Source: doc.rust-lang.org (std library reference) · crates.io database dump, 2026-07-25 (crates directory)Contact
BROWSE A-Z

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.

jetskySkylight's jetstream consumer937MIT jetson-flashHeadless Jetson Orin (Tegra234) flashing pipeline: config, staging, preconfig, recovery detection, NVMe flash19Apache-2.0Command line utilitiesEmbedded development jetson-halHardware abstraction layer for Jetson-based robots (camera, audio, GPS, motor control)54MITHardware supportOperating systems::Linux APIs jetson_gpioA Rust port of NVIDIA's Python library for controlling GPIO pins on select Jetson devices3,407MITEmbedded developmentHardware support jetson_monitorA Rust-based monitoring tool for Jetson Nano to track CPU, GPU, RAM, and temperature metrics.2,844MIT jetson_nano_monitorA Rust-based monitoring tool for Jetson Nano to track CPU, GPU, RAM, and temperature metrics.1,717MIT jetsongpioA Rust library for controlling GPIO pins on NVIDIA Jetson devices89MIT jetstreamJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.68,049BSD-3-Clause jetstream-extraSet of utilities and extensions for the JetStream NATS of the async-nats crate9,093Apache-2.0API bindingsNetwork programming jetstream-oxideLibrary for easily interacting with and consuming the Bluesky Jetstream service.6,117MIT jetstream_9pJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.37,051BSD-3-Clause jetstream_clientJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.33,507BSD-3-Clause jetstream_cloudflareJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.212BSD-3-Clause jetstream_clusterJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.985BSD-3-Clause jetstream_codegenJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.862BSD-3-Clause jetstream_deriveJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.18,969BSD-3-Clause jetstream_distributedJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.10,041BSD-3-Clause jetstream_errorJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.1,078BSD-3-Clause jetstream_httpJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.228BSD-3-Clause jetstream_interopJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.38BSD-3-Clause jetstream_irohJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.2,177BSD-3-Clause jetstream_libcPlatform-specific libc bindings for jetstream4,448BSD-3-Clause jetstream_macrosJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.32,204BSD-3-Clause jetstream_p9Server implementation of the 9p file system protocol12,748BSD-3-Clause jetstream_p9_wire_format_deriveSupporting proc-macro for the `p9` crate.12,980BSD-3-Clause jetstream_quicJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.2,293BSD-3-Clause jetstream_rpcJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.38,599BSD-3-Clause jetstream_serverJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.31,220BSD-3-Clause jetstream_ufsJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.32,907BSD-3-Clause jetstream_websocketJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.1,951BSD-3-Clause jetstream_wire_format_deriveSupporting proc-macro for the `p9` crate.9,133BSD-3-Clause jetstream_wireformatJetstream is a RPC framework for Rust, based on the 9P protocol and QUIC.47,176BSD-3-Clause jetstreamerHigh-throughput Solana transaction ledger streaming and plugin framework suitable for research and backfilling1,931MIT OR Apache-2.0 jetstreamer-firehoseSupport crate for Jetstreamer containing firehose ingestion engine and core abstractions5,870MIT OR Apache-2.0 jetstreamer-pluginSupport crate for Jetstreamer containing plugin framework abstractions and utilities2,230MIT OR Apache-2.0 jetstreamer-utilsSupport crate for Jetstreamer containing utility functions, types, and ClickHouse integration3,369MIT OR Apache-2.0 jettiA fast, cross-platform tool for organizing git repositories46MITCommand line utilitiesDevelopment tools jettyJet clustering13,603GPL-3.0-or-laterScience jeu_du_plus_ou_du_moinsUn jeu où vous devez deviner quel nombre l'ordinateur a choisi.1,843MIT OR Apache-2.0 jeu_du_plus_ou_du_moins_heryUn jeu où vous devez deviner quel nombre