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.

jamsocket-wasmThis repo has been renamed to stateroom-wasm.6,557MIT OR Apache-2.0 jamsocket-wasm-hostThis repo has been renamed to stateroom-wasm-host.7,958MIT OR Apache-2.0 jamsocket-wasm-macroThis repo has been renamed to stateroom-wasm-macro.5,329MIT OR Apache-2.0 jamtGeneral CLI tool for interacting with JAM nodes3,546Apache-2.0 jamtopA version of the classic Unix CLI utility top but for a JAM instance3,622Apache-2.0 janjan1,702MIT OR Apache-2.0 jan-cliYAML-defined CLI trees with progressive help, optional exec aliases, merged extra specs, and SQLite audit logging keyed by git…38MIT jandering_engineBare bones rendering framework3,424MPL-2.0 jandi-colorsColor palette derived from the blue pigment of jenipapo (Genipa americana)53MITGUINo standard library::No dynamic allocation jandomPort of java.util.Random9,513MIT OR Apache-2.0Algorithms jane-eyreBy Currer Bell19,976MIT OR Apache-2.0Rust patterns janetHigher level janet bindings.1,888non-standard janet-llLow level bindings to the janet language c api.1,882non-standard janet-rs-sysRaw Rust bindings to the Janet Programming Language1,579MIT janet-sysLow-level bindings to janet1,925GPL-2.0-or-later janetrsHigh level binding for Janet programming language21,523non-standardAPI bindings janetrs_macrosAttribute macros for JanetRS27,734non-standardDevelopment tools::Procedural macro helpers janetrs_versionJanet version types for JanetRS8,391non-standard jangalImplementation of Tree Data Structures in Rust2,656MIT janggabTHis is janggab1,258Apache-2.0 janggab-coreTHis is janggab core1,097Apache-2.0 janggab-setupTHis is janggab setup485Apache-2.0 jangoA CLI program to populate your templates15,773UnlicenseCommand line utilities janiceA file sync tool that refuses to waste your time104MITCommand line utilitiesFilesystem janitorperform cleanup after a program exits1,885non-standardCommand line utilities janitor-botThis is a bot that removes users trying to join to a chat that is designed for comments.1,698GPL-3.0 janitor-serviceA service that cleans up your downloads folder41,583MIT jankensqlhubA high-performance, modular Rust library for parameterizable SQL query management with support for SQLite and PostgreSQL3,131MITDatabase interfacesDatabase implementations jankenstoreDatabase operation helpers library17,776MITDatabase interfaces jankiJanky Anki4,014MITCommand line utilitiesGUI JanlibSimulate key press and mouse movement on macOS143MIT janqlJanQL is a lightweight, persistent key-value store written in Rust.175MIT jansson-sysNative bindings for Jansson, the C JSON library.13,967MPL-2.0 jantuJantu — ethology and creature behavior engine for instinct, survival, social dynamics, and swarm intelligence479GPL-3.0-onlyGame enginesScience januaryFiller for now. Game Engine later.1,515MIT janusJanus is an abstraction for synchronous/asynchronous message publishing and consumption.5,482MIT OR Apache-2.0 janus-kafkaKafka backend for Janus.11,441MIT OR Apache-2.0 janus-pluginLibrary for creating plugins for Janus, the WebRTC gateway.35,389MPL-2.0 janus-plugin-sysNative bindings to the Janus plugin API.21,174MPL-2.0 janus_clientClient for Janus, the server powering ISRG's Divvi Up.282,916MPL-2.0 janus_collectorCollector for Janus, the server powering ISRG's Divvi Up.272,627MPL-2.0 janus_coreCore type definitions and utilities used in various components of Janus.288,739MPL-2.0 janus_messagesDistributed Aggregation Protocol message definitions used in Janus, the server powering ISRG's Divvi Up.324,563MPL-2.0 jaoDiscover and run workspace scripts from a simple CLI125Apache-2.0Command line utilitiesDevelopment tools jaocA CLI tool to scaffold, run, and watch Advent of Code projects in Rust.40MITCommand line utilitiesDevelopment tools japan-demA CLI tool to convert Japan DEM XML to GeoTIFF.1,968MITCommand line utilitiesScience::Geospatial japan-geoidCalculates geoid heights for Japan using GSI's geoid model.18,824MITScienceScience::Geospatial japan-reverse-geocoder国土交通省の位置参照情報(大字・町丁目レベル)を同梱した日本の逆ジオコーディングライブラリ / Offline reverse geocoding for Japan using MLIT location reference data21MIT OR Apache-2.0Data structuresScience::Geospatial japaneseRecognize the different Japanese scripts and convert between hiragana/katakana.6,110MIT