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.

lower-ir-utilsHelpers for mapping Rust types to Cranelift JIT signatures, lowering call arguments, and reducing module boilerplate.67MITCompilersDevelopment tools lower-ir-utils-macrosProcedural macros for lower-ir-utils (`#[jit_export]` and supporting helpers).103MITDevelopment tools lower-macrosdesugar math where the compiler wont10,271MIT lowercase-hexFast byte array to lowercase hex string conversion1,022MIT OR Apache-2.0No standard libraryValue formatting lowessLOWESS (Locally Weighted Scatterplot Smoothing)3,281MIT OR Apache-2.0AlgorithmsScience lowestbinsLowestbins made in rust for maximum efficiency7,226Apache-2.0Command line utilities lowfatToken-aware output and file content filter for LLM environments1,026Apache-2.0 lowfat-compressContent-aware file compression for LLM token reduction141Apache-2.0 lowfat-coreCore types, config, tokens, SQLite tracking for lowfat1,602Apache-2.0 lowfat-pluginPlugin manifest, discovery, registry for lowfat1,421Apache-2.0 lowfat-runnerPlugin runners (process, future: WASM) for lowfat1,247Apache-2.0 lowfiAn extremely simple lofi player.31,193MITCommand-line interfaceCommand line utilities lowkitlowkit24MIT lowletLow-latency IPC library using shared memory and lock-free structures62MITConcurrencyMemory management lowlevel-typesRust types for working with low level data structures, such as ASCII characters and strings1,773MIT OR Apache-2.0EncodingParser implementations lowmc-rsLowMC block cipher implementation in Rust503MIT OR Apache-2.0Cryptography lowoGenesis, a new dawn807Unlicense lowpass-filterSimple first-order digital lowpass filters, compatible with `no_std`. You can use it, for example, to get the low frequencies…34,413MITMultimediaNo standard library lowpassnsLightweight no_std low-pass filters for embedded systems, open source and GPL-protected.54GPL-2.0-or-later lowram-ipsumAdds IP addresses. Suitable for no_std/memory constrained environments.37AGPL-3.0 loxFast polygon mesh library with different data structures and traits to abstract over those.5,579MIT/Apache-2.0Data structuresGraphics lox-analysisMission analysis tools for the Lox ecosystem505MPL-2.0AerospaceScience lox-approxApproximate equality testing with absolute and relative tolerances (PEP 485 `math.isclose`)27MPL-2.0AerospaceScience lox-bodiesCelestial body definitions for the Lox ecosystem9,483MPL-2.0AerospaceScience lox-cliLoxone Config-as-Code CLI — download, inspect, edit, and push Loxone configs23AGPL-3.0-or-later AND LicenseRef-CommercialCommand line utilitiesNetwork programming lox-commsCommunication systems and link budget analysis for the Lox ecosystem617MPL-2.0AerospaceScience lox-coreCommon data types and utilities for the Lox ecosystem2,135MPL-2.0AerospaceScience lox-deriveDerive macros for the Lox ecosystem6,634MPL-2.0AerospaceScience lox-earthTools for Earth-based astrodynamics for the Lox ecosystem9,862MPL-2.0AerospaceScience lox-ephemEphemerides for the Lox ecosystem6,706MPL-2.0AerospaceScience lox-extensionsA reputation-based bridge distribution system that provides privacy protection to users and their social graph while remaining…170MITCryptography lox-framesReference frame transformations for the Lox ecosystem2,391MPL-2.0AerospaceScience lox-interpreterA Lox programming language interpreter written in Rust26MIT OR Apache-2.0Command line utilitiesParser implementations lox-ioInterfaces for industry-standard astrodynamics file formats for the Lox ecosystem7,924MPL-2.0AerospaceScience lox-iturITU-R P-series atmospheric propagation models for the Lox ecosystem334MIT AND MPL-2.0AerospaceScience lox-langA Lox language runtime for Rust4,591MITCommand line utilitiesParser implementations lox-libraryMain Lox library with protocols and functions that make up Lox3,938MITCryptography lox-macrosHelper crate for `lox`. Please see the docs of `lox` for more information. Do not use this crate directly, API stability is not…2,935MIT/Apache-2.0 lox-mathMathematical utilities for the Lox ecosystem9,099MPL-2.0AerospaceScience lox-odmCCSDS Orbit Data Message (ODM) types and (de-)serialization for the Lox ecosystem169MPL-2.0AerospaceScience lox-orbitsSpacecraft orbit modelling tools for the Lox ecosystem14,994MPL-2.0AerospaceScience lox-scannerlexical scanner for Lox4,194MITParser implementationsParsing tools lox-simLoxone Miniserver SPS simulator — offline circuit testing for 195 block types73AGPL-3.0-or-later lox-spaceThe Lox toolbox for space mission analysis and design19,710MPL-2.0AerospaceScience lox-test-utilsTesting utilities for the Lox ecosystem2,380MPL-2.0AerospaceScience lox-timeTime modelling tools for the Lox ecosystem9,267MPL-2.0AerospaceScience lox-unitsPhysical units for the Lox ecosystem1,866MPL-2.0AerospaceScience lox-wasmWASM bindings for lox1,584MITExternal FFI bindingsWebAssembly lox-zkpA toolkit for auto-generated implementations of Schnorr proofs6,770CC0-1.0Cryptography lox_oneA tree-walking interpreter for the Lox programming language.1,647MIT lox_utilsGeneral helpers used by Lox3,525MITRust patterns loxaLoxa — local inference studio & CLI. Run private AI models on your own machine. Early WIP; name reserved.43MITCommand line utilities loxcraftA compiler, VM, language server, and online playground for the Lox programming language2,797MIT loxi-architect-sdkClient SDK for building Loxi architect nodes — connects to the orchestrator and dispatches routing tasks159MIT loxi-cliCommand-line interface for Loxi routing solver20MIT loxi-coreCore node-selection and worker-pool primitives for the Loxi distributed routing network282MIT loxi-logisticsLogistics solver integrating VRP, matrix routing, and H3 spatial partitioning for the Loxi network94MIT loxi-orchestratorWebSocket orchestrator for the Loxi distributed task auction system93MIT loxi-typesCore domain types and schemas for Loxi routing solver219MIT loxi-wasm-sdkWASM bindings and shared utilities for Loxi browser worker nodes159MIT loylylöyly — the trust infrastructure for AI agent communication. https://loyly.dev20Apache-2.0Network programming loyly-clilöyly — the trust infrastructure for AI agent communication. https://loyly.dev20Apache-2.0Network programming loyly-clientlöyly — the trust infrastructure for AI agent communication. https://loyly.dev21Apache-2.0Network programming loyly-corelöyly — the trust infrastructure for AI agent communication. https://loyly.dev20Apache-2.0Network programming loyly-relaylöyly — the trust infrastructure for AI agent communication. https://loyly.dev21Apache-2.0Network programming loyly-storelöyly — the trust infrastructure for AI agent communication. https://loyly.dev21Apache-2.0Network programming loyly-typeslöyly — the trust infrastructure for AI agent communication. https://loyly.dev20Apache-2.0Network programming lozizolBack to basics, efficient event-sourcing protocol16,066MIT OR Apache-2.0 lpAn embeddable plugin system for Rust applications.8,825MITAPI bindingsConfiguration lp-modelerA linear programming modeller written in Rust. This api helps to write LP model and use solver such as CBC, Gurobi, lp_solve, ...22,269MIT lp-solvers.lp file format implementation and external solver invocation for Cbc, Gurobi, cplex, and GLPK63,654MIT lp-typesShared types definition for linear programming2,086MPL-2.0 lp5018no_std driver for the lp5018 i2c LED driver7,353MIT OR Apache-2.0Embedded developmentNo standard library lp50xxA simple platform agnostic library for the Texas Instruments LP50XX led driver8,947MITEmbedded developmentHardware support lp50xx-asyncAsync Rust driver for the lp50xx family of Texas Instruments I2C RGB LED drivers27MIT OR Apache-2.0Embedded developmentHardware support lp55231Driver for the TI LP55231 using embedded-hal traits4,9070BSDEmbedded