l'ordinateur a choisi.17MIT OR Apache-2.0 jevilA stateless few-time signature scheme with a sharp cliff at the (n*+1)-th signature.19MIT OR Apache-2.0Cryptography jevmallocRust allocator wrapping jemalloc.27MIT/Apache-2.0API bindingsMemory management jevmalloc-sysRust allocator wrapping jemalloc.133MIT/Apache-2.0API bindingsMemory management jewelBLE for a bare-metal, real-time system.2,794BSD-2-ClauseAsynchronousEmbedded development jewel-nrf52840BLE for a bare-metal, real-time system.1,629BSD-2-ClauseAsynchronousEmbedded development jewelsA simple secret scanner and redactor utility19MITDevelopment tools jexjex is a tool for interactively exploring and manipulating json files9,265MITCommand line utilities jexl-evalA JEXL evaluator written in Rust822,442MPL-2.0 jexl-parserA JEXL parser written in Rust924,317MPL-2.0 jexprA general-purpose, extensible evaluator for JSON-based prefix expressions, inspired by Mapbox GL expressions.630Apache-2.0ConfigurationData structures jfA small utility to safely format and print JSON objects in the commandline41,831MITCommand line utilities jf-toolMy personal command line tool for various tasks.1,515MITCommand line utilities jfcA CLI tool for working with malformed JSON12,028MITCommand line utilities jfeedcrate to read and write JSON feeds.54MIT jfetchSimple command-line system information tool written tool like neofetch but in rust 🦀5,886non-standardCommand line utilities jffiCross-platform framework for building native apps with Rust business logic and platform-native UIs498GPL-3.0Command line utilitiesDevelopment tools jffs2Rust implementation of jffs2 reader🦀4,363MIT jfifdumpRead and dump structure of a jpeg file9,712,770MIT OR Apache-2.0Multimedia::Images jfifdump-cliRead and dump structure of a jpeg file7,582MIT OR Apache-2.0Multimedia::Images jflowBeautiful patch-stack workflow tool for Jujutsu (jj) with GitHub integration70MITCommand line utilitiesDevelopment tools jflow-coreShared types, configuration, and application state for the JANUS trading engine (signals, config, unified metrics, inter-module…19MITFinance jfmtjfmt is a command-line tool for formatting json files in both readable and compact formats. It supports stdin/stdout shell…6,206MITCommand line utilitiesText processing jfnA tool for evaluating a JavaScript function and printing the result.7,625MIT jfpA CLI to parse json files, being able to output properties and array indexes1,981AGPL-3.0-only jfrsJava Flight Recorder reader for Rust45,448Apache-2.0Parser implementations jfsA JSON file store73,793MIT/Apache-2.0Database interfaces jfs-zgyA journaling file system demonstrating crash consistency (Three Easy Pieces)19MIT jftpJust Forward The Port1,637MIT jgJeff Goldblum (jg) is a command-line JSON processor. jg searches for structural patterns in json input and prints each json…7,393MITCommand line utilitiesText processing jgdTransform geodetic datums used in Japan4,721MIT jgd-rsA simple Rust library for generating realistic JSON data using declarative schema definitions2,111MITData structuresDevelopment tools::Testing jgd-rs-cliCommand-line tool for generating JSON data from JGD (JSON Generator Definition) schema files1,349MITCommand line utilitiesDevelopment tools::Testing jgdtransCoordinate Transformer by Gridded Correction Parameter (par file)19,766MIT OR Apache-2.0Science::Geospatial jgetRust tools.7,194MIT OR Apache-2.0AccessibilityDevelopment tools jget_deriveRust tools.7,603MIT OR Apache-2.0AccessibilityDevelopment tools jgfJira-GitHub Flow CLI tool for seamless project management956MITCommand line utilitiesDevelopment tools jghisome description1,841MIT jglMulti-repo manager for jujutsu (jj)51MITCommand line utilitiesDevelopment tools jgpgA Rust binary and library for converting gpg --list-keys (apt-key list etc.) output to JSON in DevOps, CI/CD pipelines.40non-standardCommand line utilities jgrepA tool to grep JSON1,255MITCommand line utilities jgzeA tool for editing gzipped JSON files directly2,635MITCommand line utilities jhPure Rust implementation of the JH cryptographic hash function302,119MIT OR Apache-2.0CryptographyNo standard library jh-ffiRust JH hash function (via ffi