All 305,250 crates, alphabetically

expectorateLibrary for comparing output to file contents with simple updating1,475,820Apache-2.0Development tools::Testing expectrlA tool for automating terminal applications in Unix like Don libes expect564,169MITDevelopment tools::TestingOperating systems::Unix APIs expedioGmail inbox processing — read, surface, clear.22MITCommand line utilities expediteRust Common toolset3,349MIT/Apache-2.0 expeditionRich text styling and formatting library5,120MIT OR Apache-2.0Game developmentGUI expeditionosA small CPU game to play with fictional hardware.7,640CC-BY-NC-ND-4.0 expense-trackerexpense-tracker is a cli based tool to track expenses.135non-standardCommand line utilities expensiveTerminal dashboard for AI coding harness token usage and spend212MITCommand line utilities experi-codecLightweight, efficient, binary serialization and deserialization codec1,398Apache-2.0Encoding experi-codec-deriveSerialization and deserialization derive macro for Susy Codec1,411Apache-2.0 experience-rsUtilities to help Actuaries monitor experience in Rust (i.e. perform experience studies).41Apache-2.0 experimentA Rust library for carefully refactoring critical paths.903MIT experiment-cargo-prerelease-semverDoes Cargo consider 1.0.0 to be semver-compatible with 1.0.0-beta ?2,699MIT experiment-codecLightweight, efficient, binary serialization and deserialization codec1,406Apache-2.0Encoding experiment-codec-deriveSerialization and deserialization derive macro for Susy Codec1,466Apache-2.0 experimental-glide-core-libCore client library for Valkey GLIDE48Apache-2.0Database interfaces experimental-glide-core-rs-dependencyRedis driver for Rust.38BSD-3-Clause experimental-glide-logger-coreLogging core for Valkey GLIDE78Apache-2.0Development tools::Debugging experimental-glide-telemetrylibTelemetry (metrics and tracing) library for Valkey GLIDE69Apache-2.0Development tools::Profiling experimental-reactiveExperimental overheadless reactive programming framework5,919MIT/Apache-2.0 experimental-testexperimental10,909GPL-3.0 experimental-tree-sitter-swiftswift grammar for the tree-sitter parsing library4,679MITParsing toolsText editors expertA cache-friendly, typesafe expert/business rules system2,077MIT/Apache-2.0AlgorithmsData structures expiration_dateA professional financial instrument expiration date management library with support for standard day count conventions.29,895MITDate and timeFinance expiration_listA datastructure for items that expire.73MIT OR Apache-2.0 expiredata structure for data maybe expired3,978MIT OR Apache-2.0 expire_cacheHigh-performance generational cache for Rust / 高性能分代缓存3,953MulanPSL-2.0AsynchronousCaching expire_mapexpire map and retry map33,923Apache-2.0 expire_setHigh-performance concurrent expiration set using unsafe raw pointers / 基于非安全原始指针的高性能并发过期集合737MulanPSL-2.0AlgorithmsCaching expiremapA simple Key-Value map where each value has a custom expiry time.3,812MIT OR Apache-2.0Data structures expiring-atomic-filterThread-safe approximate membership filter with time-based expiration.58MITData structures expiring_mapA map whose entries expire after a configured time to live19,921MIT OR Apache-2.0 expiringdictA dict / HashMap whose items expire over time2,108BSD-3-ClauseData structures expiringmapa HashMap-backed TTL map27,636Apache-2.0 OR MITData structures expjobserverThis is a job server and client for running many experiments across many test platforms. In some sense, it is like a simple…12,336MIT/Apache-2.0Science explainThis binary is for a future implementation of explain.rs1,825MIT explain-build-coreCore stable-first session capture and analysis for cargo-explain-build87MIT OR Apache-2.0 explainableA zero-overhead educational layer for Rust libraries.74MIT explainable-macrosProcedural macros for