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.

lnu-elytraLNU 岭南师范学院 正方教务系统 抢课 选课工具140AGPL-3.0 lnurlHelpers for LNURL5,479MIT lnurl-cliCLI tool kit for LNURL1,458MIT lnurl-payLNURL Pay113,532MIT lnurl-rsA basic LNURL implementation in Rust189,102MIT lnurl-serverA simple LNURL server2,149MIT lnurl-toolA CLI tool to encode/decode LNURL strings1,574MITCommand line utilities lnurlkitAll you need to support LNURL and nothing more28,028GPL-3.0-onlyAPI bindingsAsynchronous lnurlpA tiny command line tool to fetch BOLT11 invoices from LNURLs9,121MIT lnwasiNetlink Library for Web Assembly3,836Apache-2.0 lnxUtility to map lines from stdin onto command arguments to be executed6,356MITCommand line utilitiesDevelopment tools lolo provides traits that makes composing functions together simpler in Rust2,730Apache-2.0GUI lo_A modern Rust utility library delivering modularity, performance & extras ported from JavaScript Lodash18,916MITAsynchronousData structures lo_appDesktop application surface (start center, templates, recent files, autosave, macros, per-window HTML shells) over the lo_lok…3,914MIT lo_baseTabular data loading, type inference, and SQL query execution4,215MIT lo_calcSpreadsheet formula parser/evaluator and CSV conversion4,303MIT lo_cliCommand-line driver for the libreoffice-rs workspace crates331MIT lo_coreCore data models and XML utilities for ODF document generation5,113MIT lo_drawVector drawing page builder with ODG export4,220MIT lo_impressPresentation slide deck builder with ODP export4,225MIT lo_lokLibreOfficeKit-like in-process runtime: Office handle, document handles, command dispatch and tile rendering4,097MIT lo_mathLaTeX formula parser with MathML and ODF emission4,948MIT lo_odfODF package serializers for text, spreadsheet, presentation, drawing, formula, and database documents4,905MIT lo_unoUNO-like service registry framework4,216MIT lo_writerWriter-like document editing with Markdown and plain text import/export4,438MIT lo_zipMinimal pure-Rust ZIP reader/writer for ODF packages4,994MIT loaHTML parser written in pure Rust,no-std12,650MITNo standard libraryParser implementations loa-coreLOA agent core: identity, metrics, WAL, sync, rules, tunnel. Embeddable as a library.708MIT loadLoad generator for benchmark tasks with Zipf distribution1,373MIT OR Apache-2.0Development toolsDevelopment tools::Profiling load-balancerAsynchronous load balancing utilities for Rust — round-robin, random, cooldown, window, fault-tolerant, proxy pool with health…4,827MITAsynchronousNetwork programming load-bufferCrate for loading data into a fixed-sized buffer. Similar to BufRead, but allowing static or dynamic sizes, and no_std use.6,401MPL-2.0No standard libraryNo standard library::No dynamic allocation load-configA configuration loader library that supports multiple formats.89MITConfiguration load-dotenvThis is a small procedural macro to load your .env file at compile time34,039MIT load-dotenvyThis is a small procedural macro to load your .env file at compile time361MIT load-envA tool to load .env files3,909ISCCommand line utilities load-freedesktopSmall library for loading all freedesktop entries and giving you their name, exec and icon. Caches the results.1,794MIT OR Apache-2.0 load-makerLoad up your CPUs1,871MIT load-rsA simple HTTP load testing library and CLI tool127Apache-2.0Development tools::ProfilingNetwork programming load-strikerHTTP load testing tool4,233MIT OR Apache-2.0Command line utilities load_feature_bcSome tools that are 'internal' for now because they are insufficiently refined and unstable, but which are used by other 'public'…9,423MIT load_fileMacros to help conveniently load the contents of files during development.80,820MITDevelopment tools load_imageLoad PNG or JPEG with color profile support238,529BSD-3-ClauseMultimedia::Images load_lppCLI apps for logging, processing, and plotting load time series2,007GPL-3.0 