All 305,250 crates, alphabetically

error-traceSmall Rust crate for printing nice errors traits based on `std::error::Error::source()`.5,201Apache-2.0Value formatting error-treeThis crate let's us use the `error_tree!` proc macro for ergonomic error hierarchy definition57,912MITDevelopment tools error-treesFail with multiple errors, istead of only the first.3,877MITRust patterns error-typeProvides a macro for constructing unifying error types.20,757MIT error-utilsSome rust macros to simplify common error handling patterns6,474MITRust patterns error-utils-deriveSome rust proc-macros to simplify common error handling patterns6,489MITRust patterns error-windowSimple Rust proc macro that will make your main function output errors as dialog boxes as well as errors to the console.1,943BSD-3-Clause error-window-macroMacro that the error-window crate re-exports2,400GPL-3.0-only OR LGPL-3.0-only error2A simple error handle library for Rust7,094MIT/Apache-2.0 error2-deriveA simple error handle library for Rust5,224MIT/Apache-2.0 error_coreFor when you don't use std, but you want std::error2,004MIT error_ctxMinimal context error crate with Temporary/Permanent status and compiler-enforced context on public APIs112MIT error_dashboard_rustA Rust library for error tracking and reporting to a dashboard.1,285MIT error_defA Rust syntax extension for generating error-handling boilerplate code.36,880GPL-2.0 error_defsMacro for generating error-handling boilerplate code2,915 error_deriveMacros for deriving Error implementations through custom_derive!.7,283MIT error_feedbackerror feedback strings1,623MIT OR Apache-2.0 error_generatorTransform structs and enums into fully qualified errors using attributes2,968MIT error_handlingMacro used to clean and centralize error handling within async processes7,258MIT OR Apache-2.0 error_hookerror hook6,457ISC error_hook_attrerror hook4,524ISC error_kingCLI for 3RROR_K1NG - Website Roast Machine. Get your website brutally roasted with AI-powered security, performance, SEO &…83MITCommand line utilitiesWeb programming error_labelLow-cardinality label for errors.22MITData structures error_logSimple, struct-based Error-Handling5,198 Apache-2.0No standard libraryRust patterns error_mancerQuickly define custom error enums for a function.10,246MITRust patterns error_mancer_macrosproc macro for error_mancer9,706MIT error_mapperSimple and standardized Results and Errors handling accross all your projects19,803MITConfigurationData structures error_proc_macroAutomatically insert Debug, fmt::Display and Error derives into Enums in order to use them as Error enums498Apache-2.0 error_reporterA library to print errors845,566MIT OR Apache-2.0Value formatting error_setQuick error declarations and automatic conversions between errors for precisely typed error handling. Inspired by Zig's error set…168,758Apache-2.0No standard libraryRust patterns error_set_implImplementation of the proc macro for the error_set crate.166,953Apache-2.0 error_showShow error code information5,895MITCommand line utilitiesDevelopment tools::Cargo plugins error_snippetLibrary for reporting fancy diagnostics to the console10,502MITCommand line utilitiesCompilers error_snippet_deriveDerive macros for `error_snippet`.5,151MIT error_statusModel common error context with HTTP 4xx and 5xx code835MIT OR Apache-2.0Development toolsRust patterns error_toolsBasic exceptions handling mechanism192,169MITAlgorithmsDevelopment tools error_utilTypes and macros to help with common error handling in the Rust language2,128MIT/Apache-2.0 erroracleHTTP error classification and target modeling for scanner feedback loops.47,680MIT OR Apache-2.0Network programmingWeb programming errorbenderReserving crate name1,777MIT errorconA small crate for scoping errors and easier error conversion3,280Apache-2.0Data structuresNo standard library errordebuggerA simplified Rust SDK for ErrorDebugger via OpenTelemetry59MIT errorderiveDerive macro for `std::error::Error`1,885MIT/Apache-2.0 erroreLibrary for error handling and tracing5,336MIT OR Apache-2.0No standard libraryRust patterns errore-implImplementation detail of the `errore` crate2,239MIT OR Apache-2.0 errorfunctionsPure Rust package to compute the error function, Dawson's function, and Faddeeva's function for real and complex arguments.45,208MITMathematics errorgapRust notifier for Errorgap error tracking.39MITAsynchronousDevelopment tools::Debugging errorjsoneasy complex error with json1,571MIT OR Apache-2.0 errorlitMacro for creating error literals474MIT OR Apache-2.0Development toolsNo standard library errormakeA