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.

spektraA graphics experiment1,575MIT spektrogramiloWebAssembly-bazita realtempa sona spektrogramilo38GPL-3.0-or-later spelA fast spell checker for everyone.7,537MIT spel-rightA fast and lightweight spell checker and suggester.359non-standard spellSpell is a Streaming Parser for Event Logs using an LCS (Longest Common Subsequence)6,115MIT/Apache-2.0Parsing toolsScience spell-cliCLI for spell-framework1,424GPL-3.0-or-later spell-frameworkMake desktop widgets by the Mystic Arts of Spell3,655GPL-3.0-or-later spell_checkerA spell checking library you can provide a dictionary and a file to check to, it can print out a list of misspelled words1,829GPL-3.0 spellabetConvert characters into spelling alphabet code words3,8160BSDText processingValue formatting spellbookA spellchecking library compatible with Hunspell dictionaries102,092MPL-2.0 spellboundBindings to your friendly neighborhood spellchecker.3,070MIT OR Apache-2.0Operating systemsText processing spellcastCasting of dynamic objects3,834MIT spellcast_solverFor solving discord Spellcast boards. Was my first ever Rust project, so code isn't great.9,689MIT OR Apache-2.0 spellcasting_parserSpellcasting Parser is designed to parse and validate spellcasting commands. It allows users to create and validate spells using…969MIT spellcheckA spell-checker based on the statistical algorithm described by Peter Norvig in http://norvig.com/spell-correct.html10,906MIT spellcheck-rsA fast spellchecker written in Rust with Python bindings, optimized for OCR error correction1,708MIT spellcheck_toya basic spellchecking library based on edit distance6,951MIT spellchkA blazingly fast spellchecker CLI for any text file39MIT OR Apache-2.0Command line utilitiesText processing spellcliA CLI that allows you to check the spelling of different words.44MIT spellcode-cliMinimal CLI frontend for codebook.44GPL-3.0-or-laterCommand line utilitiesText processing spellerCLI tool for phonetic spelling1,363MIT OR Apache-2.0 spellingA spellchecker using the Levenshtein distance as the heuristic for distance.8,214Unlicense spelling_bee_solverA CLI app to generate solutions to the NYT Spelling Bee puzzles1,654MITCommand line utilities spelling_correctorA simple spelling corrector9,820MITCommand line utilities spellingbeeGenerate potential solutions for the NYT spelling bee game3,878Apache-2.0Command line utilitiesGames spelloutA phonetic code encoder/decoder42non-standardCommand line utilitiesEncoding spelltestSPELL TEST Mechanics5,281non-standard spensoA tensor (n-dim array) network, iterating, and contraction (using automatic abstract index matching) library.10,183MIT OR Apache-2.0 spenso-hep-libA spenso tensor library for high energy physics2,351MIT OR Apache-2.0 spenso-macrosProcedural macros for the spenso tensor library2,911MIT OR Apache-2.0 speqspeq — OpenAPI specification browser26MITCommand line utilitiesDevelopment tools sperrHigh-level Rust bindings to the SPERR compressor7,994MPL-2.0API bindingsCompression sperr-sysLow-level Rust bindings to the SPERR compressor9,108MPL-2.0API bindingsCompression spewA simple helper for spawning objects in Bevy.31,489MIT OR Apache-2.0Game development spexSimple(ish) parser and extractor of XML6,990MPL-2.0Internationalization (i18n)Parser implementations spezMacro to specialize on the type of an expression4,805,433BSD-2-ClauseDevelopment toolsDevelopment tools::Procedural macro helpers spez-macrosproc_macro crate for spez11,218BSD-2-Clause spezilinterspezifisch's linter for different file formats, linting for weirdly specific stuff5,572GPL-3.0-only spf.spf (Simple Pixel Font) file parser10,034Apache-2.0No standard libraryParsing tools spf-milterMilter for SPF verification22,829GPL-3.0-or-laterEmail spf_crateexample crate for spf314MIT spfrRecursively look up SPF records for a domain2,879AGPL-3.0-or-laterCommand line utilities spfsThe future home of the software packaging file system1,627Apache-2.0 spftraceUtility for tracing SPF queries11,995GPL-3.0-or-laterCommand