load_sql_procA procedural macro for load & minifying SQL queries at compile time.9,772GPL-3.0CompressionDatabase interfaces load_switchLoad Switch library for Solar Racing @ GT1,598MITEmbedded developmentNo standard library load_vault_credentialshashicorp vault: load username / password kv credentials using a role id and secret id2,869MIT loadable-node-abiabi_stable FFI surface for RemoteMedia SDK loadable plugins (NodePlugin, FfiNode, FfiNodeFactory). Pinned independently of the…78MIT OR Apache-2.0 loadcellA no-std embedded-hal package for the hx711 load cell, based on the embedded hal. Has optional support for interrupts on the…6,859MIT OR Apache-2.0Embedded developmentHardware support loadconfLibrary for loading configuration files quickly.5,226ISCConfiguration loadedUn emprendimiento de código abierto robusto y fiable que protege tus datos y preserva tu privacidad.1,545Afmparse loaded_diceA simple sampler for loaded dices, implementing the alias method73,257non-standard loademCommand line tool for emulating web load from thousands of clients.11,486Apache-2.0Command line utilitiesDevelopment tools::Profiling loadenvA small, zero-dependency dotenv implementation18,234GPL-3.0-onlyConfigurationOperating systems loaderYou probably want to use libloading2,039MIT OR Apache-2.0 loadersA fully-featured, customisable progress bar and loading indicator library for Rust CLI and terminal applications18MITCommand-line interfaceVisualization loadingShow loading in terminal34,937MIT loading-bytesLoad bytes from paths on native and WASM2,901MIT OR Apache-2.0AsynchronousFilesystem loading_barSimple CLI loading bar crate5,619MIT loadingbarA simple loading bar for the terminal2,852MIT loadlessWrite less loading (progress bar) code in Rust.4,995non-standardCommand line utilities loadngo_eabA hyper-dimensional player profile, entitlement, and achievement blockchain of the player journey19BSD-3-Clause loadoutA declarative environment management tool26MITCommand line utilities loadprobeMercenaries 2 modernization — world-load progress and forensic analyzer for pmc_blackbox.log (milestone scoring + end-state…86MIT loadr-agentDistributed execution for loadr: coordination controller and load agents31non-standard loadr-browserHeadless-Chrome browser protocol for loadr (navigation timing + Web Vitals)32non-standard loadr-cliloadr: a modern load testing platform — k6 + JMeter in one binary17non-standard loadr-configYAML test definition schema, parsing, validation and interpolation for loadr139non-standard loadr-convertConvert JMeter .jmx test plans and k6 scripts into loadr YAML test definitions31non-standard loadr-coreLoad generation engine for loadr: executors, virtual users, metrics, thresholds118non-standard loadr-jsEmbedded JavaScript engine for loadr: isolated per-VU QuickJS runtimes with a k6-compatible standard library31non-standard loadr-outputsBuilt-in metric outputs for loadr: JSON, CSV, Prometheus, InfluxDB, OTLP and StatsD exporters31non-standard loadr-plugin-apiPlugin system for loadr: WASM component plugins (extractors/assertions) and native dynamic-library plugins…34non-standard loadr-plugin-webuiEmbedded web management UI for loadr: live dashboards, run control, test library32non-standard loadr-protocolsBuilt-in protocol handlers for loadr: HTTP/1.1+HTTP/2, GraphQL, WebSocket, gRPC, raw TCP/UDP32non-standard loadrsA command line tool to display users' CPU usage and warn about excessive usage.1,240MIT loadshA small example project3,986MIT loadsmithMod extraction and (un)installation utilities for a range of mod loaders.487MIT OR Apache-2.0 loadstarA simple web framework for rust7,340GPL-3.0-only loadstonePortable secure bootloader for Cortex-M MCUs1,650MITEmbedded developmentNo standard library loadstone_configPortable secure bootloader for Cortex-M MCUs - Configuration layer2,477MITEmbedded developmentNo standard library loadwiseA protocol-agnostic load balancing