macro for automatically creating Error structs5,873MIT OR Apache-2.0 errorsstd::error::Error utilities28,178MITRust patterns errors_rustJust a simple library for error mapping.1,940non-standard errors_with_contextApplication-ending Errors with context2,882MITDevelopment tools::Debugging errorserSerializes and psudo-deserializes structs implementing the Error trait.2,835MIT errorsetErrorSet library6,408Apache-2.0 errorstackA derive-based typed error system with first-class error stack building.58Apache-2.0 errorstack-deriveDerive macro for errorstack.129Apache-2.0 errorstashA library for collecting multiple related errors, and reporting them together799MIT OR Apache-2.0Rust patterns errortoolsQuality of life utilities for error handling in Rust.2,136MITCommand-line interfaceNo standard library errorvecUtilities for tracking multiple errors.1,723MIT errorxerror and result types/utilities.157MIT errorx-macrosmacros for the errorx crate.260MIT erroxA simple and minimal error logging library.3,008GPL-3.0Command-line interface errsA library for handling errors with reasons7,412MITRust patterns errsightRust client for ErrSight error tracking — captures panics, errors, and log/tracing events and ships them to the ErrSight API from…34MITDevelopment tools::Debugging errstack[WIP]1,048MIT OR Apache-2.0 ersA rewrite system based on s-expressions and pattern matching3,365AGPL-3.0 ersa_lsp_coreLSP core for the GPC Scripting language. Intended to be used as a library.60GPL-3.0-or-later ersatzEntity-Reaction Systems: analysis, transformation, synthesis1,874MIT ersoBridge program that allows Erlang to access Turso databases. Built for the `pturso` Gleam library.32non-standard erspanUnwraps original data packet from GRE/ERSPAN packet8,073MIT erstEmbedded Rust10,574MIT erst-deriveEmbedded Rust9,968MIT erst-prepareEmbedded Rust6,216MIT erst-sharedEmbedded Rust13,072MIT ertA combinator to control future execution order.40,894MIT ertraceExperimental Error Return Tracing for Rust4,501MIT OR Apache-2.0Development tools::DebuggingNo standard library erubusTemporal knowledge graph for AI agents and robots — bitemporal facts, confidence decay, one binary, embedded SQLite59MITDatabase implementationsScience::Robotics eruditeA fully-asynchronous, sandboxed, language-agnostic, test running library532Apache-2.0AsynchronousConcurrency eruka-mcpMCP (Model Context Protocol) server for Eruka — anti-hallucination context memory for AI agents136MITCommand line utilitiesWeb programming eruoContext lookup router — finds the right source for any query21MIT eruptVulkan API bindings75,996ZlibAPI bindingsGame development erupt-bootstrapvk-bootstrap for Rust10,045ZlibGame developmentGraphics eruption-sdkProvides an interface to the Eruption Realtime RGB LED Driver for Linux2,877LGPL-3.0Hardware support eruspyIt helps you to deliver file or folder between you and your target server39MIT OR Apache-2.0 erustERust is an additional package for egui and eframe that provides extendable components.8,713MIT erusticA set of tools and libraries to build client web apps using Rust and Wasm2,754MIT eryAnother Everything frontend for Windows file searching, but in Terminal.4,193GPL-3.0-or-later erydanosOptimized routines for ARM NEON and SSE137,393Apache-2.0 OR BSD-3-ClauseMathematics eryoneryon is a harmonic, topological framework for managing computational entities at scale.2,316Apache-2.0MathematicsScience eryon-actorsthis crate focuses on implementing various actors for the eryon framework3,038Apache-2.0MathematicsScience eryon-coreThe core modules of the eryon framework, providing essential functionality for computational entities.3,810Apache-2.0MathematicsScience eryon-memthis crate implements the memory-related aspects of the eryon framework3,375Apache-2.0MathematicsScience eryon-netThis crate is a research-oriented project focusing on establishing the foundation for a harmonic, topological computing system1,938Apache-2.0MathematicsScience eryon-nrtThis crate is a research-oriented project focusing on establishing the foundation for a harmonic, topological computing system2,401Apache-2.0MathematicsScience eryon-plantsthis crate focuses on implementing various actors for the eryon framework23Apache-2.0MathematicsScience eryon-rtthe runtime modules for the eryon framework2,807Apache-2.0MathematicsScience eryon-surfacethis crate works to materialize the surface of individual actors within the eryon framework using topological data analysis and…3,234Apache-2.0MathematicsScience eryxA Python sandbox with async callbacks powered by WebAssembly1,101MIT OR Apache-2.0Development