line utilitiesEmail spfuncRust crate for numerical calculation of special functions.42,303MITMathematicsScience spgsecure password generator over CLI1,669non-standardCommand line utilitiesCryptography spg-auditAppend-only audit log with BLAKE3 hash-chain for SPG (compliance).1,523MIT OR Apache-2.0Database implementations spg-cliA CLI for initializing Spring Boot Projects34MIT OR Apache-2.0Command line utilitiesDevelopment tools spg-cryptoSelf-built cryptographic primitives for SPG: BLAKE3 hash, CRC32, no_std.3,472MIT OR Apache-2.0CryptographyNo standard library spg-embeddedEmbedded SQL database for Rust. Single-writer, WAL-backed, crash-safe. Zero external dependencies. PG-flavoured SQL with FOREIGN…2,202MIT OR Apache-2.0Database interfacesDatabase implementations spg-embedded-tokioTokio-friendly async wrapper around spg-embedded. Single-writer Database serialised via tokio::sync::Mutex; blocking engine calls…1,643MIT OR Apache-2.0AsynchronousDatabase interfaces spg-engineExecution engine for SPG: glues spg-sql parsing to spg-storage. Foreign keys, joins, vectors, cold tier.2,720MIT OR Apache-2.0Database implementations spg-manifestSPGMAN01 v10 catalog manifest format. Frozen wire/disk surface shared by spg-server and spg-embedded.2,651MIT OR Apache-2.0Database implementationsFilesystem spg-serverSPG daemon — listens for self-built wire-frame connections and PG-wire (libpq-compatible).1,198MIT OR Apache-2.0Database implementationsNetwork programming spg-sqlSelf-built SQL front-end for SPG: PG-dialect lexer + parser. no_std + alloc.2,907MIT OR Apache-2.0Database interfacesNo standard library spg-sqlxsqlx 0.8 Database driver for spg-embedded — let in-process callers use sqlx::query / query_as / pool.begin against an in-process…1,166MIT OR Apache-2.0 spg-storageIn-memory storage primitives for SPG: values, rows, table schema, catalog with foreign-key constraints.2,905MIT OR Apache-2.0Data structuresDatabase implementations spg-wireSelf-built wire-frame protocol for SPG. no_std + alloc.1,750MIT OR Apache-2.0EncodingNetwork programming spgctlSPG command-line client — speaks the self-built wire protocol.1,218MIT OR Apache-2.0Command line utilitiesDatabase interfaces spglibRust bindings to spglib.6,869BSD-3-ClauseScience spglib-sysRaw Rust bindings to spglib.9,014BSD-3-ClauseExternal FFI bindingsScience sphSmoothed-particle hydrodynamics15MIT sph2mmAdd an AMR background to an existing SPH initial conditions file5,352LGPL-3.0+MathematicsScience sphaleriteA dependency-free crate for binary serialization1,497MIT spheneA high-performance, modern CLI tool for core image processing, editing, and pixel manipulation.18MITCommand line utilitiesMultimedia::Images sphereFunction for calculating volume and surface area of n-sphere.20,256MIT sphere-knnfast nearest-neighbor lookups on a sphere. This is useful if, for example, you have a database of geographic points (latitude,…1,242MIT sphere-n-rsN-Sphere Code Generation in Rust4,179MIT OR Apache-2.0 sphere-osOS built using o_types for inter & intra document aliasing/instancing, embedding executables & visitors1,838MIT sphere_pack_from_jsonA binary used to simulate sphere packing with varying discrete proportions of different sphere sizes2,880non-standard spherenet-adminCommand-line tool for SphereNet governance and network administration103non-standard spherenet-authorityAuthority abstraction for single-sig and multisig execution on SphereNet204non-standard spherenet-badge-cliCLI for interacting with the Badge program17Apache-2.0API bindingsAuthentication spherenet-badge-clientBadge program for on-chain attestations50Apache-2.0API bindingsAuthentication spherenet-badge-interfaceBadge program for on-chain attestations71Apache-2.0API bindingsAuthentication spherenet-generic-tokenSphereNet fork of the Solana Program Library Generic Token — adds regulated-token parsing (upstream spl-generic-token v2.0.1 base)36Apache-2.0 spherenet-loader-v3-interfaceSphereNet fork of the Solana loader V3 interface — whitelist-gated deploy/upgrade builders (upstream