the explainable crate.102MIT explaincronA tool to explain cron schedules2,758MITCommand line utilities explainerExplain a given word, including its pronunciation, meanings, and sample sentences.1,713MIT explicit-discriminantMacro for enforcing enum discriminants18,022non-standardData structures explicit-endianTransparent traits to explicitely declare in-memory endianness for a virable or struct record10,245MPL-2.0 explicit-errorExplicit concrete Error type for binary crates6,957Apache-2.0Rust patterns explicit-error-deriveDerives for crates built on top of explicit-error6,117Apache-2.0Rust patterns explicit-error-exitExplicit concrete Error type to manage errors that end a process/program2,852Apache-2.0Rust patterns explicit-error-httpExplicit concrete Error type to manage and monitor errors that generate an HTTP response. It has dedicated feature flag to…5,487Apache-2.0Rust patterns explicit_castA crate for explicit widening, truncating, and sign casting of primitive integers25,344Apache-2.0 OR MITNo standard library::No dynamic allocationRust patterns explicit_tracing_perfettoTracing layer for recording explicit timeline events in Perfetto trace format.114MITDevelopment tools::DebuggingDevelopment tools::Profiling expliconConfiguration without surprises1,179MITConfiguration explomoto - motivated automation1,462MIT explodeA decompression implementation for the implode algorithm from the PKWARE Data Compression Library.14,552MITCompressionEncoding ExploitBuilderA exploit builder for quick exploit development1,810non-standard exploraA small, friendly, terminal file explorer written in rust.24MIT exploreterminal file explorer4,525MIT explore-osAn actor system exposed as filesystem247MIT OR Apache-2.0 expmAn implementation of the expm matrix exponential function by Higham and Al-Mohy, 20093,450MIT OR Apache-2.0Science expmanHigh-performance experiment manager with Rust backend664MIT expman-coreCore logic and storage engine for expman101MIT expman-serverWeb server and dashboard for expman367MIT expoUnit-test compiler invocations1,001MIT OR Apache-2.0 expo-module-macroProcedural macros for defining Expo modules in Rust98MIT expo-modules-rsRust SDK for writing Expo native modules via direct JSI integration48MITAPI bindingsDevelopment tools expo-server-sdkServer side library for working with Expo using Rust. Includes a client to send push notifications to users of your mobile app…6,227MITAPI bindingsWeb programming expo_push_notification_clientExpo Push Notification Client for Rust74,936MIT OR Apache-2.0API bindingsWeb programming exponent-amm-exchange-rateAMM exchange rate utility for Exponent markets.1,719AGPL-3.0 exponent-time-curveTime-based AMM curve.11,458AGPL-3.0 exponential-backoffAn exponential backoff generator with jitter.2,916,456MIT OR Apache-2.0AlgorithmsDate and time exponential-decay-histogramA histogram which exponentially weights in favor of recent values668,540MIT OR Apache-2.0Data structures exponential-histogramAuto-scaling approximate histogram20,597Apache-2.0Development tools::ProfilingWeb programming exponential-integralThe exponential integral function, a.k.a. Ei.4,012GPL-3.0+Data structuresDevelopment tools exportexport1,353Apache-2.0 AND MIT export-aptos-verifierCLI for exporting Groth16 artifacts to Aptos Move verifier packages.108MITCommand line utilitiesCryptography export-aptos-verifier-coreLoad Groth16 artifacts from snarkjs, Gnark, SP1, and Arkworks inputs and generate Aptos Move verifier packages.135MITCryptography export-cef-dirExport pre-built CEF (Chromium Embedded Framework) archives.34,071Apache-2.0 OR MIT export-engineExport and serialization engine for metrics and events produced by the Peek tool88MITCommand line utilitiesOperating systems::Linux APIs export-ffxiv-macrosA CLI utility for exporting Final