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-2.0
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 words3,8160BSD
spellbookA spellchecking library compatible with Hunspell dictionaries102,092MPL-2.0
spellboundBindings to your friendly neighborhood spellchecker.3,070MIT OR Apache-2.0
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-2.0
spellcliA CLI that allows you to check the spelling of different words.44MIT
spellcode-cliMinimal CLI frontend for codebook.44GPL-3.0-or-later
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 puzzles1,654MIT
spelling_correctorA simple spelling corrector9,820MIT
spellingbeeGenerate potential solutions for the NYT spelling bee game3,878Apache-2.0
spelloutA phonetic code encoder/decoder42non-standard
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 browser26MIT
sperrHigh-level Rust bindings to the SPERR compressor7,994MPL-2.0
sperr-sysLow-level Rust bindings to the SPERR compressor9,108MPL-2.0
spewA simple helper for spawning objects in Bevy.31,489MIT OR Apache-2.0
spexSimple(ish) parser and extractor of XML6,990MPL-2.0
spezMacro to specialize on the type of an expression4,805,433BSD-2-Clause
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-2.0
spf-milterMilter for SPF verification22,829GPL-3.0-or-later
spf_crateexample crate for spf314MIT
spfrRecursively look up SPF records for a domain2,879AGPL-3.0-or-later
spfsThe future home of the software packaging file system1,627Apache-2.0
spftraceUtility for tracing SPF queries11,995GPL-3.0-or-later
spfuncRust crate for numerical calculation of special functions.42,303MIT
spgsecure password generator over CLI1,669non-standard
spg-auditAppend-only audit log with BLAKE3 hash-chain for SPG (compliance).1,523MIT OR Apache-2.0
spg-cliA CLI for initializing Spring Boot Projects34MIT OR Apache-2.0
spg-cryptoSelf-built cryptographic primitives for SPG: BLAKE3 hash, CRC32, no_std.3,472MIT OR Apache-2.0
spg-embeddedEmbedded SQL database for Rust. Single-writer, WAL-backed, crash-safe. Zero external dependencies. PG-flavoured SQL with FOREIGN…2,202MIT OR Apache-2.0
spg-embedded-tokioTokio-friendly async wrapper around spg-embedded. Single-writer Database serialised via tokio::sync::Mutex; blocking engine calls…1,643MIT OR Apache-2.0
spg-engineExecution engine for SPG: glues spg-sql parsing to spg-storage. Foreign keys, joins, vectors, cold tier.2,720MIT OR Apache-2.0
spg-manifestSPGMAN01 v10 catalog manifest format. Frozen wire/disk surface shared by spg-server and spg-embedded.2,651MIT OR Apache-2.0
spg-serverSPG daemon — listens for self-built wire-frame connections and PG-wire (libpq-compatible).1,198MIT OR Apache-2.0
spg-sqlSelf-built SQL front-end for SPG: PG-dialect lexer + parser. no_std + alloc.2,907MIT OR Apache-2.0
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-2.0
spg-wireSelf-built wire-frame protocol for SPG. no_std + alloc.1,750MIT OR Apache-2.0
spgctlSPG command-line client — speaks the self-built wire protocol.1,218MIT OR Apache-2.0
spglibRust bindings to spglib.6,869BSD-3-Clause
spglib-sysRaw Rust bindings to spglib.9,014BSD-3-Clause
sphSmoothed-particle hydrodynamics15MIT
sph2mmAdd an AMR background to an existing SPH initial conditions file5,352LGPL-3.0+
sphaleriteA dependency-free crate for binary serialization1,497MIT
spheneA high-performance, modern CLI tool for core image processing, editing, and pixel manipulation.18MIT
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-2.0
spherenet-badge-clientBadge program for on-chain attestations50Apache-2.0
spherenet-badge-interfaceBadge program for on-chain attestations71Apache-2.0
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-2.0
spherenet-regulated-token-clientGenerated Rust client for the Spherenet regulated token program34Apache-2.0
spherenet-regulated-token-interfaceInstructions and types for interacting with the regulated token standard34Apache-2.0
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 sphereQL343MIT
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 queries116MIT
sphereql-indexSpatial indexing and queries for sphereQL279MIT
sphereql-layoutLayout engine for sphereQL spatial positioning234MIT
sphereql-linguaLanguage to native SphereQL coordinates: text to (theta, phi, r)18MIT
sphereql-vectordbVector database connectors for sphereQL95MIT
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-2.0
spherical_blue_noiseBlue noise generator on a sphere.3,023MIT
