RustUse81MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-identSQL identifier, alias, qualified-name, quoting, and normalization primitives for RustUse168MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-keywordCommon SQL keyword vocabulary primitives for RustUse78MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-operatorCommon SQL comparison, logical, null, and pattern operator primitives for RustUse99MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-paramSQL parameter placeholder style, index, and name primitives for RustUse98MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-querySQL query kind, intent, safety, and classification primitives for RustUse79MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-schemaSQL schema, database, namespace, and search-path primitives for RustUse128MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-tableSQL table name, reference, schema, and alias primitives for RustUse114MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-typeCommon SQL type-name and type-modifier primitives for RustUse80MIT OR Apache-2.0Data structuresDatabase interfaces use-sql-valueSimple SQL literal and value primitives for RustUse99MIT OR Apache-2.0Data structuresDatabase interfaces use-stabilitySimple stability-oriented helpers for control systems106MIT OR Apache-2.0AlgorithmsScience use-stable-idDeterministic stable identifier primitives for RustUse109MIT OR Apache-2.0Data structuresEncoding use-standard-deviationPopulation and sample standard deviation helpers over f64 slices.108MIT OR Apache-2.0 use-starPrimitive star vocabulary for RustUse104MIT OR Apache-2.0Data structuresScience use-state-stepState transition helpers for primitive simulations106MIT OR Apache-2.0AlgorithmsScience use-staticsSmall statics helpers for RustUse106MIT OR Apache-2.0MathematicsScience use-statisticsUtility-first statistics scaffolding for RustUse244MIT OR Apache-2.0MathematicsScience use-statsComposable statistical primitives for RustUse.80MIT OR Apache-2.0MathematicsScience use-statusSmall HTTP status utilities for RustUse65MIT OR Apache-2.0Parsing toolsWeb programming use-stderrSynchronous stderr primitives for RustUse CLI-adjacent code103MIT OR Apache-2.0Command-line interfaceRust patterns use-stdinSynchronous stdin primitives for RustUse CLI-adjacent code103MIT OR Apache-2.0Command-line interfaceRust patterns use-stdoutSynchronous stdout primitives for RustUse CLI-adjacent code103MIT OR Apache-2.0Command-line interfaceRust patterns use-stoichiometryStoichiometry primitives for RustUse47MIT OR Apache-2.0Data structuresScience use-storybookStorybook primitive metadata for RustUse83MIT OR Apache-2.0Development toolsWeb programming use-strainPrimitive engineering strain helpers110MIT OR Apache-2.0AlgorithmsScience use-stratumPrimitive stratum vocabulary for RustUse105MIT OR Apache-2.0Data structuresScience use-stressPrimitive stress and pressure-like helpers109MIT OR Apache-2.0AlgorithmsScience use-surfaceSurface primitives for the RustUse geometry workspace119MIT OR Apache-2.0MathematicsScience use-svelteSvelte and SvelteKit metadata primitives for RustUse84MIT OR Apache-2.0Development toolsWeb programming use-svgPractical SVG utility primitives107MIT OR Apache-2.0Multimedia::ImagesParser implementations use-system-responseSimple first-order system response helpers105MIT OR Apache-2.0AlgorithmsScience use-tarTar entry labels and typeflag mappings for RustUse81MIT OR Apache-2.0CompressionDevelopment tools use-taxonomyPrimitive biological classification vocabulary for RustUse137MIT OR Apache-2.0Data structuresScience use-tcpTCP endpoint parsing and common TCP service helpers for RustUse.62MIT OR Apache-2.0 use-tectonic-platePrimitive tectonic plate vocabulary for RustUse105MIT OR Apache-2.0Data structuresScience use-tempoTempo metadata primitives for RustUse.86MIT OR Apache-2.0Data structuresNo standard library::No dynamic allocation use-terminalTerminal capability primitives for RustUse CLI-adjacent code103MIT OR Apache-2.0Command-line interfaceRust