All 305,250 crates, alphabetically

slop-symmetricRe-exports p3_symmetric from Plonky3 for SLOP406,139MIT OR Apache-2.0Cryptography slop-tensorN-dimensional tensor operations for polynomial proof systems322,193MIT OR Apache-2.0Cryptography slop-uni-starkRe-exports p3_uni_stark from Plonky3 for SLOP321,219MIT OR Apache-2.0Cryptography slop-utilsUtility functions and logger setup for SLOP321,839MIT OR Apache-2.0Cryptography slop-veilVerifiable Encapsulation of Interactive proofs with Low overhead145MIT OR Apache-2.0Cryptography slop-whirWHIR polynomial commitment scheme for SLOP320,838MIT OR Apache-2.0Cryptography slopcA proc macro that calls an LLM to generate function implementations at compile time. Because why tf not.41AGPL-3.0-onlyDevelopment tools::Procedural macro helpers slopeYet another (WIP) UI framework for Rust20MIT OR Apache-2.0 slophammerReserved top-level package for Slophammer; install slophammer-rs for the Rust CLI.17MITCommand line utilitiesDevelopment tools slophammer-rsRust implementation of the Slophammer repository quality checker.218MIT sloppifySloppify your codebase to reduce LLM training20MITCommand line utilities sloppyA binary package to run sloppy script.3,779MIT sloppy-coreA package to support multiple scripting language within Rust.4,456MIT sloppy-joeDetect hallucinated, typosquatted, and non-canonical dependencies226Apache-2.0Command line utilitiesDevelopment tools sloppy-rfc4880RFC 4880 parser extract from the openpgp crate42,189Apache-2.0Parser implementations slosh2dCross-platform GPU 2D Material Point Method implementation.766Apache-2.0 slosh3dCross-platform GPU 3D Material Point Method implementation.1,413Apache-2.0 slosh_testbed2dTestbed for the slosh GPU-based MPM physics simulation library (2D version).257Apache-2.0 slosh_testbed3dTestbed for the slosh GPU-based MPM physics simulation library (3D version).753Apache-2.0 slottype-shaped chunk of memory11,351MIT OR Apache-2.0 slot-arenaCompacted memory allocation using opaque references.3,227MIT slot-cellSlotCell - an interior mutability container. It acts as a "Runtime-Checked Move Cell", providing owned access to data rather than…92Apache-2.0Data structuresNo standard library slot-clislot - A symbolic link organizer with toml.2,225MIT slot-range-helperHelper crate for generating slot ranges for the Polkadot runtime.831,289GPL-3.0-only slot-vecA high-performance, reusable slot container for Rust, providing efficient insertion, removal, and iteration of elements.65non-standardData structuresMemory management slot_generatorEfficiently generate and reclaim slot IDs from a numerical range2,358ZlibAlgorithms slot_machineBluejay Bonanza Slot Machine6,516MIT OR Apache-2.0Game engines slotbusLock-free shared memory IPC with slotted request/response. Sub-microsecond wake latency, zero-copy payloads, 32 concurrent…268MITConcurrencyNetwork programming slotbus-ffiC FFI bindings for the slotbus shared-memory IPC library22MITAPI bindingsExternal FFI bindings slotbus-hubHTTP-to-SHM router with worker SDK. Workers register routes, clients send HTTP — slotbus-hub dispatches via shared memory with…76MITCommand line utilitiesNetwork programming slotgateA bounded-parallelism job runner that gives each slot its own disjoint port range, so port-binding tests run in parallel without…15MITCommand line utilitiesDevelopment tools::Testing slotgraphGraph implementation built with slotmap and petgraph3,640Apache-2.0Data structures slothProvides a generic wrapper struct for lazy initialization.88,185MIT OR Apache-2.0Caching sloth-clientSloth client for backuping small data files to a server1,505Apache-2.0 sloth-serverSloth server for backuping small data files from a client1,466Apache-2.0 sloth256-189Encoder/decoder