developmentHardware support lp586xLP586x matrix LED driver (supports LP5860, LP5861, LP5862, LP5864, LP5868)3,672MIT OR Apache-2.0Embedded developmentHardware support lp_parser_rsA Rust parser for the LP file format.41,586MIT OR Apache-2.0AlgorithmsMathematics lp_solverType-safe linear-programming model builder with pluggable CBC/Gurobi backends44MIT OR Apache-2.0MathematicsScience lp_tetrisA tetris clone running on a Novation Launchpad Mk2 MIDI controller9,829non-standard lpadLeft-pad each line in a string1,478MIT lpass-blobCheck your LastPass blob for AES-ECB encryption1,606WTFPL lpcLocal Procedure Call for ipc channel impl5,553MIT lpc-usbd'usb-device' implementation for LPC microcontrollers3,561MIT lpc11uxxRegister mappings for the NXP LPC11Uxx family of ARM Cortex-M0+ microcontrollers6,891MIT OR Apache-2.0Embedded developmentHardware support lpc11uxx-halHAL for the LPC11Uxx family of µ-controllers2,089MIT OR Apache-2.0Embedded developmentHardware support lpc11xxRegister mappings for the NXP LPC111x/LPC11Cxx/LPC11xxL/LPC11xxXL family of Cortex-M0 microcontrollers8,757MITEmbedded developmentHardware support lpc11xx-async-halAsynchronous HAL for the NXP LPC111x/LPC11Cxx/LPC11xxL/LPC11xxXL family of Cortex-M0 microcontrollers6,125MITEmbedded developmentHardware support lpc13xxPeripheral access API for NXP LPC13xx microcontrollers generated through svd2rust3,216Apache-2.0Embedded developmentHardware support lpc13xx-pacDevice support crates for LPC13XX-PAC devices1,723MIT/Apache-2.0Embedded developmentNo standard library lpc1769Peripheral access API for NXP LPC1769 microcontrollers1,689Apache-2.0 OR MITEmbedded developmentNo standard library lpc176x-5xRegister mappings for the NXP LPC176x-5x family of ARM Cortex-M3 microcontrollers9,127WTFPLEmbedded developmentHardware support lpc176x5x-pacA Peripheral Access Crate for the NXP LPC176x5x series microcontrollers.42MITEmbedded developmentNo standard library lpc177x_8xPeripheral access API for LPC177x and LPC178x microcontrollers (svd2rust 0.13.1)11,293MIT OR Apache-2.0 lpc177x_8x-halImplementation of the `embedded-hal` traits for LPC177x/8x8,204MIT OR Apache-2.0 lpc178x7x-pacPeripheral Access Crate for the NXP LPC17xx series microcontrollers42MITEmbedded developmentHardware support lpc43xxRegister definitions for the NXP LPC43xx microcontroller platform, generated through svd2rust8,596Apache-2.0Embedded developmentHardware support lpc43xx-halembedded-hal implementation for the NXP LPC43xx microcontroller platform4,774Apache-2.0Embedded developmentHardware support lpc54606-pacLow-level register mappings for the NXP LPC54606 series of ARM Cortex-M4 microcontrollers1,9680BSDEmbedded developmentHardware support lpc546xx-halPeripheral access API for LPC546xx series microcontrollers3,1280BSDEmbedded developmentHardware support lpc546xx-pacDevice support crates for LPC546XX-PAC devices6,988MIT/Apache-2.0Embedded developmentNo standard library lpc55Host-side tooling to interact with LPC55 chips via the ROM bootloader35,458Apache-2.0 OR MITCommand line utilitiesConfiguration lpc55-halHardware Abstraction Layer (HAL) for the NXP LPC55S6x ARM Cortex-33 microcontrollers26,603Apache-2.0 OR MITEmbedded developmentNo standard library lpc55-pacPeripheral access API for NXP LPC55 microcontrollers222,264Apache-2.0 OR MITEmbedded developmentNo standard library lpc55-rticReal-Time Interrupt-driven Concurrency (RTIC): a concurrency framework for building real-time systems12,649MIT OR Apache-2.0ConcurrencyEmbedded development lpc55-rtic-macrosProcedural macros of the cortex-m-rtic crate10,701MIT OR Apache-2.0ConcurrencyEmbedded development lpc550xRegister mappings for the NXP LPC550x/LPC55S0x family of Cortex-M33 microcontrollers4,336MITEmbedded developmentHardware support lpc55s6x-halHardware Abstraction Layer (HAL) for the NXP LPC55S6x ARM Cortex-33 microcontrollers5,069Apache-2.0 OR MITEmbedded