binding)9,801GPL-3.0 jh-rsJH hash implementation in pure rust1,744non-standard jh-s3S3 protocol client in Rust3,071AGPL-3.0-or-later jh-x86_64Portable JH with optimizations for x86-64 cpus15,969MIT/Apache-2.0CryptographyNo standard library jh7110-vf2-12a-pacBoard support package for the JH7110 VisionFive2 v1.2a board4,265GPL-3.0-onlyEmbedded developmentHardware support jh7110-vf2-13b-pacBoard support package for the JH7110 VisionFive2 v1.3b board4,447GPL-3.0-onlyEmbedded developmentHardware support jh71xx-halHardware abstraction library for the JH71xx SoCs14,528GPL-3.0-onlyEmbedded developmentHardware support jh71xx-pacPeripheral access crate for the JH71xx SoCs26,354GPL-3.0-onlyEmbedded developmentHardware support jhashRust implementation of Jenkins hash with 32-bit sized optimizations.39,320BSD-3-Clause jheap_histoIngests Java heap histograms to Elasticsearch2,530MIT jhhiIngests Java heap histograms to Elasticsearch3,582MIT jholFast, offline-friendly package manager with cache, doctor, and npm fallback42non-standardCommand line utilitiesDevelopment tools jhol-coreCore logic for Jhol: cache, install, doctor, registry, lockfile100non-standard jhonJinHui's Object Notation language, basically it's design for config file84MIT jhtesttest rust crate from my book1,027MIT jiSimple CLI for getting the key for a selected JIRA issue3,460MIT OR Apache-2.0 ji-cliEncrypt dotfiles into a single .ji file for safe cross-device migration31AGPL-3.0 ji_cloud_sharedshared types for ji cloud project1,793MIT OR Apache-2.0 jia-parseCommand-line and library parser for PDDL and Jia model files.31Apache-2.0Command line utilitiesParser implementations jia_pipe_viewerThis was made for cruise but you can give it a shot4,280MIT OR Apache-2.0Command line utilities jian-aiJian-Ai (非攻兼爱): multi-agent coordination system with universal love protocol, distributed consensus, gRPC services, RocksDB…18MITNetwork programmingScience jiang_mini_grepminigrep 查询文件的某个字符2,674MIT jiaoCross platform 2D graphics library15,677LGPL-3.0Computer visionGraphics jiao-cairoCross platform 2D painting engine (cairo/gtk binding part)3,227Apache-2.0Computer visionGraphics jiao-qtCross platform 2D painting engine (Qt binding part)3,228Apache-2.0Computer visionGraphics jiao-shapesCross platform 2D painting engine (2d vector shapes part)2,718Apache-2.0Computer visionGraphics jiao-skiaCross platform 2D painting engine (skia binding part)3,175Apache-2.0Computer visionGraphics jiao-webCross platform 2D painting engine (web/wasm binding part)3,219Apache-2.0Computer visionGraphics jiaxin2006-tg-rcore-tutorial-easy-fs-t1l4A simple filesystem implementation for rCore tutorial OS.127GPL-3.0Embedded developmentFilesystem jiaxin2006-tg-rcore-tutorial-easy-fs-t3l8A simple filesystem implementation for rCore tutorial OS.112GPL-3.0Embedded developmentFilesystem jiaxin2006-tg-rcore-tutorial-sbi-t4Custom T4 SBI fork for rCore tutorial OS: timer forwarding and SMP bring-up support.63GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-sync-t1l5Synchronization primitives for rCore tutorial OS, including mutex, semaphore, and condvar.126GPL-3.0ConcurrencyEmbedded development jiaxin2006-tg-rcore-tutorial-syscall-t3l8Fork of rCore tutorial syscall definitions: framebuffer syscalls, UART input_getchar, lseek on IO trait (chapter 8 / Doom). Does…71GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-syscall-t4Custom T4 syscall fork for rCore tutorial: framebuffer, UART input, kernel interrupt test, and SMP snapshot interfaces.105GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-t1l1Student AI4OSE lab crate for Chapter 3 of rCore Tutorial: multiprogramming and time-sharing multitasking.21GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-t1l2Student AI4OSE lab crate for Chapter 4 of rCore Tutorial: address space management with SV39 virtual memory.20GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-t1l3Student AI4OSE lab crate for Chapter 5 of rCore Tutorial: multiprogramming and time-sharing multitasking.20GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-t1l4Student AI4OSE lab crate for Chapter 6 of rCore Tutorial: multiprogramming and time-sharing