Fantasy XIV macros to TOML.1,679Apache-2.0Command line utilitiesEncoding export-kindleExport Kindle book list to JSON or YAML2,711MIT OR Apache-2.0 export-magicA crate to simplify module management and re-exportation using macros.64,937MITDevelopment tools export-resolverA PE (Portable Executable) parser which will dynamically resolve virtual addresses of functions loaded in a PE. It will store…7,314MIT export-sui-verifierCLI for exporting Groth16 artifacts to Sui Move verifier packages.59MITCommand line utilitiesCryptography export-sui-verifier-coreLoad Groth16 artifacts from snarkjs JSON or Arkworks bundles and generate Sui Move verifier packages.78MITCryptography export-typeExport Rust types to other languages12,498MIT export_cstrProvides a macro for exporting constant, null-terminated, C strings from dynamic libraries8,151MIT ExportandoApiA fun game where you guess what number the computer has chosen.2,036MIT OR Apache-2.0 exporterContrail exporter for filtered JSONL datasets146MIT exportingA fun game where you guess what number the computer has chosen.1,293MIT OR Apache-2.0 exposeExpose your rust API for use in a C++ codebase.3,327MIT expose-rsJust exposes your port to public4,392MITNetwork programming exposedExposed is a cross-platform window management library.3,046Apache-2.0 exposed-glOpenGl context creation for library "exposed".1,506Apache-2.0 exposed-macroContains macros required by "exposed"2,248MIT OR Apache-2.0 exprA simple expression parser.3,590 expr-childChild repo (expr)3,113MIT expr-langImplementation of expr language in Rust168,378MIT expr-parentParent repo (expr)1,762MIT expr-solverSolves a mathematical expression while following precedence and associativity.6,171MITCompilersParser implementations expr-solver-binBinary using the expr-solver-lib to solve math expressions from command line1,227MITMathematicsParser implementations expr-solver-libMathematical expression evaluator with bytecode compilation and configurable numeric precision (f64 or 128-bit Decimal)1,654MITMathematicsParser implementations expr_parserA lexer and parser of simple arithmetic expressions.1,867MIT expr_rsA safe and simple math evaluator for Rust and Python.1,649MITParsing tools expr_toolsSome tools that are 'internal' for now because they are insufficiently refined and unstable, but which are used by other 'public'…8,746MIT expressCompatible node express API web Framework for Rust4,180MIT express-relayPyth Express Relay program for handling permissioning and bid distribution10,177Apache-2.0 express-relay-api-typesPyth Express Relay api types10,804Apache-2.0 express-relay-clientPyth Express Relay client13,241Apache-2.0 express-rsExpress.js clone written in your favorite language8,002MIT/Apache-2.0 expressionImplements expression terms and conditions17,567MIT expression-closed01Expression terms in the closed [0,1] interval6,035MIT expression-formatterInsert complex expressions directly into format strings.1,044MIT expression-numNumerical expression implementation based on expression-rs11,604MIT expression_coreCore functionality for mathematical expression parsing1,226MITMathematicsParsing tools expression_engineAn expression engine written in pure rust12,448Apache-2.0 expression_engine_ltsAn expression engine written in pure rust (LTS)1,911Apache-2.0 expression_formatA crate to format Rust expressions in a string, similar to f-string formatting in Python27,273MIT OR Apache-2.0Command line utilities expression_format_implmacros implementation for crate expression_format.24,358MIT OR Apache-2.0Command line utilities expression_macroProcedural macros for compile-time mathematical expression parsing1,046MITMathematicsParsing tools expression_parserA minimal Rust parser and evaluator for arithmetic expressions with variables, built using the pest