strategy engine for Rust18MIT OR Apache-2.0AlgorithmsNetwork programming loadwise-coreCore traits, strategies, and in-memory stores for loadwise477MIT OR Apache-2.0AlgorithmsNetwork programming loadwise-store-redisRedis-backed StateStore implementation for loadwise53MIT OR Apache-2.0 loadwise-towerTower Layer/Service adapter for loadwise53MIT OR Apache-2.0 loafWhy have a slice when you can have a loaf?8,085MITData structuresNo standard library loagoTrack how long ago you last did a task5,160MIT loalangLoa is a general-purpose, purely immutable, object-oriented programming language.7,317MIT loamFile-based tree storage8,701MIT OR Apache-2.0 loam-buildA library for gathering Subcontracts and Contracts18,068Apache-2.0 loam-cliLoam CLI for building smart contracts28,291Apache-2.0 loam-sdkSDK for writing smart contracts20,731Apache-2.0 loam-sdk-core-riffCore Riff for redeployable contracts7,048Apache-2.0 loam-sdk-ftA Riff for a fungible token6,397Apache-2.0 loam-sdk-macroMacros needed by loam-sdk16,986Apache-2.0 loam-soroban-cliSoroban CLI3,027Apache-2.0 loam-soroban-sdkA wrapper around the soroban-sdk, providing some soroban specific traits21,187Apache-2.0 loam-subcontract-coreCore Subcontract for redeployable contracts11,166Apache-2.0 loam-subcontract-ftA Subcontract for a fungible token11,044Apache-2.0 loan_ecA library for providing loan level EC measures.18,322MIT loanedSafely move values with live inner borrows.30,713MIT OR Apache-2.0 loatesLoates is a load testing framework, with focus on ease of use and flexiblity.1,794MITConcurrencyDevelopment tools lobLimit OrderBook1,324Apache-2.0Finance lob-orderbookHigh-performance limit order book with real-time market depth updates, NATS integration, and SQLite metrics36MIT lobattoGauss–Lobatto quadrature and interpolation points, spectral finite-element lagrangian basis operations with efficient hardcoded…126LGPL-3.0-onlyMathematicsScience lobatto-fftHigh-order FFT on Gauss–Lobatto grids and corresponding high-order solver for Poisson problems.32LGPL-3.0-onlyMathematicsScience lobatto-spectralHigh-order screened Poisson solvers on Gauss-Lobatto grids.19LGPL-3.0-onlyMathematicsScience lobbyTCP server implementation suitable for chat rooms and games.3,139 lobby-queueConst-size queue-like data structure.2,972MIT lobeA fast, cross-platform Brainfuck interpreter written in Rust171MITCommand line utilitiesParser implementations lobe-cliLobe — local-first HTTP performance profiling CLI for developers. Spins up a capture proxy, records DNS/TCP/TLS/TTFB/download…98MITCommand line utilitiesDevelopment tools lobe-coreLocal HTTP performance profiling engine — the shared library behind the Lobe CLI. Captures DNS/TCP/TLS/TTFB/download phases per…123MITDevelopment toolsNetwork programming lobowolf pack services10,049MIT OR Apache-2.0 lobsterA fast limit order book (LOB)22,495ISC lobsterchatMinecraft Chat Components and Adventure MiniMessage in Rust4,710MITData structuresParser implementations lobstercove-lichen-coreLichen core blockchain implementation363Apache-2.0 lobstersAsynchronous http client for the lobste.rs website3,357MIT OR Apache-2.0Web programming::HTTP client lobtamopreviously api bindings to education service13,564non-standardAPI bindings lobtuiTUI for lobste.rs website4,547GPL-3.0 locCount lines of code (cloc) fast.47,306MIT loc-rsAdvanced Lines of Code counter with function extraction, git integration, and parallel processing195MITCommand line utilitiesDevelopment tools loc_apiA simple library to interact with the loc.gov API10,174non-standardAPI bindingsData structures loc_counterA fast lines of code counter62MITCommand line utilitiesDevelopment tools locamemory allocation49,576MIT OR Apache-2.0 locadoraRecord and replay HTTP responses in your tests1,649Apache-2.0 localHelp you make Rust code safer. Macros to provide locally scoped safe alternatives to unsafe references or values.12BSD-2-Clause