multitasking.20GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-t1l5Student AI4OSE lab crate for Chapter 8 of rCore Tutorial: multiprogramming and time-sharing multitasking.21GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-t2l4Student AI4OSE lab crate for Experiment 4 of rCore Tutorial: pluggable scheduler comparison (FCFS, SJF, RR, MLFQ, CFS-like) with…117GPL-3.0AlgorithmsSimulation jiaxin2006-tg-rcore-tutorial-t2l5Student AI4OSE lab crate for Experiment 5 of rCore Tutorial: synchronization primitives (SpinLock, MutexBlocking, Semaphore,…113GPL-3.0AlgorithmsConcurrency jiaxin2006-tg-rcore-tutorial-t3l1Implementation of T3L1: Visualizing tangram 'OS'.19GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-t3l2Implementation of T3L2: Visualizing tangram 'OS' with batch processing system.19GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-t3l8Implemented Doom.21GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-t4Custom T4 rCore tutorial kernel: kernel-interrupt response, SMP scheduling, and Doom integration.17GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-task-manage-t4Custom T4 task/process/thread management for rCore tutorial OS, including per-hart scheduling state.144GPL-3.0Embedded developmentNo standard library jiaxin2006-tg-rcore-tutorial-user-t4Custom T4 user-space apps for rCore Tutorial: interrupt/SMP checks, Doom helpers, and performance benchmarks.18GPL-3.0Embedded developmentNo standard library jibJib is a library for the Solana blockchain that lets you efficiently pack instructions into transactions and submit them via a…27,329Apache-2.0 jicliSimple JIRA client to add worklog time to an issue7,696WTFPL jidA crate which provides a Jid struct for Jabber IDs.128,979MPL-2.0 jid-gst-meetA crate which provides a Jid struct for Jabber IDs.3,929MPL-2.0 jidenSave and retrive state and progress through a system file3,562MIT jidoAI workflow executor17MIT jiebasegment7,726MIT jieba-macrosCollections of proc-macro for jieba-rs1,708,073MITText processing jieba-rsJieba Chinese Word Segmentation in Rust2,974,881MITText processing jieba-rs-siroThe Jieba Chinese Word Segmentation Implemented in Rust3,324MITText processing jiebarsJieba word segmentation rust version implementation2,117MIT jifA version control system54GPL-2.0-or-laterCommand line utilitiesDevelopment tools jiffA date-time library that encourages you to jump into the pit of success. This library is heavily inspired by the Temporal…146,702,425Unlicense OR MITDate and timeNo standard library jiff-cliWIP1,308Unlicense OR MIT jiff-coreLow level datetime primitives for the Jiff library.763,738Unlicense OR MITDate and time jiff-cronA cron expression parser and schedule explorer built with jiff.37,760MIT OR Apache-2.0 jiff-dieselIntegration for Jiff with Diesel.38,572Unlicense OR MITDate and time jiff-icuConversion routines between Jiff and ICU4X.1,430,760Unlicense OR MITDate and time jiff-sqlxIntegration for Jiff with SQLx.117,687Unlicense OR MITDate and time jiff-staticCreate static TimeZone values for Jiff (useful in core-only environments).88,630,675Unlicense OR MITDate and time jiff-tzdbThe entire Time Zone Database embedded into your binary.32,009,103Unlicense OR MITDate and time jiff-tzdb-platformThe entire Time Zone Database embedded into your binary for specific platforms.30,308,655Unlicense OR MITDate and time jiffyHuman-friendly time expressions1,670MIT/Apache-2.0Date and timeValue formatting jigDatabase engine for Gale, the malleable computational medium3,242NOASSERTION jig-clijig - A command line toolbox1,425MITCommand line utilitiesCryptography jig-contractShared contract types and constants for the Jig runtime.158MIT jig-coreCore harness feature metadata for Jig.71MIT jig-dev-proxyInternal local development reverse proxy used by the matching jig-sh CLI release.46MITCommand line utilitiesDevelopment tools jig-featuresFeature registry for Jig contract tools and command keys.47MIT jig-runRun commands with arguments taken from a declarative configuration file.308MITCommand line utilitiesDevelopment tools jig-rustRust feature-area checks and contract metadata for Jig.70MIT jig-shAgent-oriented