developmentNo standard library lpc55s6x-pacPeripheral access API for NXP LPC55s6x microcontrollers15,364Apache-2.0 OR MITEmbedded developmentNo standard library lpc55s6x-usbd`usb-device` implementation for NXP LPC55S6x microcontrollers3,053Apache-2.0 OR MIT lpc81x-halHigh-level API and HAL implementations for LPC81x microcontrollers.3,169MIT lpc81x-pacDevice support crates for LPC81X-PAC devices4,129MIT/Apache-2.0Embedded developmentNo standard library lpc82xDEPRECATED. Use lpc82x-hal or lpc82x-pac instead.21,7780BSD lpc82x-halDEPRECATED. Please use lpc8xx-hal.7,6580BSD lpc82x-pacLow-level register mappings for the NXP LPC82x series of ARM Cortex-M0+ microcontrollers14,9300BSDEmbedded developmentHardware support lpc845-pacLow-level register mappings for the NXP LPC845 series of ARM Cortex-M0+ microcontrollers16,9060BSDEmbedded developmentHardware support lpc8xx-halHardware Abstraction Layer (HAL) for the NXP LPC800 series of ARM Cortex-M0+ microcontrollers21,6890BSDEmbedded developmentHardware support lpc_checksumHandle LPC BootROM checksum calculation for various LPC processor1,808MIT OR Apache-2.0Development tools::Build UtilsEmbedded development lpcgA lib to generate character spritesheets based on LPC4,338 AGPL-3.0Game developmentMultimedia lpdThe implementation of a Lightning Network node2,085Apache-2.0 lperftA blazingly fast, multithreaded perft tool729GPL-3.0Command line utilitiesGames lpf_1_testA test1,486MIT OR Apache-2.0 lpfsRetriving infomations from linux proc filesystem55,072MIT lpkDecrypt the `.lkp` file from `Live2dViewerEx`726MPL-2.0 lplA command-line utility to plot charts from line-based inputs.1,656AGPL-3.0 lpl-token-auth-rulesMPL Token Authorization Rules that can be used to restrict common token operations3,314non-standard lpl-token-metadataledamint Metadata5,290non-standard lpl-token-metadata-context-deriveMetaplex Metadata2,583non-standard lpl-token-vaultMetaplex Token Vault2,954AGPL-3.0 lpl-utilsMPL Core Utils library2,134non-standard lpledLPL Editor - RetroArch playlist filter and stream editor177non-standardCommand line utilitiesEmulators lpmA configurable LaTeX project manager5,283GPL-3.0-or-laterCommand line utilities lpnSoftware to study attacks on the Learning Parity with Noise problem7,130MIT lprsimple LPR client using the classic Line Printer Daemon Protocol - TCP only10,933AGPL-3.0 lprefixA tool for prefixing lines in pipes2,910MIT lproj2esDump iOS localization strings into ElasticSearch3,729MIT lprq-rsA Rust implementation of the LPRQ668MIT OR Apache-2.0ConcurrencyData structures lprsA local CLI vaults manager. For human and machine use8,499GPL-3.0-or-laterCommand line utilities lprsemuEmulator, debugger and assembler for LPRS1 ISA & CPU6,410MITCommand-line interfaceDevelopment tools::Debugging lpruna library for running and managing LOVE binaries1,924MIT lpsA local publish-subscribe pattern implementation1,689MPL-2.0 lps22A platform agnostic driver to interface the ST LPS22 pressure sensor1,907MIT OR Apache-2.0Embedded developmentHardware support lps22df-rsPlatform-agnostic driver for the LPS22DF ultracompact digital barometer and absolute pressure sensor with I2C, SPI interfaces.431BSD-3-ClauseEmbedded developmentNo standard library lps22hbA platform agnostic driver to interface with LPS22HB pressure sensor module.6,371MITEmbedded developmentHardware support lps22hh-rsPlatform agnostic driver for the ST LPS22HH pressure and temperature sensor.476BSD-3-ClauseEmbedded developmentNo standard library lps25hbA platform agnostic driver to interface with LPS25HB pressure sensor module.7,482MITEmbedded developmentHardware support lps28dfwPlatform-agnostic Rust driver for the LPS28DFW pressure sensor2,413MIT OR Apache-2.0Embedded developmentHardware support lpsettingsa settings library for accessing lovepack settings7,266MITConfiguration lpsolveHigh-level lpsolve wrapper76,996MIT OR