japanese-address-parserA library for processing addresses of Japan70,265MITParser implementationsWebAssembly japanese-address-parser-mcpMCP server for japanese-address-parser — parsing addresses with natural language instructions113MITParser implementationsWebAssembly japanese-codepointsA high-performance Rust library for Japanese character validation and code point handling based on JIS standards438MIT OR Apache-2.0Internationalization (i18n)Text processing japanese-ruby-filterJapanese ruby notation parser2,567Apache-2.0/MITText processing japanese-text日本語テキスト正規化ライブラリ - 文字幅、かな、Unicode、句読点、旧字体の正規化196MIT OR Apache-2.0Internationalization (i18n)Text processing japanese_law_id日本の法令IDの解析378MITParsing tools japanese_law_xml_schema法令標準XMLスキーマ対応ライブラリ12,613MIT japanese_number_converterA lib to convert numbers into japanese2,322MIT japanmeshUtilities for Japanese Grid Square Code (JIS X 0410:2002 地域メッシュコード)1,310MIT japhonexJapanese phone number checker for Rust3,376MITText processing japiAn implementation of JSON:API8,444GPL-3.0 jaqJust another JSON query tool118,491MITCommand line utilitiesCompilers jaq-allRun & compile jq filters and read & write data67,800MIT jaq-coreInterpreter for the jaq language2,902,240MITCompilersParser implementations jaq-fmtsMulti-format support for jaq68,405MIT jaq-interpretInterpreter for the jaq language936,609MITCompilers jaq-jsonJSON values for jaq1,898,070MITData structures jaq-parseParser for the jaq language1,006,463MITParser implementations jaq-stdStandard library for jaq2,879,481MIT jaq-synParser for the jq language937,964MITParser implementations jarFaster-than-JAM blockchain implementation.21GPL-3.0-or-later WITH Classpath-exception-2.0 jar-genesisThe Genesis bot for JAR.19Apache-2.0 jar-kernelMicrokernel for jar.16Apache-2.0 jar_conflict_detecterA simple command line tool to detector the potential conflicted classes in jars2,249MIT OR Apache-2.0Command line utilities jar_conflict_detectorA simple command line tool to detector the potential conflicted classes in jars1,532MIT OR Apache-2.0Command line utilities jaraA Java Runtime Manager.5,253MITCommand-line interfaceDevelopment tools jarbesJarbes is a library and a command program that can be instructed to automate repetitive routines on a computer environment.1,637LGPL-3.0-only jaredh159-test-adderA simple adder function1,902MIT jaredh159-test-adder-cliA simple CLI that adds 2 and 21,514MIT jargjson parser with re::bad_reqesut11,092MulanPSL-2.0 jargonCommand line tool for displaying a random entry from the Jargon File.19,064MPL-2.0 jargon-argsA simple but smart command line parser25,428MIT jargoncliView the jargon file in a terminal1,879GPL-3.0-or-later jaridaA minimalist, encrypted journaling tool4,212GPL-3.0-or-laterCommand line utilities jarielA mermaid diagram generator for Juju charms1,165Apache-2.0 jarkdownExport Jira Cloud issues to Markdown with attachments158MITCommand line utilities jarkup-rsA JSON-based intermediate markup language for component representation.5,641MIT jarlJarl (Just another Raft library)5,144Apache-2.0 jarm_rsgenerate a JARM fingerprint for a domain8,837MIT jarnA package manager for jaseci applications1,529MITCommand line utilities jaro_winklerFast implementation of Jaro-Winkler for comparing two strings59,851MITAlgorithmsText processing jarqAn interactive jq-like JSON query tool with a TUI471non-standard jarsA simple jar extraction library44,966MIT jarsgrepJust Another Rust-based grep-like CLI tool.1,471MIT jarsignerJAR signing library compatible with jarsigner API196MITCryptographyDevelopment tools jarteFile Packaging1,500MIT jaruJust another request utility 🦀😺2,558BSD-3-Clause OR Apache-2.0 jarustA janus client SDK in Rust42,543Apache-2.0AsynchronousConcurrency jarust_coreA janus client SDK in Rust17,357Apache-2.0AsynchronousConcurrency jarust_interfaceA janus client SDK in Rust18,608Apache-2.0AsynchronousConcurrency jarust_make_pluginA janus client SDK in Rust17,844MITAsynchronousConcurrency jarust_pluginsA janus client SDK in Rust42,887Apache-2.0AsynchronousConcurrency jarust_rtA janus client SDK in Rust25,093Apache-2.0AsynchronousConcurrency jarust_transportA janus client SDK in Rust5,962Apache-2.0AsynchronousConcurrency jarvisA framework-agnostic task runner for the command line4,323non-standard