OR Apache-2.0 OR MITDevelopment toolsNo standard library local-atlas-data-apiA local MongoDB Atlas Data API for testing2,414Apache-2.0 local-channelA non-threadsafe multi-producer, single-consumer, futures-aware, FIFO queue60,981,032MIT OR Apache-2.0 local-develop-serverUnified MCP server for the coding pipeline — consolidates git / recipe / sandbox tooling into one process with shared session…292MIT OR Apache-2.0Development tools local-dnsLocal DNS management with profiles, wildcards, and system detection63MIT local-edf-readerA library for reading metadata and data from an local EDF (European Data Format) file.2,299MIT local-encodingRust library for encoding/decoding string with local charset. It usefull for work with ANSI strings on Windows.795,418MIT local-encoding-ngA rust library which simplifies the encoding and decoding from the local Windows Ansi codepage.12,761MIT local-envxA local-first CLI for working securely with .env files.101MITCommand line utilitiesConfiguration local-eventSingle-threaded version of `event_listener`237,621MIT local-exThread local async executor1,605MIT OR Apache-2.0 local-fmtThis crate provides localizable format strings.2,013MITLocalization (L10n) local-fmt-macrosThis crate provides localizable format strings.2,220MITLocalization (L10n) local-fmt-macros-internalThis crate provides localizable format strings.2,427MITLocalization (L10n) local-gc[WIP] High Performance Parallel GC for Rust1,790MPL-2.0 local-git-opsOffline git repository health dashboard: churn, hotspots, bus factor, bug clusters, velocity.22MITCommand line utilitiesDevelopment tools local-implA proc macro for creating extension traits.93,661EUPL-1.2 local-ipGet your local IP address.24,341MIT local-ip-addrA simple library for getting the local IP address of the current host18,613MITNetwork programming local-ip-addressRetrieve system's local IP address and Network Interfaces/Adapters on Linux, macOS and Windows.29,129,204MIT OR Apache-2.0Network programmingWeb programming local-jcs-storeStore a directory of JSON objects, indexed by a cannonical hash2,567MITData structuresDatabase implementations local-or-heapprovides a type with a pre-specified size, regardless of the size of the T type it contains, using heap allocation if necessary22,706MIT OR Apache-2.0AlgorithmsData structures local-outlier-probabilitiesLocal Outlier Probabilities (LoOP) calculation1,108non-standard local-pool-with-idA minor variation on a LocalPool executor which exposes unique IDs for tracking future completion.3,121MITAsynchronous local-rcuRCU with a safe API and local collection of old values5,974OSL-3.0 local-reconstruction-code-genGenerate encode matrices for Local Reconstruction Codes1,767MIT local-redirect-uriA simple HTTP server to provide a local redirect URI for OAuth2 and get the authorization code.67MIT local-review-coreShared core for local-first batched code review (diff parsing, anchoring, comment storage, TUI render)73MIT OR Apache-2.0Command-line interfaceDevelopment tools local-rolling-fileA rolling file appender with customizable rolling conditions.2,712MIT/Apache-2.0 local-runtimeThread-local async runtime2,034MIT OR Apache-2.0AsynchronousConcurrency local-searchFree structured web search for agents through a local browser27MITCommand line utilitiesWeb programming local-serveA simple file share over HTTP818MIT local-socketSimple client/server wrapper for a tokio unix domain socket1,586non-standard local-spawn-poolSpawn `!Send` futures in a pool and await for all of them to finish. Standalone alternative to `tokio::task::LocalSet`.2,125MITAsynchronousConcurrency local-sslLocal HTTPS certificate generation for development — pair with local-dns64MIT local-storeLocal storage primitives: platform-agnostic paths, atomic file/dir storage, atomic IO, format dispatch1,784MIT OR Apache-2.0ConfigurationFilesystem local-syncNon-threadsafe data structure for async