parsing library. It converts…47MIT expression_parser_sympyHigh-level API for mathematical expression parsing and evaluation789MITMathematicsParsing tools expression_simplifyA simple expression simplifier based on OO course(SCSE, BUAA)2,287MIT expressionsFlexible expression parser and evaluator4,036MITMathematicsParser implementations expressiveFork of evalexpr3,918MIT expressive-cronA fluent builder for cron expressions, inspired by Laravel.19MIT expressjsFast, unopinionated, minimalist web framework for Rust, similar to Express.js266MITWeb programming::HTTP server expressoA very basic expression parser, and runner. For educational use only.15,395MITCompilersParser implementations expressrsCreate a website in localhost with ease!8,191AGPL-1.0-only expriRepo-local remote experiment workflow tools74MIT exprimoExprimo is a JavaScript expression evaluator written in Rust.21,988MIT exprintA library for improving the format_args macro1,288MIT OR Apache-2.0 exprkitA mathematical expression parser and evaluator library, inspired by the ExprTk C++ library25MIT OR Apache-2.0MathematicsParser implementations exprsA 0 dependency math expression parser and evaluator in Rust. It aims to be simple to use and is more of an exercise than anything.2,859WTFPL exprtEmbeddable expression language1,643MITParser implementations exprtk_rsRust bindings to the ExprTk C++ library (http://www.partow.net/programming/exprtk)14,830MIT exprtk_sysLow level rust bindings to the ExprTk C++ library (http://www.partow.net/programming/exprtk)16,596MIT exprustRust crate for selected ISO 10303-11 EXPRESS schemas (such as AP203 and others), that enables reading, editing, and creating STEP…375AGPL-3.0Data structuresEncoding expryExecute an expression on an encoded (binary) value, yielding another binary value (either in decoded or encoded form). Supports…32,787Apache-2.0Data structuresEncoding expry_macrosExecute an expression on an encoded (binary) value, yielding another binary value (either in decoded or encoded form). Supports…27,041Apache-2.0Data structuresEncoding exprzAn Expression Library20,718ISCData structuresNo standard library exprz-coreExprZ Core Library9,389ISCData structuresNo standard library expungeA simple crate to expunge, redact and transform struct fields declaratively2,142,286MIT expunge_deriveA simple crate to expunge, redact and transform struct fields declaratively2,142,874MIT expyEmbeddable & extensible expression evaluator2,711MIT OR Apache-2.0CompilersMathematics exquisite-downloadHigh-performance multi-connection HTTP download manager with segmented downloading, resume support, and JSON-RPC control23MIT exrRead and write OpenEXR files without any unsafe code60,230,481BSD-3-ClauseEncodingFilesystem exrngRNG crate with lan features but using external RNG source4,746MIT/Apache-2.0AlgorithmsNo standard library exrsexrs is a command executor wrapping `std::process::Command`.5,117MITCommand-line interface exspecStatic analyzer for test design quality -- verifies tests function as executable specifications235MITCommand line utilitiesDevelopment tools::Testing exspec-coreCore analysis engine for exspec625MIT exspec-lang-phpPHP language support for exspec329MIT exspec-lang-pythonPython language support for exspec336MIT exspec-lang-rustRust language support for exspec336MIT exspec-lang-typescriptTypeScript language support for exspec327MIT exstdexstd is a Rust library that provides a set of commonly used extensions for the Rust standard library, including serialization,…8,642MITAccessibilityAPI bindings exsymSymbolic computing system for business1,092MIT extA Rust extension library.2,566MIT OR Apache-2.0 ext-algoGraph algorithm extension for KyuGraph: PageRank, shortest path, community detection272MIT ext-commonBase crate for extrs4,224Apache-2.0 ext-crud-deriveDerive