patterns use-tessellationTessellation primitives for the RustUse geometry workspace118MIT OR Apache-2.0MathematicsScience use-testPrimitive testing vocabulary facade for RustUse.63MIT OR Apache-2.0Data structuresDevelopment tools use-test-assertionPrimitive assertion metadata for RustUse testing vocabulary.79MIT OR Apache-2.0Data structuresDevelopment tools use-test-caseNamed test case metadata for RustUse testing vocabulary.79MIT OR Apache-2.0Data structuresDevelopment tools use-test-expectationExpected-vs-actual primitives for RustUse testing vocabulary.78MIT OR Apache-2.0Data structuresDevelopment tools use-test-fixtureFixture metadata and scope vocabulary for RustUse testing primitives.78MIT OR Apache-2.0Data structuresDevelopment tools use-test-outcomeStable test outcome vocabulary for RustUse testing primitives.78MIT OR Apache-2.0Data structuresDevelopment tools use-test-reportLightweight report summary primitives for RustUse testing vocabulary.80MIT OR Apache-2.0Data structuresDevelopment tools use-test-snapshotSnapshot identity and status primitives for RustUse testing vocabulary.81MIT OR Apache-2.0Data structuresDevelopment tools use-test-statusLifecycle status vocabulary for RustUse testing primitives.79MIT OR Apache-2.0Data structuresDevelopment tools use-test-suiteGrouped test suite metadata for RustUse testing vocabulary.78MIT OR Apache-2.0Data structuresDevelopment tools use-textComposable text primitives for RustUse.99MIT OR Apache-2.0Text processing use-text-blockPrimitive text-block estimation helpers108MIT OR Apache-2.0AlgorithmsScience use-text-lineComposable line-level text primitives for RustUse.104MIT OR Apache-2.0Text processing use-themeTheme identity and mode primitives for RustUse UI79MIT OR Apache-2.0Data structuresGUI use-thermal-expansionPrimitive thermal-expansion helpers111MIT OR Apache-2.0AlgorithmsScience use-thermodynamicsIdeal gas and heat-energy helpers for RustUse133MIT OR Apache-2.0MathematicsScience use-thread-idPrimitive thread identity label vocabulary for RustUse104MIT OR Apache-2.0Data structuresOperating systems use-thread-namePrimitive thread name and count vocabulary for RustUse104MIT OR Apache-2.0Data structuresOperating systems use-threatThreat modeling and threat-category primitives for RustUse41MIT OR Apache-2.0Data structuresDevelopment tools use-tickPrimitive tick, trade, and quote vocabulary for RustUse quantitative crates125MIT OR Apache-2.0AlgorithmsFinance use-timeComposable primitive time utilities for Rust.83MIT OR Apache-2.0Date and time use-time-zone-idSmall IANA time zone identifier syntax primitives for RustUse127MIT OR Apache-2.0Date and timeParser implementations use-timeseries-storeTime-series store modeling primitives for RustUse80MIT OR Apache-2.0Data structuresDatabase interfaces use-timezoneSmall time zone and fixed offset primitives for RustUse104MIT OR Apache-2.0Date and timeParser implementations use-tissuePrimitive tissue vocabulary for RustUse106MIT OR Apache-2.0Data structuresScience use-tokenComposable tokenization primitives for RustUse.111MIT OR Apache-2.0Text processing use-tomlLightweight TOML table and key-value helpers for RustUse48MIT OR Apache-2.0EncodingParser implementations use-tool-callTool-call metadata primitives for RustUse AI workflows.85MIT OR Apache-2.0Data structuresScience use-torqueTorque and lever-arm helpers for RustUse106MIT OR Apache-2.0MathematicsScience use-torusTorus primitives for the RustUse geometry workspace119MIT OR Apache-2.0MathematicsScience use-touch-targetPrimitive touch and click target size helpers106MIT OR Apache-2.0AlgorithmsScience use-traitPrimitive biological trait and phenotype vocabulary for RustUse106MIT OR Apache-2.0Data structuresScience use-transactionGeneric financial transaction primitives for RustUse finance crates97MIT OR Apache-2.0Data structures use-transformTransformation primitives for the RustUse geometry workspace119MIT OR Apache-2.0MathematicsScience use-transistorPrimitive transistor vocabulary for RustUse electronics crates104MIT OR