spherical_geometryA package for working with spherical geometry4,526MIT
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 Rust42,383MIT
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-2.0
sphinx-rustdocgenExecutable to extract rustdoc comments for Sphinx18,430GPL-3.0-or-later
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-2.0
spiEmulator-focused SPI host controller implementation44MIT OR Apache-2.0
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 chips35,2140BSD
spi-memory-asyncA generic driver for different SPI Flash and EEPROM chips6,4460BSD
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-Clause
spice(Work in Progress) SPICE protocol implementation in Rust.1,948MIT
spice-clientA pure Rust SPICE client library with native and WebAssembly support4,238GPL-3.0
spice-client-glibRust bindings for the Spice client library9,033MIT
spice-client-glib-sysRaw C-FFI bindings for the Spice GLib library9,753MIT
spice-coordinatesCanonical content identifiers (content hashes + git blob ids) and package coordinates (purl) for software artifacts — the Rust…89Apache-2.0
spice-frameworkA Rust test framework for nondeterministic LLM agents213MIT
spice-sysThin wrapper for the C language implementation spice toolkit from NAIF1,674MIT
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_arrow22,104MIT
spicedb-clientErgonomic Rust gRPC client for SpiceDB5,801Apache-2.0
spicedb-embeddedEmbedded SpiceDB for Rust - embedded authorization using the standard gRPC API1,863Apache-2.0
spicedb-embedded-sysFFI and native library for SpiceDB C shared library (builds from Go or downloads prebuilt)1,685Apache-2.0
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-2.0
spicedb-rsSpiceDB wrapper3,525MIT
spicedb-rs-clientRust client for the SpiceDB/Authzed gRPC API.4,860Apache-2.0
spicedb-rs-protoGenerated Rust protobuf and gRPC bindings for SpiceDB/Authzed APIs.6,121Apache-2.0
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.1,691MIT
spicetimeThe spicy alternative to lifetime annotations.21MIT
spicexA complete configuration solution for Rust applications, inspired by Viper960MIT
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.2,054,210MIT
spider-browserBrowser automation client for Spider's pre-warmed browser fleet with smart retry and browser switching865MIT
spider-clientSpider Cloud client43,837MIT
spider-cloud-cliThe Spider Cloud CLI for web crawling and scraping28,042MIT
spider-coreCore functionality for the spider-lib web scraping framework.415MIT
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-2.0
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-2.0
spider-libA Rust-based web scraping framework inspired by Scrapy (Python).386MIT
spider-macroProc-macros for the spider-lib web scraping framework.461MIT
spider-markup5everCommon code for xml5ever and html5ever (Send-able fork via spider-tendril)17,151MIT OR Apache-2.0
spider-markup5ever_rcdomSend/Sync-friendly RcDom on the spider-* atomic-tendril fork stack4,399MIT OR Apache-2.0
spider-middlewareMiddleware implementations for the spider-lib web scraping framework.475MIT
spider-pipelinePipeline implementations for the spider-lib web scraping framework.525MIT
spider-rulesSpider/crawler identification rules1,247MIT
spider-tendrilSend-able tendril fork (atomic refcount) for high-concurrency HTML parsing17,277MIT OR Apache-2.0
spider-utilShared utility functions and types for the spider-lib ecosystem704MIT
spider-web-searchA tool for web search on your favorite sites.3,789MIT
spider_agentA concurrent-safe multimodal agent for web automation and research.17,684MIT
spider_agent_htmlHTML processing utilities for spider_agent — cleaning, content analysis, and diffing.17,627MIT
spider_agent_typesPure data types and constants for spider_agent automation. Zero heavy dependencies.80,670MIT
spider_chromeDEPRECATED: This crate has been renamed to `chromey`. Please update your Cargo.toml.1,015,342MIT OR Apache-2.0
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.1,814,008MIT
spider_fingerprintFingerprint library for Rust.1,262,348MIT
spider_firewallFirewall to use for Spider Web Crawler.51,864MIT
spider_mcpMCP (Model Context Protocol) server exposing Spider web crawler capabilities as tools.4,169MIT
spider_network_blockerWeb crawler network blocking urls and patterns.1,129,708MIT
spider_remote_cacheShared remote cache upload worker for spider and chromey9,487MIT
spider_scraperA css scraper using html5ever51,965MIT
spider_size_of_testservo size of test1,144MPL-2.0