solana-loader-v3-interface…45Apache-2.0 spherenet-monetary-policy-clientA generated Rust library for the Monetary Policy program217non-standard spherenet-monetary-policy-interfaceInterface definitions for the SphereNet Monetary Policy program436non-standard spherenet-programSpherenet Program681Apache-2.0 spherenet-program-whitelist-clientA generated Rust library for the Program Whitelist program353non-standard spherenet-program-whitelist-interfaceInterface of SphereNet's Program Whitelist Program1,443non-standard spherenet-regulated-token-cliCLI for interacting with the Sphere Foundation regulated-token program22Apache-2.0API bindingsAuthentication spherenet-regulated-token-clientGenerated Rust client for the Spherenet regulated token program34Apache-2.0API bindingsAuthentication spherenet-regulated-token-interfaceInstructions and types for interacting with the regulated token standard34Apache-2.0API bindingsAuthentication spherenet-stake-clientA generated Rust library for the SphereNet Stake program with Validator Whitelist99Apache-2.0 spherenet-stake-interfaceInstructions and constructors for the SphereNet Stake program with Validator Whitelist3,150Apache-2.0 spherenet-sysvarSpherenet sysvar account types686Apache-2.0 spherenet-validator-whitelist-clientA generated Rust library for the Validator Whitelist program393non-standard spherenet-validator-whitelist-interfaceInterface of SphereNet's Validator Whitelist Program1,442non-standard spherenet-whitelisted-loader-v3-interfaceSphereNet Whitelisted loader V3 interface.618Apache-2.0 sphereqlProject high-dimensional embeddings onto a 3D sphere for semantic search, category enrichment, and visualization59MIT sphereql-corePure spherical math primitives for sphereQL343MITMathematicsScience sphereql-corpusShared test corpus for SphereQL examples — 775 hand-crafted + 5,000+ extended concepts across 31 categories44MIT sphereql-embedVector embedding projection engine for sphereQL195MIT sphereql-graphqlGraphQL integration for sphereQL spatial queries116MITAPI bindingsScience sphereql-indexSpatial indexing and queries for sphereQL279MITData structuresMathematics sphereql-layoutLayout engine for sphereQL spatial positioning234MITAlgorithmsMathematics sphereql-linguaLanguage to native SphereQL coordinates: text to (theta, phi, r)18MITAlgorithmsScience sphereql-vectordbVector database connectors for sphereQL95MITAPI bindingsDatabase interfaces spheresPhase 0 prototype: a single sphere that everts and envelops the viewer.17GPL-3.0-or-later sphericSpheric end-to-end encryption framework1,512MIT OR Apache-2.0 spherical-cowSpherical Cow: High volume fraction sphere packing in arbitrary geometries8,548MIT/Apache-2.0 spherical-harmonicsRust native spherical harmonics library1,849Apache-2.0Rendering spherical_blue_noiseBlue noise generator on a sphere.3,023MIT spherical_geometryA package for working with spherical geometry4,526MITMathematicsScience::Geospatial spherical_voronoiGenerate Voronoi diagrams on a sphere.15,716MIT spherroA SPH fluid simulator4,469MIT sphincs-plus-cry4Implementation of the SPHINCS+ post-quantum signature scheme2,739MIT sphincsplusBindings for the Reference-Implementation of SPHINCS+128MIT sphinxA thin wrapper around egui to provide basic page switching and other utilities along with an async runtime4,662MIT OR Apache-2.0 sphinx-authersecp256k1 signature-based authentication for sphinx chat15,717MIT sphinx-glyphSphinx lightning hardware signer3,922MIT sphinx-langAn intepreter for a dynamic language implemented in Rust42,383MITCompilersDevelopment tools sphinx-packetA Sphinx packet implementation in Rust280,567Apache-2.0 sphinx-rsProduction-grade Sphinx onion routing with Single-Use Reply Blocks (SURBs) for anonymous messaging1,051MIT OR Apache-2.0CryptographyNetwork programming sphinx-rustdocgenExecutable to extract rustdoc comments for Sphinx18,430GPL-3.0-or-laterDevelopment tools sphinx-ultraHigh-performance Rust-based Sphinx documentation builder for large codebases1,452MIT sphinx-use-stateHelper proc macro for