Apache-2.0Data structures use-triangleSmall triangle primitives for RustUse geometry119MIT OR Apache-2.0MathematicsScience use-triangulationTriangulation primitives for the RustUse geometry workspace119MIT OR Apache-2.0MathematicsScience use-trigonometryUtility-first trigonometry scaffolding for RustUse245MIT OR Apache-2.0MathematicsScience use-trophic-levelPrimitive trophic-level vocabulary for RustUse104MIT OR Apache-2.0Data structuresScience use-tsTypeScript version and option primitives for RustUse103MIT OR Apache-2.0Development toolsParser implementations use-tsconfigPartial tsconfig metadata primitives for RustUse83MIT OR Apache-2.0ConfigurationDevelopment tools use-tuningTuning metadata primitives for RustUse.85MIT OR Apache-2.0Data structuresNo standard library::No dynamic allocation use-type-rhythmPrimitive type-rhythm helpers107MIT OR Apache-2.0AlgorithmsScience use-type-unitPrimitive typographic unit helpers106MIT OR Apache-2.0AlgorithmsScience use-typographyComposable facade crate for RustUse typography primitives81MIT OR Apache-2.0AlgorithmsScience use-typography-measurePrimitive readable-measure helpers107MIT OR Apache-2.0AlgorithmsScience use-udpUDP endpoint parsing and common UDP service helpers for RustUse.63MIT OR Apache-2.0 use-uiFeature-gated facade crate for RustUse framework-neutral UI primitives62MIT OR Apache-2.0Data structuresDevelopment tools use-ui-componentComponent identity and metadata primitives for RustUse UI80MIT OR Apache-2.0Data structuresGUI use-ui-motionMotion semantics primitives for RustUse UI79MIT OR Apache-2.0Data structuresGUI use-ulidThin ULID parsing and formatting primitives for RustUse108MIT OR Apache-2.0Data structuresEncoding use-unfoldingUnfolding primitives for the RustUse geometry workspace116MIT OR Apache-2.0MathematicsScience use-uniform-polytopeUniform polytope classification primitives for the RustUse geometry workspace119MIT OR Apache-2.0MathematicsScience use-unitsCross-domain unit primitives for RustUse.81MIT OR Apache-2.0MathematicsScience use-uriSmall URI utility primitives for RustUse65MIT OR Apache-2.0Parsing toolsWeb programming use-urlSmall URL utility primitives for RustUse65MIT OR Apache-2.0Parsing toolsWeb programming use-utf8UTF-8 validation and truncation helpers for RustUse46MIT OR Apache-2.0EncodingText processing use-utmUTM parameter parsing and formatting primitives for RustUse103MIT OR Apache-2.0Parser implementationsWeb programming use-uuidThin UUID parsing and formatting primitives for RustUse108MIT OR Apache-2.0Data structuresEncoding use-uvuv command and project metadata primitives for RustUse82MIT OR Apache-2.0Development tools use-validateComposable facade crate for RustUse validation primitives80MIT OR Apache-2.0Data structuresRust patterns use-variancePopulation and sample variance helpers over f64 slices.109MIT OR Apache-2.0 use-vectorSmall vector primitives and operations for RustUse884MIT OR Apache-2.0MathematicsScience use-vector-storeVector-store and embedding modeling primitives for RustUse81MIT OR Apache-2.0Data structuresDatabase interfaces use-venvPython virtual environment metadata primitives for RustUse82MIT OR Apache-2.0Development tools use-versionComposable version and semver primitives for RustUse.158MIT OR Apache-2.0Development toolsParser implementations use-viewportViewport and display context primitives for RustUse UI80MIT OR Apache-2.0Data structuresGUI use-viteVite config and framework preset primitives for RustUse82MIT OR Apache-2.0Development toolsWeb programming use-volatilityPrimitive volatility vocabulary for RustUse quantitative crates123MIT OR Apache-2.0AlgorithmsFinance use-voronoiVoronoi diagram primitives for the RustUse geometry workspace119MIT OR Apache-2.0MathematicsScience use-vueVue component and directive metadata primitives for RustUse83MIT OR Apache-2.0Development toolsWeb programming use-warcWARC and ARC web archive labels, extensions, and record metadata for RustUse83MIT OR Apache-2.0CompressionDevelopment tools use-wasiPure WASI version, profile, interface, capability