jarvis-cliJ.A.R.V.I.S.19MITCommand line utilities jarvis-rustAn intelligent assistant in pure rust.1,571GPL-2.0-or-later WITH Bison-exception-2.2 jarvishNext Generation AI Integrated Shell inspired by J.A.R.V.I.S. on Marvel's Iron Man386MIT OR Apache-2.0Command line utilities jarvyJarvy is a fast, cross-platform CLI that installs and manages developer tools across macOS and Linux.247MIT OR Apache-2.0Command line utilitiesDevelopment tools jarvy-templatesShared tool-scaffold template + validation for jarvy and cargo-jarvy. No runtime deps so dependents stay light.112MIT OR Apache-2.0 jaryloA shell for easier manipulation of glium4,903Apache-2.0Graphics jasJust an installer3,914MITCommand line utilities jascaImplementation of the XMPP Testing framwork “Scansion” in Rust179MPL-2.0 jascpalRead and write JASC palette files.6,347GPL-3.0 jaslogA colored log reader for JSON logs12,032Apache-2.0Command line utilities jasmAn assembler for the JDH-8 architecture.1,512MIT jasm-assemblerModern assembler for JVM instruction set - strongly typed, object-oriented, zero-dependency core1,183MPL-2.0Compilers jasmineStoring data like it's tea1,638Apache-2.0/MIT jasmine-dbJasmine is a scalable cache with clock replacement policy. The cache size and grow and shrink on demand.1,561MIT jasnA Rust library for parsing and formatting JASN (Just Another Serialization Notation)23MITEncoding jasn-coreCore data types for JASN and JAML serialization formats170MITData structuresEncoding jasojaso normalizes filenames to their Unicode NFC format in parallel, and is much faster than convmv(1).2,536Apache-2.0 OR MITCommand line utilities jasonJSON-RPC 2.0 client library3,084MIT jason-minigrep一个用来检索文件内容的命令行工具.2,925MIT OR Apache-2.0 jason-rsA library for parsing Jason-like files into JSON, YAML, or TOML with support for inline file expansion.1,225Apache-2.0EncodingParser implementations jasondbA Blazingly-Fast, JSON-Based, Log-Structured Database.15,828MITDatabase interfacesDatabase implementations jasonisnthappyA lightweight, embedded document database with ACID transactions and MVCC support98MITData structuresDatabase interfaces jasonqwu测试1,679MIT jasonrpcLightweight, transport-agnostic, spec-conforming JSON-RPC 2.0 for Rust114BSD-2-ClauseEncodingNetwork programming jasonruanjason study rust from now on...1,693Apache-2.0 jasperA simple RFC 8259-compliant JSON encoder and decoder2,771MIT OR Apache-2.0Encoding jasper-coreJoplin sync-format core: model, parser, serializer, in-memory index (no IO; portable to WASM)104MIT OR Apache-2.0Parser implementationsText processing jasper-plugin-sdkJasper plugin SDK: ABI glue (plugin_dispatch/host_call), typed host wrappers, storage trait, notes/ai + system.locale host APIs,…123MIT OR Apache-2.0API bindingsWebAssembly jassbotthe jassdoc API for matrix.org4,130MIT OR Apache-2.0 jastminimalist backend framework to practice1,568MIT jast_libminimalist backend framework to practice2,991MIT jatTesting library for jam programs646GPL-3.0 jatchLibrary for performing JSON patching3,337MIT jatslJob and task scheduling library14,216MIT jaudioA low-level interface for working with audio files2,869MIT OR Apache-2.0MultimediaMultimedia::Audio jaustJava ecosystem tools in rust a learning project3,324MIT javjav108MIT javaA package with Java class wrappers generated using rust-jni-generator crate.2,088MIT java-analyzerA Java language server, implemented in Rust, for IDEs1,292MIT OR Apache-2.0 java-ast-parserA Java parser that produces a typed AST without initializers and function bodies177MITParser implementations java-bin-nameJava binary name parser and writer57LGPL-3.0-or-laterParsing tools java-bindgen☕ + 🦀 = ❤️‍🔥 Java JNI Bindings Generator4,830MITAPI bindings java-bindgen-coreJava Bindgen | Core5,803MITAPI bindings java-bindgen-macroJava Bindgen | Macro5,143MITAPI bindings java-buildCompile Java source for inclusion in packages478MIT java-class-rsJava class file format parser written in Rust233MITDevelopment toolsParser implementations java-descA library for parsing java field and method signatures Ex: "[[Ljava/lang/Object;", "(I[B)Z;"3,251MITParsing tools java-jni-extrasA collection of helper macros for use with jni164MIT java-langA Java AST parser in Rust, syn-style API for Java 25 (JLS SE 25)925MIT OR Apache-2.0Parser implementations