Sphinx1,950MIT OR Apache-2.0 sphinx_invA rust library to parse Sphinx `objects.inv` files182MIT sphinx_replay_cacheSphinx cryptographic packet replay writeback cache.5,874AGPL-3.0-only sphinxadSphinxad hight-level wrapper, that allows to record voice from microphone and later recognize the speech by pocketsphinx5,533MIT sphinxad-sysSphinxad low-level wrapper, that allows to read data from microphone8,570non-standard sphinxcryptoSphinx cryptographic packet format library28,027AGPL-3.0-only sphrsSpherical harmonics and solid harmonics18,284MIT OR Apache-2.0GraphicsRendering spiEmulator-focused SPI host controller implementation44MIT OR Apache-2.0EmulatorsHardware support spi-flashSPI flash memory interface crate13,019Apache-2.0 OR MIT spi-handle`SpiHandle` trait3,002MIT spi-i2c-hdl-catSPI and I2C controllers using hdl-cat categorical hardware description20MIT OR Apache-2.0 spi-memoryA generic driver for different SPI Flash and EEPROM chips35,2140BSDEmbedded development spi-memory-asyncA generic driver for different SPI Flash and EEPROM chips6,4460BSDEmbedded development spi-programSolana program for Solana Progam Interface (SPI) middleware583non-standard spibuttonlibSPI button library for lamp-buttons with MC14021B and MC14094B or equivilant shift registers.23non-standard spica-signerThe spica signer server1,284Apache-2.0/MIT spica-signer-commonUtilities to work with spica signer3,915Apache-2.0/MIT spicatFull-duplex SPI transactions from the command line6,896BSD-2-ClauseCommand line utilitiesEmbedded development spice(Work in Progress) SPICE protocol implementation in Rust.1,948MIT spice-clientA pure Rust SPICE client library with native and WebAssembly support4,238GPL-3.0Network programmingVirtualization spice-client-glibRust bindings for the Spice client library9,033MITAPI bindings spice-client-glib-sysRaw C-FFI bindings for the Spice GLib library9,753MITAPI bindings spice-coordinatesCanonical content identifiers (content hashes + git blob ids) and package coordinates (purl) for software artifacts — the Rust…89Apache-2.0Cryptography spice-frameworkA Rust test framework for nondeterministic LLM agents213MITDevelopment tools::Testing spice-sysThin wrapper for the C language implementation spice toolkit from NAIF1,674MITExternal FFI bindingsMathematics spice21Coming Soon7,032BSD-3-Clause spice21intSpice21 Internal Crate, for Proc-Macro Separation. Not helpful for anyone else.3,018BSD-3-Clause spice21procsSpice21 Procedural Macros2,415BSD-3-Clause spice21rComing Soon1,798BSD-3-Clause spice21sComing Soon1,735BSD-3-Clause spice_rawfileParse SPICE rawfiles1,497MIT spiceaiSDK for Spice.ai, an open-source runtime and platform for building AI-driven software.5,925Apache-2.0 spiceai_duckdb_forkErgonomic wrapper for DuckDB - forked from duckdb-rs to add support for duckdb_scan_arrow22,104MITDatabase interfaces spicedb-clientErgonomic Rust gRPC client for SpiceDB5,801Apache-2.0 spicedb-embeddedEmbedded SpiceDB for Rust - embedded authorization using the standard gRPC API1,863Apache-2.0API bindingsAuthentication spicedb-embedded-sysFFI and native library for SpiceDB C shared library (builds from Go or downloads prebuilt)1,685Apache-2.0Development tools::FFI spicedb-grpcAuto-generated Rust gRPC client for SpiceDB165,087Apache-2.0 spicedb-grpc-tonicAuthzed/SpiceDB gRPC API generated from buf.build/authzed/api via tonic3,771Apache-2.0API bindingsAsynchronous spicedb-rsSpiceDB wrapper3,525MIT spicedb-rs-clientRust client for the SpiceDB/Authzed gRPC API.4,860Apache-2.0API bindingsNetwork programming spicedb-rs-protoGenerated Rust protobuf and gRPC bindings for SpiceDB/Authzed APIs.6,121Apache-2.0API bindingsNetwork programming spicedb-rustA client for spicedb12,212MIT spicekitPure-Rust reader for NASA/NAIF SPICE kernel formats (DAF, SPK, PCK, text kernels). Independent of the CSpice toolkit.1,691MITAerospaceParser implementations spicetimeThe spicy alternative to lifetime annotations.21MIT spicexA complete configuration solution for Rust applications, inspired by Viper960MITConfigurationParsing