for the Subspace Network Blockchain based on the SLOTH permutation46,510MIT/Apache-2.0 slothlangA weird, slow and a bit moldy interpreted programming language17,641Apache-2.0Compilers slothunterA bot for Polkadot parachain auction.9,177GPL-3.0 SlotListSquatting on the name as an alternative to fast-list1,482Apache-2.0Data structures slotmapSlotmap data structure88,263,233ZlibCachingData structures slotmap-carefulWrap the slotmap crate and prevent key reuse531,213MIT OR Apache-2.0Data structures slotmap-fork-otterSlotmap data structure - temporary fork for Otter6,722ZlibCachingData structures slotmap-mapSlotmap data structure1,927ZlibCachingData structures slotmap-slice-forkFork of slotmap82ZlibCachingData structures slotmap_fork_lmondadaSlotmap data structure120,909ZlibCachingData structures slotmap_microlibA micro library for slot map data structure20MIT OR Apache-2.0Data structuresNo standard library slotmapdorlp/slotmap fork where serialization cycle doesn't change observable behavior66,510ZlibCachingData structures slotmapvecDeprecated: use slotmap6,230MITData structures slotpollerBounded, lock-free futures collection. Faster than FuturesUnordered and other crates.43Apache-2.0Rust patterns slotpoolFixed-capacity object pools for no_std / embedded systems67MIT OR Apache-2.0Embedded developmentMemory management slotsFixed size data structure with constant-time operations8,817MITData structuresNo standard library slots-sliceProvides utilities for manipulating slices of optional values.1,498MIT-0Rust patterns slotstrikeLow-latency Solana slotstrike runtime for event-driven token execution56MITAsynchronousCommand line utilities slotted-egraphsE-Graphs with name binding31,260Apache-2.0 OR MIT slotted-egraphs-deriveproc macros to implement slotted Languages9,434Apache-2.0 OR MIT slottleA throttle pool library designed for thread-based concurrency.8,948MITConcurrency slouchSimple OUCH 5.0 client & message types for order entry.408MITFinanceNetwork programming sloughiA tiny, no-dependencies crate to make it easy to share and apply git hooks for Rust projects6,176Apache-2.0Development tools slowSlow24MITCommand line utilities slow-scan-printText is printed at fixed intervals by character or by line, and its name is inspired by SSTV (Slow Scan Television).7,030MITCommand-line interfaceCommand line utilities slow5Library for interacting with slow520,257MIT OR Apache-2.0 slow5libRust re-implementation of slow5lib: read and write SLOW5/BLOW5 nanopore sequencing files16MITParser implementationsScience slow5lib-sysLow-level bindings to the slow5lib C library20,827MIT OR Apache-2.0 slow_function_warningA simple macro that prints a warning if a function takes longer than expected16,090MITDevelopment tools::Profiling slow_nnA slow neural network library7,671MIT slow_primesDeprecated in favour of `primal`. A library to generate, identify and handle prime numbers and related properties. This library…426,831MIT/Apache-2.0 slowcatPrints the contents of files with a specified delay between each line.1,438MIT slowchop_consoleA Quake style console and log plugin for Bevy.5,201MIT OR Apache-2.0Command-line interfaceGame development slowchop_console_deriveA Quake style console and log plugin for Bevy.5,645MIT OR Apache-2.0Command-line interfaceGame development slowerRate limit stdout output1,640MITCommand line utilities slowlockSlowLock convenience wrapper for processing cipher password with a proof of work function2,866MIT/Apache-2.0 slowlogA parser for MySQL slow query logs that anonymises queries by replacing literals with placeholders.60MITDatabase interfacesParser implementations slowlorisThe slow loris attack, now implemented in Rust!10,725MITCommand line utilitiesWeb