repository harness and MCP runtime for Rust application repos.43MITCommand line utilitiesDevelopment tools jig-sqlxSQLx feature-area checks and contract metadata for Jig.72MIT jig-typescriptTypeScript feature-area checks and contract metadata for Jig.71MIT jig-vaultLocal encrypted vault and redaction primitives for the jig-sh runtime.55MITCommand line utilitiesCryptography jigawattSquatting this name until it's clear whether I'm allowed to publish this code as open-source1,799MIT-0 jigetest for cargo publish1,128MIT jigglejiggle - A Tiny Program to Jiggle Your Mouse2,397GPL-3.0-only jigglerA cross-platform CLI tool to jiggle mouse and press keys to prevent screen lock.1,140MITCommand line utilitiesOperating systems jiggyMinimalistic cross-platform mouse jiggler written in Rust.7,121MITCommand line utilities jigsawA library for creating and loading runtime plugins.1,165MIT jigsaw_puzzle_generatorLibrary for generating jigsaw puzzle images3,600MIT OR Apache-2.0Game developmentGraphics jiguang-certification极光认证登录SDK, JiGuang Certification SDK3,089MIT jikana task scheduling library1,563non-standard jikan-rsA basic wrapper for jikan.moe API711MITAPI bindingsWeb programming jikan_moeJikan-Rust is an Rust wrapper for the Jikan API, an open-source API for MyAnimeList. This library allows you to seamlessly…2,711MIT jikji-agentAgent skill export and routing helper scaffolding for Jikji.29MIT jikji-cliCommand-line entry point for Jikji.19MIT jikji-coreShared types, errors, path policy, and generated artifact constants for Jikji.66MIT jikji-indexScanning and artifact-generation scaffolding for Jikji indexes.29MIT jikji-media-bridgeOptional media bridge API scaffolding for Jikji OCR and ASR integrations.38MIT jikji-parserParser trait and registry scaffolding for reusable Jikji document parsing.36MIT jikji-searchReusable Jikji search, graph, brief, and answer-pack contracts.32MIT jikkenJikken is a CLI tool for automated API testing. It utilizes JKT files (Jikken Test Definitions) to execute jobs for testing REST…16,746MITCommand line utilitiesDevelopment tools jikyuuEstimate the amount of time you've spent working on a Git repository4,250MITCommand line utilities jillAn alternative Rust crate registry.747AGPL-3.0-onlyCommand line utilitiesWeb programming jiluGenerate a change log based on conventional commits.9,440MIT OR Apache-2.0Command line utilitiesDevelopment tools jimNamed configuration management for vim4,645MIT jim-rsImmediate mode JSON serialization library607MITEncoding jimageSafe bindings to jimage.dll, allowing you to read jimage format 'modules' files from AdoptOpenJDK containing class metadata,…10,222MIT OR Apache-2.0API bindings jimage-rsA fast and efficient Rust library for working with jimage files used by the Java Platform Module System.4,307MITCommand line utilitiesParser implementations jimage-sysRaw FFI bindings to jimage.dll, allowing you to read jimage format 'modules' files from AdoptOpenJDK containing class metadata,…4,516BSD-3-ClauseExternal FFI bindings jimakuA subtitle downloader4,830MIT jimberlage_jira_clientProvides a REST client to access the JIRA V3 API. It aims to be complete, but is not yet; should only be used if you have the…4,461MIT jimblandy-yank-testTesting 'cargo yank' behavior.4,356Apache-2.0 jimblandy-yank-test2Testing 'cargo yank' behavior.3,101Apache-2.0 jimboOnly here for testing publishing to crates.io1,482MIT jiminyThe zero-copy standard library for Solana programs built on Hopper Runtime. Account layout, validation, PDA, Token/Mint readers,…331Apache-2.0Embedded developmentNo standard library jiminy-anchorAdapter for reading Anchor-framework accounts from Jiminy programs. Provides Anchor discriminator utilities and account header…63Apache-2.0Embedded developmentNo standard library jiminy-coreCore systems layer for Jiminy: account layout, zero-copy IO, validation, PDA, sysvar access, math, time checks. Declarative…586Apache-2.0Embedded developmentNo standard library jiminy-distributeDust-safe proportional distribution helpers for Jiminy: N-way splits and fee extraction. Zero-copy, no_std, no_alloc, BPF-safe.221Apache-2.0Embedded developmentNo standard library