tools spicy-dicea CLI tool for rolling dice692MIT spicy-uuid-genan easy uuid generator for the command line436MIT spidapAccess SPI flash memories using CMSIS-DAP probes1,643Apache-2.0 OR MIT spiderA web crawler and scraper, building blocks for data curation workloads.2,054,210MITCommand line utilitiesWeb programming spider-browserBrowser automation client for Spider's pre-warmed browser fleet with smart retry and browser switching865MITAPI bindingsWeb programming spider-clientSpider Cloud client43,837MITWeb programming spider-cloud-cliThe Spider Cloud CLI for web crawling and scraping28,042MITWeb programming spider-coreCore functionality for the spider-lib web scraping framework.415MITDevelopment toolsParsing tools spider-downloaderDownloader component for the spider-lib web scraping framework503MIT spider-html5everHigh-performance browser-grade HTML5 parser (Send-able fork via spider-tendril)17,100MIT OR Apache-2.0Parser implementationsWeb programming spider-http-cache-reqwesthttp-cache middleware for reqwest with source-chain-preserving transport errors (spider-rs fork of http-cache-reqwest)7,811MIT OR Apache-2.0CachingWeb programming::HTTP client spider-libA Rust-based web scraping framework inspired by Scrapy (Python).386MITDevelopment toolsParsing tools spider-macroProc-macros for the spider-lib web scraping framework.461MITDevelopment toolsParsing tools spider-markup5everCommon code for xml5ever and html5ever (Send-able fork via spider-tendril)17,151MIT OR Apache-2.0Parser implementationsWeb programming spider-markup5ever_rcdomSend/Sync-friendly RcDom on the spider-* atomic-tendril fork stack4,399MIT OR Apache-2.0Parser implementationsWeb programming spider-middlewareMiddleware implementations for the spider-lib web scraping framework.475MITDevelopment toolsParsing tools spider-pipelinePipeline implementations for the spider-lib web scraping framework.525MITDevelopment toolsParsing tools spider-rulesSpider/crawler identification rules1,247MIT spider-tendrilSend-able tendril fork (atomic refcount) for high-concurrency HTML parsing17,277MIT OR Apache-2.0Data structuresText processing spider-utilShared utility functions and types for the spider-lib ecosystem704MIT spider-web-searchA tool for web search on your favorite sites.3,789MITCommand line utilities spider_agentA concurrent-safe multimodal agent for web automation and research.17,684MITAsynchronousWeb programming spider_agent_htmlHTML processing utilities for spider_agent — cleaning, content analysis, and diffing.17,627MITText processingWeb programming spider_agent_typesPure data types and constants for spider_agent automation. Zero heavy dependencies.80,670MITData structuresWeb programming spider_chromeDEPRECATED: This crate has been renamed to `chromey`. Please update your Cargo.toml.1,015,342MIT OR Apache-2.0API bindingsDevelopment tools::Testing spider_chromiumoxide_cdpContains all the generated types for chromiumoxide638,229MIT OR Apache-2.0 spider_chromiumoxide_fetcherContains a chromium and chrome for testing fetcher4,271MIT OR Apache-2.0 spider_chromiumoxide_pdlContains a PDL parser and rust generator637,374MIT OR Apache-2.0 spider_chromiumoxide_typesContains the essential types necessary for using chromiumoxide636,657MIT OR Apache-2.0 spider_cliThe fastest web crawler CLI written in Rust.1,814,008MITCommand line utilitiesWeb programming spider_fingerprintFingerprint library for Rust.1,262,348MITCommand line utilitiesWeb programming spider_firewallFirewall to use for Spider Web Crawler.51,864MITCommand line utilitiesWeb programming spider_mcpMCP (Model Context Protocol) server exposing Spider web crawler capabilities as tools.4,169MITCommand line utilitiesWeb programming spider_network_blockerWeb crawler network blocking urls and patterns.1,129,708MITCommand line utilitiesWeb programming spider_remote_cacheShared remote cache upload worker for spider and chromey9,487MITCachingWeb programming spider_scraperA css scraper using html5ever51,965MITWeb programming spider_size_of_testservo size of test1,144MPL-2.0