programming slowlorustLightweight slowloris (HTTP DoS) implementation in Rust.2,707MITCommand line utilities sloword2vecA naive implementation of word2vec3,532MIT slowprintA small library for printing texts slowly which gives scrolling effect to the texts shown.2,801MITCommand-line interfaceCommand line utilities slowrxPure-Rust SSTV (Slow-Scan TV) decoder library — a port of slowrx by Oona Räisänen417MITMultimediaScience sloxPackage Manager written in rust153LGPL-3.0-only slox-cliPackage Manager written in rust213LGPL-3.0-only slox-corePackage Manager written in rust168LGPL-3.0-only slox-shimPackage Manager written in rust217LGPL-3.0-only slozhngRPC over WebSocket for native and wasm: full streaming, reconnect, transparent resume95MITNetwork programmingWebAssembly slozhn-clienttonic-compatible gRPC channel over slozhn frame streams113MIT slozhn-frameEnvelope protocol and stream-multiplexing state machine for slozhn188MIT slozhn-middlewareReady-made tower layers for slozhn: tracing/logging (OTel semconv), retries77MIT slozhn-protoGenerated protocol types for slozhn (do not edit; easyp generate)196MIT slozhn-serverBridge: slozhn frame streams -> tonic services99MIT slozhn-sessionResume layer for slozhn: seq/ack/replay, streams survive reconnects136MIT slozhn-wsCross-platform WebSocket byte duplex for slozhn116MIT slpLinear Programming Solver18,064MITScience slp-cliSolHOP Linear Programming Solver1,328MITScience slpm-fileThe official tools for the open .slpm file format made for the StainLessPasswordManager5,264MIT slpzCompresses and decompresses between the slp and slpz Slippi replay formats.5,592MIT OR Apache-2.0Command line utilitiesCompression slqSearch stockholms lokaltrafik for stations and times in the command line170BSD-3-Clause slr_configA simple configuration format37,396LGPL-3.0 slr_lexerA simple configuration format. This crate contains just the lexer, see the slr_config crate for the parser and other utilities.22,244LGPL-3.0 slr_parserA simple configuration format. This crate contains the parser, see the slr_config crate for a more user-friendly API.17,923LGPL-3.0 slsStochastic L-systems1,752Apache-2.0 slsa-exampleSLSA example for Rust project2,339MIT OR Apache-2.0 slsgScriptable Lua Site Generator1,603GPL-3.0-onlyCommand line utilitiesTemplate engine slslExperimental CPU tensor library with multi-DType support, leveraging SIMD, multithreading, and BLAS-style acceleration.5,663MIT slsqpSLSQP optimizer for Rust39,684non-standardAlgorithmsScience slsqp-rsslslsqp rust impl, ported from scipy Fortran impl39MIT SLSRSlither Link Solver written in Rust.3,740MIT sltunnelA simple TLS tunneling implementation, written in Rust.1,543MIT slubSlub is an enhanced version of slab.1,535MIT/Apache-2.0 sluceSupra-Laplacian Unified Context Engine — learned multi-layer context for AI-assisted development21AGPL-3.0-only sludgeA native GTK4/libadwaita Slack client for the Linux desktop52GPL-3.0-or-later sludge-ar-with-ranlibA library for encoding/decoding Unix archive files.1,755MIT sludge-cicdPersonal CI/CD tool for Rust crates27,417MIT OR Apache-2.0 slugConvert a unicode string to a slug36,121,953MIT/Apache-2.0 slug-preserveCase-preserving slugifier with Unicode PUA sentinel support (internal to fren)153MIT slug_generatorGenerate URL-friendly slugs from strings10MIT slug_generator_plusEnhanced URL slug generator with optimizations8MIT slug_intlSlugify strings while preserving printable Unicode characters for modern browsers.3,283MITInternationalization (i18n)Value formatting slugencodeThe swiss-army life library for encoding and decoding formats including Hex, Base32, Base58 (not ct), and Base64 in a…1,079Apache-2.0CryptographyEncoding sluggifySimple slug or clean