toolsWebAssembly eryx-macrosProcedural macros for the eryx Python sandbox434MIT OR Apache-2.0Development tools::Procedural macro helpers eryx-precompileCLI tool for pre-compiling eryx WASM runtimes477MIT OR Apache-2.0 eryx-runtimePython WASM runtime component for the eryx sandbox907MIT OR Apache-2.0 eryx-vfsVirtual filesystem implementation for eryx sandbox833MIT OR Apache-2.0 eses37MIT es-disk-plannerA CLI and library to estimate Elasticsearch cluster disk capacity.220MITCommand line utilitiesDatabase interfaces es-entityEvent Sourcing Entity Framework91,851Apache-2.0Data structuresDatabase interfaces es-entity-macrosProc macros for es-entity92,479Apache-2.0Data structuresDatabase interfaces es-fluentType-safe Fluent localization derives and runtime traits for Rust applications7,476MIT OR Apache-2.0Internationalization (i18n)Localization (L10n) es-fluent-buildBuild-script helpers for es-fluent locale asset tracking4,179MIT OR Apache-2.0 es-fluent-cliCargo subcommand for generating, checking, syncing, and formatting es-fluent FTL files3,615MIT OR Apache-2.0Internationalization (i18n)Localization (L10n) es-fluent-cli-helpersHelper functions for es-fluent CLI runner crate676MIT OR Apache-2.0 es-fluent-coreCore crate for multiple es-fluent-* crates4,894MIT OR Apache-2.0 es-fluent-deriveDerive crate for es-fluent7,217MIT OR Apache-2.0 es-fluent-derive-coreCore parsing and logic for es-fluent-derive3,447MIT OR Apache-2.0 es-fluent-generateA crate for handling .ftl files4,960MIT OR Apache-2.0 es-fluent-langType-safe locale enums and ICU4X-backed language labels for es-fluent.3,242MIT OR Apache-2.0Internationalization (i18n)Localization (L10n) es-fluent-lang-macroMacros crate for es-fluent-lang.3,478MIT OR Apache-2.0 es-fluent-manager-bevyBevy ECS and AssetServer runtime manager for es-fluent translations1,829MIT OR Apache-2.0Internationalization (i18n)Localization (L10n) es-fluent-manager-corees-fluent manager core6,577MIT OR Apache-2.0 es-fluent-manager-dioxusDioxus provider, hook, and SSR runtime manager for es-fluent translations239MIT OR Apache-2.0Internationalization (i18n)Localization (L10n) es-fluent-manager-embeddedZero-setup embedded runtime manager for es-fluent translations4,780MIT OR Apache-2.0 es-fluent-manager-macrosMacros for the es-fluent manager5,390MIT OR Apache-2.0 es-fluent-runnerShared protocol and filesystem helpers for es-fluent runner crates213MIT OR Apache-2.0 es-fluent-sc-parserA crate for parsing Fluent syntax from source code3,688MIT OR Apache-2.0 es-fluent-sharedShared runtime-safe types and helpers for the es-fluent ecosystem1,664MIT OR Apache-2.0 es-fluent-tomlToml crate for es-fluent6,935MIT OR Apache-2.0 es-htmlformLibrary for building and validating HTML(5) forms.3,213Apache-2.0/MITWeb programming es-public-proxysimple read-only HTTP reverse-proxy for exposing an Elasticsearch node to the public internet6,949AGPL-3.0-or-laterCommand line utilities es-replayEvent Sourcing and CQRS library with WASM support1,366MITAsynchronous es-replay-macrosProcedural macros for the Replay event sourcing library1,295MITDevelopment tools::Procedural macro helpers es-replay-macros-testsIntegration tests for es-replay-macros33MIT es-replay-persistencePersistence layer for the Replay event sourcing library (PostgreSQL and in-memory backends)1,176MITAsynchronousDatabase interfaces es-sysBindings to macOS Endpoint Security framework.3,000MIT es-wifi-driverDriver for the es-wifi adapter from Inventek.5,290Apache-2.0Embedded developmentNo standard library es3Library for parsing, extracting, and verifying ES3 dossier files37MIT OR Apache-2.0Command line utilitiesCryptography es3-cliCommand line interface for ES3 dossier files19MIT OR Apache-2.0Command line utilitiesCryptography es4forensicsImport several timelines into elasticsearch11,666GPL-3.0 es5es5748MIT es51986ES51986 data decoder library.9,626Apache-2.0 es6es6436MIT es7210no_std driver for the Everest Semi ES7210 quad-channel audio ADC96MITEmbedded developmentNetwork programming es8311no_std driver for the Everest Semi ES8311 low-power audio codec289MITDevelopment toolsEmbedded development es_balkgen bulkable es query1,716MIT es_bulkgen bulkable es query3,023MIT es_deep_pagerA elasticsearch client that can perform fast deep paging queries.1,269MIT es_resolveJavaScript/TypeScript module resolution in Rust8,802MIT es_runtimeAn API and Utils around the spidermonkey script engine14,915GPL-3.0Development tools esaxx-rsWrapping around sentencepiece's esaxxx library.24,867,396Apache-2.0 esbImplementation of Nordic's Enhanced ShockBurst communication