Apache-2.0 lpsolve-sysRaw lpsolve bindings77,971MIT OR Apache-2.0 lptLow priority thread3,306MIT lpu-macrosMacros used for lego-powered-up4,350MPL-2.0 LPVecA simple VEC lib written to demo Rust at Logpoint1,749MIT lpwanAn LPWAN Network Stack for rust IoT devices1,703MPL-2.0 lpwstrConvert between safe types and raw u16 pointers for Windows FFI1,427MIT/Apache-2.0API bindingsOperating systems::Windows APIs lpxTerminal Animated GIF Viewer32MITCommand line utilities lqlow overhead yq/tq/jq cli6,366Apache-2.0Command line utilitiesParsing tools lqalqa1,759MIT lqfA lightweight, easy-to-read config format with clean section syntax and simple parsing.1,504MIT lqrA generic LQR feedback controller2,438MIT lqTestNil4,480MIT lqthSimple but blazingly fast screenshot utility11,165MITCommand line utilities lqxnjk工具箱352MIT OR Apache-2.0 lrEither left or right1,836MIT lr-cw-ownableUtility for controlling ownership of CosmWasm smart contracts1,260Apache-2.0 lr1120Driver for Semtech LR1120229MITEmbedded developmentNo standard library lr11xxLR1110/LR1120/LR1121 driver196MIT OR Apache-2.0Embedded developmentNo standard library lr2-oxytablerTable manager for Lunatic Rave 24,028MITGames lr2021Driver for Semtech LR20213,241MITEmbedded developmentNo standard library lr35902Gameboy emulator written in Rust and WebAssembly3,698MPL-2.0 lr_parsermacros for ruly25,253MIT lr_rustA package for LALR(1) and LR(1) parsing.114MIT lr_rust_parsing_macroparsing_macro sub library for lr_rust.253MIT lr_rust_shared_structsshared_structs sub library for lr_rust.347MIT lr_trieLeft-Right trie is trie capable of mapping any string to any string.23,088MITData structures lra-cliCLI tool for the Living Research Artifact standard16Apache-2.0Command line utilitiesWeb programming lradAn update framework for applications running on hobbyits single-board-computers (CS5285 Final Project)1,886MIT lrapiuta rust package api for L'IUT La Rochelle services8,381ISC lrauLrAU is an authentication and permission management system.11,899AGPL-3.0Authentication lrcA pure Rust implementation of LyRiCs which is a computer file format that synchronizes song lyrics with an audio file.19,539MITParser implementationsValue formatting lrc-nomSimple zero-copy LRC parser wrote with nom10,205MIT lrc_rsRobust crate for working with synced lyrics content in the LRC format with support for the A2 extension213MITEncodingParser implementations lrcalllrcall is a Rust procedure call framework that is compatible with local and remote procedure calls.6,901MITAsynchronousNetwork programming lrcall-macrolrcall-macro is Proc macros for lrcall.4,985MITAsynchronousNetwork programming lrcall-pluginslrcall-plugins is Proc macros for lrcall.1,081MITAsynchronousNetwork programming lrcat-extractorExtract data from Adobe Lightroom™ catalogs.9,437MPL-2.0 lrclassifierA simple logistic regression classifier implementation1,525MIT lrclib-api-rsLRCLib API Wrapper.6,889MIT lrcsynca simple tool to sync lrc files from lrclib.net4,798GPL-3.0 lrdfCommandline tool to generate a dataframe from Oxford Nanopore FastQ1,565EUPL-1.2 lreRust bindings for the regular expression library from QuickJS356MITText processing lreqwest_cookie_storeA simple crate providing an implementation of the `reqwest::cookie::CookieStore` trait for `cookie_store::CookieStore`32MIT/Apache-2.0Web programmingWeb programming::HTTP client lretryAuto retry command until success.1,162AGPL-3.0-only lrgA utility to help find the largest file(s) in a directory5,401MITCommand line utilitiesFilesystem lrgeGenome size estimation from long read overlaps4,277non-standardCommand line utilitiesScience lrklearning rust5,558non-standard lrlexSimple lexer generator936,510Apache-2.0/MITParsing tools lrnLong Running Command Notifier2,999MIT lrpA set of parsers for Rust lazy coders2,560MITAccessibilityCompilers lrparYacc-compatible parser generator934,819Apache-2.0/MITParsing tools