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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.

fast_delegate_derivedelegate struct easy3,856MIT fast_deleteFaster file deletion written in Rust, alternative to rm1,713non-standardCommand line utilitiesDevelopment tools fast_enum_conversionZerocost conversion between enums1,236MITData structures fast_enum_conversion_macroZerocost conversion between enums1,542MIT fast_escapeSimple, fast escaping of characters.3,931MITNFANo standard libraryRust patterns fast_fairIt's my first library on crates.io!1,819MIT fast_filesFile directory storage UI for fast access and sorting2,592MIT OR Apache-2.0 fast_finderFast Find is a cli written in rust using rayon parrellism for super fast results.4,228MIT fast_firestorefast, plug and play firestore lib11,214MITDatabase interfaces fast_fmtThis crate provides faster, more flexible and more correct alternative to core::fmt11,299MITNFANo standard libraryRust patterns fast_forwardQuering collections blazing fast.2,774MITCachingData structures fast_fpFloating point fast-math optimizations7,278MIT OR Apache-2.0Mathematics fast_h2mHigh-performance HTML to Markdown converter156MITParsing toolsText processing fast_h2m_pyPython bindings for fast_h2m96MITText processingWeb programming fast_hammingA library that provides functions to encode/decode 16-byte byte-arrays using a Hamming Code1,518Apache-2.0 fast_hilbertFast Hilbert 2D curve computation using an efficient Lookup Table (LUT).185,006MITAlgorithmsScience::Geospatial fast_html2mdA fast html2md crate for rust278,296MITDevelopment toolsParser implementations fast_html5everHigh-performance browser-grade HTML5 parser122,358MIT OR Apache-2.0Parser implementationsWeb programming fast_id_mapfast map2,110MIT fast_image_resizeLibrary for fast image resizing with using of SIMD instructions16,364,040MIT OR Apache-2.0 fast_inputFast and easy input from standard in, made for competetive programming11,411MITParsing tools fast_inv_sqrtFast inverse square root algorithm implementation.10,375WTFPL OR MIT OR Apache-2.0 fast_ioLibrary crate to read and write &str and types implementing the copy trait into files11,510Apache-2.0Parsing tools fast_loaded_dice_rollerRust implementation of the novel Fast Loaded Dice Roller algorithm (https://arxiv.org/pdf/2003.03830.pdf)9,525MIT fast_logRust async log High-performance asynchronous logging334,238MIT fast_markup5everCommon code for xml5ever and html5ever116,563MIT OR Apache-2.0Parser implementationsWeb programming fast_morphologyFast morphological operations for images22,017BSD-3-Clause OR Apache-2.0Multimedia::Images fast_motion_planningThe crate provides a solver api which samples from motion primitives in order to efficiently generate trajectories which avoid…1,579MIT fast_new_typeA proc_macro attribute to implement common traits for a custom type wrapping other.12,478UnlicenseNo standard libraryRust patterns fast_ntfsForked a low-level NTFS filesystem library31MIT OR Apache-2.0FilesystemNo standard library fast_odeFast Runge-Kutta implementation for solving ordinary differential equations.11,408MIT OR Apache-2.0AlgorithmsMathematics fast_pathsFast shortest path calculations on directed graphs made possible by pre-processing the graph using Contraction Hierarchies24,104MIT/Apache-2.0AlgorithmsData structures fast_plA plane-sweep implementation to compute persistence landscapes3,701AGPL-3.0-or-laterAlgorithmsMathematics fast_poissonAn implementation of Bridson's algorithm for fast Poisson disk sampling49,446MIT OR Apache-2.0Algorithms fast_polynomialFaster polynomial evaluation using Estrin's Scheme to exploit instruction-level parallelism56,920MITAlgorithmsNo standard library fast_poolThe Fast Pool based on channel122,312Apache-2.0Caching fast_qrGenerates optimized QRCode332,214MITMultimediaMultimedia::Encoding fast_radix_trieMemory-efficient trie data structures based on radix tree3,365MITData structuresNo standard library fast_randsNon-cryptographically, but quite fast, RNG implementations678MIT OR Apache-2.0Embedded developmentNo standard library fast_reqwesthigher level HTTP client library1,597MIT OR Apache-2.0WebAssemblyWeb programming::HTTP client fast_rsyncAn optimized implementation of librsync in pure Rust.111,714Apache-2.0 fast_runnerA tool to search files2,764Apache-2.0Command line utilities fast_scraperHTML parsing and querying with CSS selectors7,997ISC fast_setA set of usize with O(1) creation, add, remove, contains, and clear functions.2,779AGPL-3.0-or-later