label, and permission marker primitives.78MIT OR Apache-2.0Data structuresDevelopment tools use-wasmFacade crate for RustUse WebAssembly primitive utilities62MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-binaryWebAssembly binary magic-byte, version-byte, marker, and header validation primitives.81MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-componentWebAssembly Component Model component, world, interface, package reference, import, and export primitives.82MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-exportWebAssembly export name wrappers, export kind, and exported item metadata primitives.81MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-featureWebAssembly feature flag, stability status, parsing, and rendering primitives.81MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-functionWebAssembly function index, type index, local index, parameter list, result list, and signature metadata primitives.81MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-importWebAssembly import module/name wrappers, import kind, and imported item metadata primitives.80MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-memoryWebAssembly linear memory page-count, min/max limit, shared marker, and size conversion primitives.81MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-moduleModule-level WebAssembly name, metadata, import, export, and validation status primitives.81MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-sectionWebAssembly section kind, section ID conversion, parsing, and rendering primitives.80MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-targetRust WebAssembly target triple, target family, pointer-width, ABI, and profile label primitives.81MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-textWebAssembly text-format identifier, module-name, S-expression marker, and validation primitives.81MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-valueWebAssembly value type parsing, rendering, binary code, and classification primitives.99MIT OR Apache-2.0Data structuresDevelopment tools use-wasm-witWIT package, namespace, interface, world, type, function, and resource name primitives.79MIT OR Apache-2.0Data structuresDevelopment tools use-waveComposable wave primitives for Rust.81MIT OR Apache-2.0Science use-weather-forecastPrimitive forecast vocabulary for RustUse105MIT OR Apache-2.0Data structuresScience use-weather-frontPrimitive weather front vocabulary for RustUse104MIT OR Apache-2.0Data structuresScience use-weather-observationPrimitive weather observation vocabulary for RustUse104MIT OR Apache-2.0Data structuresScience use-webFeature-gated facade crate for RustUse web primitives82MIT OR Apache-2.0Parsing toolsWeb programming use-web-cssSmall CSS utility primitives for RustUse64MIT OR Apache-2.0Parsing toolsWeb programming use-webhookModels event names, endpoint URL wrappers, delivery identifiers, attempts, delivery status labels, signature header names, and…80MIT OR Apache-2.0Data structuresDevelopment tools use-weekdayPrimitive weekday helpers139MIT OR Apache-2.0AlgorithmsScience use-weighted-graphPrimitive weighted edge and weighted adjacency helpers105MIT OR Apache-2.0AlgorithmsScience use-wide-columnWide-column store modeling primitives for RustUse82MIT OR Apache-2.0Data structuresDatabase interfaces use-wildcardSimple wildcard matching helpers for RustUse63MIT OR Apache-2.0Text processing use-windPrimitive wind vocabulary for RustUse104MIT OR Apache-2.0Data structuresScience use-withProvides resource management utilities inspired by Kotlin's 'use' function and C#'s 'using' block, ensuring proper utilization…1,600MITMemory management use-wordComposable word-level text primitives for RustUse.110MIT OR Apache-2.0Text processing use-wordpressWordPress metadata primitives for RustUse.80MIT OR Apache-2.0Data structuresDevelopment tools use-wordpress-blockWordPress block metadata primitives for RustUse.81MIT OR Apache-2.0Data structuresDevelopment tools use-wordpress-hookWordPress hook metadata