url generator for rust. With default settings, you will get an hyphenized, lowercase, alphanumeric version…3,588MIT sluggish-write...95LGPL-3.0-or-laterDevelopment tools::Testing slugiA simple Rust library to slugify text (e.g., 'Café au lait' → 'cafe_au_lait').484MIT slugidSlugId generation for Rust29,879MPL-2.0 slugifyMacro for flexible slug generation958,386MITRust patternsText processing slugify-coreFast, Unicode-aware slug generation library with multi-language bindings390MIT OR Apache-2.0 slugify-filenamestool to "slugify" strings and filenames, available as a rust library and as two standalone command-line binaries. The…65GPL-3.0+Filesystem slugify-rsA rust library to generate slugs from strings241,393non-standardRust patternsText processing slugminSlug version which allows to use spaces and big letters.9,482MIT/Apache-2.0 slugomatic🐌 A simple CLI tool to slugify and unslugify text, perfect for branch names and URLs1,654MIT OR Apache-2.0Command line utilitiesText processing slugrRename files and directories to clean, URL and shell-friendly slugs — or pipe arbitrary text through for slugification58BSD-3-ClauseCommand line utilitiesFilesystem slugrsA fast, locale-aware slugify library for Rust2,689MITText processing sluiceEfficient ring buffer for byte buffers, FIFO queues, and SPSC channels15,895,461MITAsynchronousConcurrency sluice-cliCLI that parses Maven Central index chunks into JSON Lines.134Apache-2.0Command line utilitiesParser implementations sluice-rsPure-Rust parser for the Maven Central binary index format.175Apache-2.0EncodingParser implementations sluicifyAF_UNIX command broker with declarative whitelist and fd-passing. Ships the `sluice` daemon and the `sluicify` client.16MIT OR Apache-2.0Command line utilitiesOperating systems::Linux APIs slumFleet orchestrator for tenement servers44Apache-2.0 slumberTerminal-based HTTP client66,889MIT slumber-reqwestfork of reqwest for slumber [DO NOT USE]35MIT OR Apache-2.0WebAssemblyWeb programming::HTTP client slumber_cliCommand line interface for Slumber. Not intended for external use.17,103MIT slumber_configConfiguration for Slumber. Not intended for external use.18,585MIT slumber_consoleUtitilies for console-based Slumber frontends. Not intended for external use.403MIT slumber_coreCore library for Slumber. Not intended for external use.18,313MIT slumber_importImport from other formats to Slumber collections. Not intended for external use.9,779MIT slumber_macrosProcedural macros for Slumber. Not intended for external use.3,658MIT slumber_templateTemplate engine for Slumber. Not intended for external use.3,665MIT slumber_tuiTerminal user interface for Slumber. Not intended for external use.17,156MIT slumber_utilCommon utilities used across several subcrates of Slumber. Not for external use.7,884MIT slumpMinimal generator of randomness40MIT slungAn abstraction library for interacting with the Slung runtime.58MIT slung-macrosAn abstraction library for interacting with the Slung runtime.137MIT slurA fast, iterative, correct approach to Stackblur, resulting in a very smooth and high-quality output, with no edge bleeding3,374MITAlgorithmsGraphics slurfRust PostgreSQL driver1,395MIT OR Apache-2.0 slurmInterface to the Slurm workload manager.5,935MITConcurrencyScience slurm-spankSafe Rust bindings to the Slurm SPANK API11,966MIT OR Apache-2.0 slurm-spank-compatSafe Rust bindings to the Slurm SPANK API3,867MIT OR Apache-2.0 slurm-sysLow-level FFI bindings to the libslurm and libslurmdb libraries.8,145MITConcurrencyExternal FFI bindings slurm-termA Terminal User Interface for the Slurm workload manager107MITCommand line utilities slurm_managerUtilities to create and manage SLURM jobs.18MIT slurmerA TUI application