macros for ext-crud-rs2,299MIT ext-crud-rsext-crud-rs is a library to provide CRUD operations.2,041MIT ext-ftsFull-text search extension for KyuGraph powered by Tantivy273MIT ext-index-macromacro for tantivy_ext crate1,874MIT ext-opsGeneral purpose arithmetic operator traits which are missing from the standard library1,900MPL-2.0MathematicsNo standard library ext-permission-riskMap Chrome / Manifest V3 extension permission strings (activeTab, tabs, cookies, <all_urls>, ...) to a risk level (low/med/high)…19MITData structuresDevelopment tools ext-php-rsBindings for the Zend API to build PHP extensions natively in Rust.521,571MIT OR Apache-2.0API bindings ext-php-rs-bindgenFork of rust-bindgen with preserve_none ABI support197,574BSD-3-ClauseDevelopment tools::FFIExternal FFI bindings ext-php-rs-buildBuild-time PHP detection utilities for ext-php-rs.231,935MIT OR Apache-2.0Development tools::Build Utils ext-php-rs-clang-sysFork of clang-sys with preserver none support.81,022Apache-2.0 ext-php-rs-deriveDerive macros for ext-php-rs.501,862MIT OR Apache-2.0 ext-rdfRDF Linked Data import extension for KyuGraph303MIT ext-rsA Rust crate that brings C++-style extensions to Rust. Because why not?42MIT ext-sortrust external sort algorithm implementation1,161,884UnlicenseAlgorithms ext-stringAn attempt to extend rust String struct with functionality from other programming languages7,155MIT ext-timeA Rust library that extends the time crate with additional useful methods for time manipulation and formatting3,179MITDate and time ext-timeouttimeout tool2,836Apache-2.0 ext-trait[deprecated/renamed] Use `::extension-traits` instead9,899,172Zlib OR MIT OR Apache-2.0 ext-trait-proc_macrosInternal: proc-macro backend of ::ext_trait.9,900,393Zlib OR MIT OR Apache-2.0 ext-vectorVector similarity search extension for KyuGraph269MIT ext2Read and write on Ext2 partitions without mount8,547MIT/Apache-2.0 ext4Read information from EXT4 filesystem images27,196MITFilesystemOperating systems ext4-cliRead ext4 filesystems from image files and block devices53MIT OR Apache-2.0 ext4-fsA very basic library to read the ext4 filesystem13,609MIT ext4-lwext4A safe Rust wrapper for ext2/3/4 filesystem operations based on lwext41,516MIT OR Apache-2.0FilesystemNo standard library ext4-lwext4-sysFFI bindings to lwext4 - a lightweight ext2/3/4 filesystem implementation1,564MIT OR Apache-2.0External FFI bindingsFilesystem ext4-mkfsPure Rust library for creating ext2/ext3/ext4 filesystems67MIT OR Apache-2.0Embedded developmentFilesystem ext4-mkfs-sysFFI bindings to lwext4 for ext4 filesystem creation139MIT OR Apache-2.0External FFI bindingsFilesystem ext4-viewNo-std compatible Rust library for reading ext2/ext4 filesystems37,277MIT OR Apache-2.0Embedded developmentFilesystem ext4_rsCross-platform rust ext4.11,262MIT ext4fsRust implementation of ext4 file system used in user space1,566Apache-2.0 ext4fs-cliCLI and MCP server for ext4 forensic analysis38Apache-2.0 ext4fs-coreForensic-grade ext4 filesystem parser836Apache-2.0 ext4fs-fuseForensic FUSE mount for ext4 images35Apache-2.0 ext4plusNo-std compatible Rust library for ext2/ext3/ext4 filesystems2,504MIT OR Apache-2.0AsynchronousEmbedded development ext_authPlaceholder1,578MPL-2.0 ext_countSummarize the file extensions in a path, with estimated MIME types and average size per extension2,681MIT ext_formatA small, yet powerful, Rust crate for string interpolation2,743MIT ext_mimeFast and efficient file extension to MIME-Type mapping. 高效的文件后缀到 MIME 类型映射工具78MulanPSL-2.0Data structuresDevelopment tools ext_nameext_name361MulanPSL-2.0 ext_stdA library of utilities intended as an extension of the standard library.5,210GPL-3.0+ extabsImplements expandtabs for String7,131MIT extarOut-of-core tar archive processing.3,546BSD-2-Clause