primitives for RustUse.82MIT OR Apache-2.0Data structuresDevelopment tools use-workMechanical work helpers for RustUse105MIT OR Apache-2.0MathematicsScience use-wythoffWythoff notation primitives for the RustUse geometry workspace119MIT OR Apache-2.0MathematicsScience use-xmlLightweight XML declaration, element, and attribute helpers for RustUse48MIT OR Apache-2.0EncodingParser implementations use-xzXZ labels and option metadata for RustUse97MIT OR Apache-2.0CompressionDevelopment tools use-yamlLightweight YAML marker and key-value helpers for RustUse48MIT OR Apache-2.0EncodingParser implementations use-yarnYarn workspace and command primitives for RustUse83MIT OR Apache-2.0Development tools use-yearPrimitive calendar year helpers107MIT OR Apache-2.0AlgorithmsScience use-z-scoreZ-score helpers and simple normalization over f64 slices.108MIT OR Apache-2.0 use-zero-crossingPrimitive zero-crossing helpers for signal slices108MIT OR Apache-2.0AlgorithmsScience use-zipZIP compression method labels for RustUse81MIT OR Apache-2.0CompressionDevelopment tools use-zstdZstd labels and option metadata for RustUse97MIT OR Apache-2.0CompressionDevelopment tools use_aws_mcpMCP server for AWS CLI operations565MIT OR Apache-2.0 use_cargoa fun game where you guess what number the computer has chosen.1,591MIT use_cratesA fun game where you guess what number the computer has chosen.1,481MIT OR Apache-2.0 use_cssDefine styles for your yew components inside CSS files.2,656MITWebAssemblyWeb programming use_css_procmacrosDefine styles for your yew components inside CSS files.2,074MITWebAssemblyWeb programming usearchSmaller & Faster Single-File Vector Search Engine from Unum840,053Apache-2.0 usecA Rust module with the ability of calculating US stock exchange calendar with full and half-day holidays18,144MIT usecopRust no_std implementation of the Sample Environment Control Protocol850MIT OR Apache-2.0 usecop-deriveRust no_std implementation of the Sample Environment Control Protocol834MIT OR Apache-2.0 usedused173MulanPSL-2.0 usedbySmall utility to see what is using a network port or local file7,536MIT useenvSetup environment defined in a configuration file87MITCommand line utilitiesDevelopment tools useful-serenityUseful Serenity tools5,075non-standard useful_libThis is my nerdy library for algorithms, data structures and mathematics74GPL-3.0 useful_macroCollections of useful macros80,293MITDevelopment tools useful_macrosMy useful macros1,995MIT useful_macsA collection of useful macros for Rust.1,171MIT Useful_MathA crate with a bunch of "useful" math features all in one place if you want specific math functions/structs I reccomend finding…12,259AGPL-3.0-or-later useful_numberA crate that provides useful number types.2,940MITNo standard library useful_staticA crate to use static like modern language6,157MIT usefulogA simple logging library194Unlicense usehidCross-platform virtual HID device library for AI agents36MITAPI bindingsHardware support usehid-coreCross-platform virtual HID device library for AI agents65MITAPI bindingsHardware support useless_minigrepA useless grep clone1,514MIT useless_prefix_useless_prefix_testRandom crate to test cargo.1,208MIT useless_setter_makerMacro for generating setter methods.2,471Apache-2.0 uselesskeyDeterministic cryptographic key and certificate fixtures for Rust tests. Seed-stable, cached, scanner-safe.122,677MIT OR Apache-2.0CryptographyDevelopment tools::Testing uselesskey-aws-lc-rsaws-lc-rs adapter traits for uselesskey RSA/ECDSA/Ed25519 fixtures.228MIT OR Apache-2.0CryptographyDevelopment tools::Testing uselesskey-axumaxum auth-test helpers backed by deterministic uselesskey fixtures.125MIT OR Apache-2.0CryptographyDevelopment tools::Testing uselesskey-cliDeterministic fixture generation and export helpers for local secret handoff formats.168MIT OR Apache-2.0CryptographyDevelopment tools::Testing uselesskey-coreCore factory, deterministic derivation, and cache engine for uselesskey test fixtures.124,973MIT OR Apache-2.0CryptographyDevelopment tools::Testing