protocol3,532MIT OR Apache-2.0Embedded developmentNo standard library esb-ngImplementation of Nordic's Enhanced ShockBurst communication protocol1,078MIT OR Apache-2.0Embedded developmentNo standard library esb_fireplaceThe FIREPLACEv1.0 allows the use of the `esb` tooling for solving Advent of Code problems.3,788GPL-3.0-or-laterCommand line utilities esbatFunctions for lunar phase calculations4,602CC-BY-NC-4.0Date and time esbindEmbind1,857MIT esbuildesbuild1,704MIT esbuild-configA short description of my package3,013MIT esbuild-metafileUtilities for working with esbuild metafiles7,659MIT esbuild-rsRust wrapper for esbuild, an extremely fast JS minifier written in Go35,554MITCommand line utilitiesCompression esbuild_clientA Rust implementation of a client for communicating with esbuild's service API over stdio269,478MIT escEscape characters in strings4,813Unlicense/MITCommand-line interfaceText processing esc-pos-libA library for printing to ESC/POS compatible printers9,211MIT esc-seqLibrary to print simple escape sequences4,654MIT escafersparser & generator for escape sequences1,720MIT escalonUDP communication layer for the Escalon project21,545MIT escalon-jobsSimple way to scale your jobs application14,189MIT escanΞ Escan is a Rust API wrapper for Etherscan and its derivatives4,016MITWeb programming escapade`escapade` provides String concatenation and writing, but automatically escapes any HTML in the data in the process. This…6,857MIT escapeRun arbitrary commands via http7,674MIT escape-artistA visualizer for terminal escape sequences17,609MIT escape-asciiAn extremly tiny tool to convert stdin raw byte stream to printable escaped-ascii form (with slice::escape_ascii()), such as byte…1,605MITCommand line utilitiesValue formatting escape-bytesEscapes bytes that are not printable ASCII characters.1,199,647Apache-2.0 escape-regexEscape regular expression special characters.1,452MITParsing tools escape8259RFC8259-compliant string escaping and un-escaping22,187,286MITEncoding escape_itConverts white-space characters into their escaped versions in provided Strings1,531MIT OR Apache-2.0Parsing tools escape_it_libConverts white-space characters into their escaped versions in provided Strings2,066MIT OR Apache-2.0Parsing tools escape_stringEfficiently parse backslash-escaped strings260,766BSD-2-Clause escapecolorEscape Ansi colours (Select Graphic Rendition) from strings5,916MIT escapecolorsEscape Ansi colours (Select Graphic Rendition) from strings1,681MIT escaped-delimiterIterator of delimited slices with escape characters1,828MIT OR Apache-2.0Rust patternsText processing escapegoatSafe, fallible, embedded-friendly ordered set/map via a scapegoat tree. Validated against BTreeSet/BTreeMap.365MITAlgorithmsData structures escapementDeterministic time for multi-threaded synchronous code: a virtual clock that only advances when every participating thread is…19MIT OR Apache-2.0ConcurrencyDate and time escaperA library for HTML entity encoding and decoding267,952Apache-2.0 / MIT / MPL-2.0EmailParsing tools escapiExtremely Simple Capture API (ESCAPI) - simple webcam API for windows31,220non-standard escapingconfigurable string escaping and unescaping28,480MITText processing escapistThis library is a minimal library for escaping HTML and href attributes; it can also unescape HTML.10,709MITEncoding escargotCargo API written in Paris9,262,587MIT OR Apache-2.0Development tools::Build Utils eschaccomputing chess moves471AGPL-3.0-or-later escherSelf-referencial structs using the async/await transformation4,212MIT OR Apache-2.0 escher-deriveSelf-referencial structs using the async/await transformation3,751MIT OR Apache-2.0 escher-execution-engineProduction-ready async execution engine for system commands30non-standard eschudt_consulRust client libray for Consul HTTP API2,497MIT/Apache-2.0 esclA Rust library for discovering and using scanners via the eSCL protocol (scanning over network)5,115MIT OR Apache-2.0 escl-scanA library for scanning documents over LAN or Wi-Fi using eSCL protocol.4,300GPL-3.0API bindings escl-scan-cliCLI for escl-scan1,761GPL-3.0Command line utilities escnulNUL-safe byte escaping for embedding in shell scripts710MIT escobaUseful broom to clean your RAM in Window$2,680BSD-3-Clause escodegenAST and code generator for a subset of ES5.21,068MIT escpEnergy Sciences Network transfer tool (EScp)1,633BSD-3-Clause escposESC/POS printer driver66,213MIT escpos-dbRust bindings to the ESC/POS printer database3,134MIT AND CC-BY-4.0 escpos-mdMarkdown for ESC/POS3,398MIT escpos-rsControl esc/pos printers with rust20,173MIT