java-locatorLocates a Java installation in the host.5,775,739MIT/Apache-2.0 java-managerA Rust library for managing and locating Java installations180MIT OR Apache-2.0Development tools java-oxideGlue code to accompany `java-oxide-gen` for binding to JVM APIs from Rust155MITExternal FFI bindings java-oxide-genCode generator for binding to JVM APIs from Rust41MITDevelopment tools::FFI java-pack☕ + 🦀 = ❤️‍🔥 Java JNI Bindings Generator4,398MITAPI bindings java-propertiesA library for reading and writing Java properties files in Rust.4,920,015MIT java-propsThis crate is designed to parse and modify .properties files, which are frequently used by Java applications.5,302MIT/Apache-2.0 java-randImplementation of java.util.Random10,702MIT java-runtimesA library for detecting java runtimes in current system.2,762non-standard java-serializationJava object serialization stream parser written in Rust157MITEncodingParser implementations java-signaturesjava classfile signatures parser2,4960BSD java-spaghettiGlue code to accompany the java-spaghetti code generator for binding to JVM APIs from Rust106,407MIT OR Apache-2.0External FFI bindings java-spaghetti-genCode generator for binding to JVM APIs from Rust390MIT OR Apache-2.0Development tools::FFI java-threadpool这是一个跟java ThreadPoolExecutor线程池 使用方式基本相同的线程池4,218Apache-2.0AccessibilityAsynchronous java-utilsImplementations of Java classes in pure Rust6,183MIT java2pyiJava source to Python stubs for mypy/pyright136MITCommand line utilities java_asmJava bytecode reader & writer in rust14,523Apache-2.0 java_asm_eguiJava bytecode reader & writer in rust4,562Apache-2.0 java_asm_internalJava bytecode reader & writer in rust5,041Apache-2.0 java_asm_macroJava bytecode reader & writer in rust15,168Apache-2.0 java_asm_serverJava bytecode reader & writer in rust5,044Apache-2.0 java_class_parserprovides a way of easily parsing and analyzing java classes2,930MIT OR Apache-2.0 java_classpathsProvides useful functions and mechanisms for inspecting java classpaths1,580MIT OR Apache-2.0 java_data_io_rsJava Data IO Format Reader/Writer1,829MIT java_decompiler_ollamaJava decompiler using Ollama and javap931MIT java_randomThe java LCG and random module implementation in rust18,628MITAlgorithmsData structures java_regexRust implementation of Java's java.util.regex.Pattern, byte-for-byte compatible with OpenJDK19MIT OR Apache-2.0No standard libraryParser implementations java_runtimeAn additional crate for j4rs, providing jre8.2,737MIT OR Apache-2.0 java_stringAn implementation of Java strings, tolerant of invalid UTF-16 encoding7,373MIT javabcJava bytecode manipulation library3,994MIT javacA build-time dependency for Cargo build scripts and unit tests to assist in invoking the native Java compiler to compile Java…2,719MIT OR Apache-2.0Development tools::Build Utils javaclass-rsA java class file parser written in pure rust.2,648GPL-3.0-or-later javadec-rsA java decompiler written in pure rust.1,718GPL-3.0-or-later javadscrateA crate to practice on cargo features282MIT OR Apache-2.0 javalocateCommand line utility to find JVM versions on macOS, Linux and Windows13,685Apache-2.0 javamcCross-platform CLI to download and run the official Mojang Java runtimes bundled with Minecraft.19MITCommand line utilitiesGames javarrun .jar files on double-click (windows only)417MIT javarandomPure rust implementation of java.util.Random5,590UnlicenseAlgorithms javarsJava as a fusevm frontend: a lexer/parser and compiler to fusevm::Chunk — Java source lowered to bytecode and run on the shared…11MITCommand line utilitiesCompilers javascriptA JavaScript engine implementation in Rust475MITDevelopment toolsParsing tools javascript-globalsGlobal identifiers from different JavaScript environments300,351MIT javascript-melMélodium JavaScript language library10,972EUPL-1.2AsynchronousCompilers javascript_lexerJavascript lexer13,291MITParser implementations javascriptcoreBindings to the JavaScriptCore framework.9,765MIT OR Apache-2.0API bindings javascriptcore-macrosProcedural macros for the `javascriptcore` crate.1,881MIT OR Apache-2.0External FFI bindings javascriptcore-rsRust bindings for the javacriptcore library16,974,036MIT javascriptcore-rs-sysSys functions for the Rust bindings of the javacriptcore library17,120,919MIT