usage1,133,678MIT OR Apache-2.0 local-type-aliasLocal type aliases in impl blocks8,688MITRust patterns local-wakerA synchronization primitive for thread-local task wakeup64,626,984MIT OR Apache-2.0AsynchronousNo standard library local_async_utilsUtilities for single-threaded async programming3,890Apache-2.0AsynchronousData structures local_buflocal_buf 是一个支持多线程异步的线程缓冲区63MITAsynchronousConcurrency local_file_cacheCache contents in local file.13,199Apache-2.0 local_ipaddressGet your local IP address without panic439,050MIT local_issues_libthe lib provide feature that local issue (like a github)12,570MIT OR Apache-2.0 local_lruA simple, thread-safe and lock-free LRU cache based on thread local storage.15,405MIT local_packageA local package4,914MIT local_s3A configurable in-process S3 server for integration tests1,020Apache-2.0 local_staticLocal static variable1,944MITEmbedded developmentNo standard library local_strtoolsCollection of string related utilities2,381MIT local_threadA local thread management library for Rust. No more 'static functions in order to start threads!2,061MIT local_timestampsoperations on local timestamps7,571MIT OR Apache-2.0Date and time local_vecfixed-capacity vector allocated on the stack19,938MITData structures local_verifyA Library containing utilities for the local verification of merkle tree response obtained from the managed verifier canister1,013MIT/Apache-2.0 local_weatherFinds your general lat/lon based on IP address and displays the current weather to stdout3,413ISC localappRust CLI to convert webpage into desktop app with tauri under 3 MB13,679MIT localauthA simple local variable based authentication crate. NO encryption or data persistence yet8,686MIT localauthentication-rsA wrapper for LocalAuthentication.framework in Rust3,078MIT OR Apache-2.0 localbangCross-platform, cross-browser, cross-search-engine duckduckgo-like bangs10,667MIT localbrainRust client for a localbrain endpoint — free, private, local AI (chat / classify / extract / summarize / embed). Talks to a local…10MITAPI bindingsAsynchronous localcacheCache expensive computation results tied to local files — fast, simple, and SQLite-backed.1,087Apache-2.0CachingFilesystem localcoderoxink.17MIT localctp-sysWrapper for LocalCTP simulation trading APIs.6,134MIT localdocA command line utility to facilitate interaction with .docpacks.451MIT localeLibrary for basic localisation. Warning: Major rewrite pending for 0.3!1,012,070MIT locale-codeslocale-related codes/identifiers and any standards-based information concerning them.34,054MITInternationalization (i18n)Localization (L10n) locale-decoderParser and data structure for dealing with locale strings.2,886MPL-2.0 locale-matchA small library for selecting the best match for user's preferred locales from available locales.6,990LGPL-3.0-or-laterInternationalization (i18n)Localization (L10n) locale-rsA strongly-typed locale library for Rust. Provides localized number and datetime formatting backed by Unicode CLDR data.633MIT OR Apache-2.0Internationalization (i18n)Localization (L10n) locale-settingsA higher-level interface to locale settings accessed via the POSIX C API.3,640MITAPI bindingsInternationalization (i18n) locale-strictIdiomatic, strictly validated, types for locale identifiers.1,870MITInternationalization (i18n)Localization (L10n) locale-translateCRATE HAS BEEN MOVED. PLEASE USE CRATE `ltranslate`.705MIT OR Apache-2.0 locale-typesIdiomatic types for locale identifiers.40,696MITInternationalization (i18n)Localization (L10n) locale_configMaintains locale preferences for process and thread and initialises them by inspecting the system for user preference.5,765,207MITOperating systems locale_name_code_pageRust library that helps us get code pages (then legacy encodings) used in Windows4,658MITEncoding localencryptTool to encrypt data in browser local storage5,199MIT localesEasy to use I18n5,581MIT/Apache-2.0