for monitoring and managing SLURM jobs.1,688MIT slurmplusA command-line tool for nice interaction with the Slurm workload manager.3,318MITConcurrencyScience slurpSmall wrapper methods for loading files72,798UnlicenseFilesystem slurp-rsRust implementation of slurp with CLI compatibility and reusable API174MITCommand line utilitiesGraphics slurpjsonjson parsing through compute shaders0Apache-2.0 slurryA crate for managing, analyzing, and creating SLURM jobs for HPC in Rust.2,852MIT OR Apache-2.0 slutStatic Linear Untiful Tensors. Library for Vectors and Matrices with Physical Dimensions. Basically `uom` but in a vector space.2,210MIT sluuzgit, but it sleuths — a git superset with cross-repo search, secret scanning, and multi-repo management383AGPL-3.0-only slvalias for silvestris1,610MIT OR Apache-2.0 slvsRust wrapper for the SolveSpace constraint solver library.6,273GPL-3.0API bindingsGraphics sly_static_macrosmacros for sly_static9,623MIT slycePython-like slices532,153BSD-2-Clause slycerYouTube audio downloader and chapter-based splitter378MITCommand line utilities slydeSliding puzzle in Ratatui596MITGames sm💋 SM – a static State Machine library1,878,926MIT OR Apache-2.0Game enginesNo standard library sm-2Rust Crate for SM-2 Spaced Repetition1,366MITAlgorithmsMathematics sm-ai-pose-generatorHigh-quality integration for https://supermaker.ai/image/ai-pose-generator/23MIT sm-cSelf Mutating Combiner (SM-C) for true randomness generation32MIT sm-cryptoA Rust Implementation of China's Standards of Encryption Algorithms(SM2/SM3/SM4)3,668MIT sm-extHelpers for writing SourceMod Extensions in Rust4,489GPL-3.0-or-laterAPI bindings sm-ext-deriveProcedural macro package for sm-ext helpers5,463GPL-3.0-or-later sm-pkgA sourcemod package manager22MIT sm-searchA simple way of searching through text - for people who are too lazy to use Regex3,718Apache-2.0 sm2Pure Rust implementation of the SM2 elliptic curve as defined in the Chinese national standard GM/T 0003-2012 as well as ISO/IEC…42,606Apache-2.0 OR MITCryptographyNo standard library sm2335eghDriver for the SM2335EGH LED controller found in the SwitchBot Color Bulb4,752MITEmbedded developmentHardware support sm2clA Rust library for SM2 Certificate Less556MIT OR Apache-2.0 sm2mmlStarmath 5.0 to MathMl converter. Use as a library or CLI tool.905GPL-3.0Command line utilitiesParser implementations sm3SM3 (OSCCA GM/T 0004-2012) hash function4,049,605MIT OR Apache-2.0CryptographyNo standard library sm4SM4 block cipher algorithm224,921MIT OR Apache-2.0CryptographyNo standard library sm4-ff1SM4 FF1 implementation2,810Apache-2.0 sm4-gcmSM4-GCM Library5,483MIT OR Apache-2.0Cryptography sm64-bindsMario 64 using WASM. Requires a US .z64 version ROM to work (8.00MB)630MIT OR Apache-2.0 sm64gs2pcConvert Super Mario 64 GameShark codes to SM64 PC port patches9,299MITGames sm9SM9 (OSCCA GM/T 0044-2016), identity-based cryptography15,530MIT OR Apache-2.0 sm9_coreSM9, identity-based cryptography22,082MIT OR Apache-2.0CryptographyNo standard library sm_3d_camera_controlHigh-quality integration for…27MIT sm_chatHigh-quality integration for https://supermaker.ai/chat/24MIT sm_connectA TUI tool to connect to AWS EC2 instances via SSM Session Manager112MIT sm_devMath operations with safety checks that throw on error1,933MIT sm_hellowa practice crate42MIT sm_macro💋 SM – a static State Machine macro1,871,075MIT OR Apache-2.0Game enginesNo standard library sm_motion_photoExtract video from Samsung Motion Photo. Supports JPEG, HEIF/HEIC14,077MIT sm_primitives...1,663MIT sm_tomusic_aiHigh-quality integration for https://tomusic.ai/26MIT sma-protoA Rust implementation of the SMA Speedwire protocol3,732AGPL-3.0-or-laterEncodingNetwork programming