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.
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)53MIT
jandomPort of java.util.Random9,513MIT OR Apache-2.0
jane-eyreBy Currer Bell19,976MIT OR Apache-2.0
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-standard
janetrs_macrosAttribute macros for JanetRS27,734non-standard
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 templates15,773Unlicense
janiceA file sync tool that refuses to waste your time104MIT
janitorperform cleanup after a program exits1,885non-standard
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 PostgreSQL3,131MIT
jankenstoreDatabase operation helpers library17,776MIT
jankiJanky Anki4,014MIT
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-only
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-2.0
jaocA CLI tool to scaffold, run, and watch Advent of Code projects in Rust.40MIT
japan-demA CLI tool to convert Japan DEM XML to GeoTIFF.1,968MIT
japan-geoidCalculates geoid heights for Japan using GSI's geoid model.18,824MIT
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-2.0
japaneseRecognize the different Japanese scripts and convert between hiragana/katakana.6,110MIT
japanese-address-parserA library for processing addresses of Japan70,265MIT
japanese-address-parser-mcpMCP server for japanese-address-parser — parsing addresses with natural language instructions113MIT
japanese-codepointsA high-performance Rust library for Japanese character validation and code point handling based on JIS standards438MIT OR Apache-2.0
japanese-ruby-filterJapanese ruby notation parser2,567Apache-2.0/MIT
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-2.0
japanese_law_id日本の法令IDの解析378MIT
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 Rust3,376MIT
japiAn implementation of JSON:API8,444GPL-3.0
jaqJust another JSON query tool118,491MIT
jaq-allRun & compile jq filters and read & write data67,800MIT
jaq-coreInterpreter for the jaq language2,902,240MIT
jaq-fmtsMulti-format support for jaq68,405MIT
jaq-interpretInterpreter for the jaq language936,609MIT
jaq-jsonJSON values for jaq1,898,070MIT
jaq-parseParser for the jaq language1,006,463MIT
jaq-stdStandard library for jaq2,879,481MIT
jaq-synParser for the jq language937,964MIT
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-2.0
jar_conflict_detectorA simple command line tool to detector the potential conflicted classes in jars1,532MIT OR Apache-2.0
jaraA Java Runtime Manager.5,253MIT
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-later
jarielA mermaid diagram generator for Juju charms1,165Apache-2.0
jarkdownExport Jira Cloud issues to Markdown with attachments158MIT
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 applications1,529MIT
jaro_winklerFast implementation of Jaro-Winkler for comparing two strings59,851MIT
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 API196MIT
jarteFile Packaging1,500MIT
jaruJust another request utility 🦀😺2,558BSD-3-Clause OR Apache-2.0
jarustA janus client SDK in Rust42,543Apache-2.0
jarust_coreA janus client SDK in Rust17,357Apache-2.0
jarust_interfaceA janus client SDK in Rust18,608Apache-2.0
jarust_make_pluginA janus client SDK in Rust17,844MIT
jarust_pluginsA janus client SDK in Rust42,887Apache-2.0
jarust_rtA janus client SDK in Rust25,093Apache-2.0
jarust_transportA janus client SDK in Rust5,962Apache-2.0
jarvisA framework-agnostic task runner for the command line4,323non-standard
jarvis-cliJ.A.R.V.I.S.19MIT
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-2.0
jarvyJarvy is a fast, cross-platform CLI that installs and manages developer tools across macOS and Linux.247MIT OR Apache-2.0
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-2.0
jasJust an installer3,914MIT
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-2.0
jasmAn assembler for the JDH-8 architecture.1,512MIT
jasm-assemblerModern assembler for JVM instruction set - strongly typed, object-oriented, zero-dependency core1,183MPL-2.0
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)23MIT
jasn-coreCore data types for JASN and JAML serialization formats170MIT
jasojaso normalizes filenames to their Unicode NFC format in parallel, and is much
faster than convmv(1).2,536Apache-2.0 OR MIT
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-2.0
jasondbA Blazingly-Fast, JSON-Based, Log-Structured Database.15,828MIT
jasonisnthappyA lightweight, embedded document database with ACID transactions and MVCC support98MIT
jasonqwu测试1,679MIT
jasonrpcLightweight, transport-agnostic, spec-conforming JSON-RPC 2.0 for Rust114BSD-2-Clause
jasonruanjason study rust from now on...1,693Apache-2.0
jasperA simple RFC 8259-compliant JSON encoder and decoder2,771MIT OR Apache-2.0
jasper-coreJoplin sync-format core: model, parser, serializer, in-memory index (no IO; portable to WASM)104MIT OR Apache-2.0
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-2.0
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-2.0
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 bodies177MIT
java-bin-nameJava binary name parser and writer57LGPL-3.0-or-later
java-bindgen☕ + 🦀 = ❤️🔥 Java JNI Bindings Generator4,830MIT
java-bindgen-coreJava Bindgen | Core5,803MIT
java-bindgen-macroJava Bindgen | Macro5,143MIT
java-buildCompile Java source for inclusion in packages478MIT
java-class-rsJava class file format parser written in Rust233MIT
java-descA library for parsing java field and method signatures
Ex: "[[Ljava/lang/Object;", "(I[B)Z;"3,251MIT
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-2.0
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-2.0
java-oxideGlue code to accompany `java-oxide-gen` for binding to JVM APIs from Rust155MIT
java-oxide-genCode generator for binding to JVM APIs from Rust41MIT
java-pack☕ + 🦀 = ❤️🔥 Java JNI Bindings Generator4,398MIT
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 Rust157MIT
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-2.0
java-spaghetti-genCode generator for binding to JVM APIs from Rust390MIT OR Apache-2.0
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-2.0
java-utilsImplementations of Java classes in pure Rust6,183MIT
java2pyiJava source to Python stubs for mypy/pyright136MIT
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 rust18,628MIT
java_regexRust implementation of Java's java.util.regex.Pattern, byte-for-byte compatible with OpenJDK19MIT OR Apache-2.0
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-2.0
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.19MIT
javarrun .jar files on double-click (windows only)417MIT
javarandomPure rust implementation of java.util.Random5,590Unlicense
javarsJava as a fusevm frontend: a lexer/parser and compiler to fusevm::Chunk — Java source lowered to bytecode and run on the shared…11MIT
javascriptA JavaScript engine implementation in Rust475MIT
javascript-globalsGlobal identifiers from different JavaScript environments300,351MIT
javascript-melMélodium JavaScript language library10,972EUPL-1.2
javascript_lexerJavascript lexer13,291MIT
javascriptcoreBindings to the JavaScriptCore framework.9,765MIT OR Apache-2.0
javascriptcore-macrosProcedural macros for the `javascriptcore` crate.1,881MIT OR Apache-2.0
javascriptcore-rsRust bindings for the javacriptcore library16,974,036MIT
javascriptcore-rs-sysSys functions for the Rust bindings of the javacriptcore library17,120,919MIT