fast_slabfast slab allocator1,018MIT fast_streamstream1,409MIT fast_symspellSpelling correction & Fuzzy search22,715MIT fast_textBinding for Facebook's FastText package.6,565MIT fast_timeAn efficient low-precision timestamp source suitable for high-frequency querying38,166MIT fast_transposeFast image and matrix transpose16,242BSD-3-Clause OR Apache-2.0AlgorithmsMultimedia::Images fast_trieA memory efficient trie library.3,681MITAlgorithmsData structures fast_trie_treeA fast `TrieTree` for multiple data types5,182MIT fast_tupleThis is a Rust procedural macro library that provides an easy way to construct and annotate tuples.5,923UnlicenseNo standard library fast_uaparserRegex-based parser for User-Agent request headers8,578Apache-2.0Parsing tools fast_utcSimple & fast 64 bit UTC time types279MIT OR Apache-2.0 fast_vkRelatively low-level VK API library designed for millions requests per second23,107MIT fast_websocket_clientTokio-native WebSocket client for Rust. High-throughput, low-latency, callback-driven, proxy-ready.483,222Apache-2.0AsynchronousConcurrency fast_whitespace_collapseCollapse consecutive spaces and tabs into a single space using SIMD826MITText processing fastaTools for FASTA reading, writing and indexing.7,378MIT OR Apache-2.0 fasta-cleanerTransform fasta files by upper-casing all sequence characters and removing non-ACGT sequence characters.2,436BSD-2-Clause fasta-filterFilter a (multi-sequence) FASTA file and output a subset of the records on STDOUT1,236MIT fasta-statsSimple descriptive statistics on FASTA (biological sequence) data4,546MIT fasta_rsMulti purpose fasta toolkit353Apache-2.0Command line utilities fasta_splitSplit a fasta file into several fasta files4,550non-standard fasta_toolsSome tools that are 'internal' for now because they are insufficiently refined and unstable, but which are used by other 'public'…29,432MIT fasta_windowsMake quick statistics in windows from a fasta file.2,941MITCommand line utilitiesScience fastagentfastagent493MITDevelopment tools fastallocHigh-performance memory pooling library with type-safe handles, predictable latency, and zero fragmentation. Perfect for game…671MITData structuresEmbedded development fastantA drop-in replacement for `std::time::Instant` that measures time with high performance and high accuracy powered by Time Stamp…10,816,300MIT fastanvilMinecraft Anvil library83,207MIT OR Apache-2.0 fastapiCompile time generated OpenAPI documentation for Rust1,880MIT OR Apache-2.0Web programming fastapi-configConfig for controlling fastapi's various aspects1,445MIT OR Apache-2.0Web programming fastapi-coreCore types and traits for the FastAPI Rust framework6,221MIT OR Apache-2.0 fastapi-genCode generation implementation for fastapi1,302MIT OR Apache-2.0 fastapi-httpZero-copy HTTP/1.1 parser for fastapi_rust6,126MIT OR Apache-2.0AsynchronousNetwork programming fastapi-macrosProcedural macros for fastapi_rust6,194MIT OR Apache-2.0Development tools::Procedural macro helpersWeb programming fastapi-openapiOpenAPI 3.1 types and schema generation for fastapi_rust6,264MIT OR Apache-2.0 fastapi-outputAgent-aware rich console output for fastapi_rust15,607MIT OR Apache-2.0Command-line interfaceDevelopment tools fastapi-routerTrie-based router for fastapi_rust6,359MIT OR Apache-2.0 fastapi-rustUltra-optimized Rust web framework inspired by FastAPI6,021MIT OR Apache-2.0AsynchronousWeb programming fastapi-typesShared types for the FastAPI Rust framework6,385MIT OR Apache-2.0 fastapproxFast approximate versions of certain functions that arise in machine learning84,708MIT fastarFast tar archive creation for HDDs9,434GPL-3.0Command line utilitiesFilesystem fastarenaA zero-dependency, bump-pointer arena allocator with RAII transactions, nested savepoints, optional LIFO destructor tracking, and…237MITData structuresMemory management fastarpFast ARP network scanner for local subnet host discovery42MITCommand line utilitiesNetwork programming fastarp-coreFast ARP scanning library for local subnet host discovery101MITNetwork programming fastarsUltra-fast QC and trimming for short and long reads22MITCommand line utilitiesScience fastatomstructA Python package for the analysis of atomic structures and dynamics10,274GPL-3.0 fastatsCLI to generate FASTA file statistics (masking, GC content, etc.).404Apache-2.0Command line utilitiesScience::Bioinformatics::Genomics FastatsplitA modest program written in rust made to store wanted and unwanted FASTA sequences to different FASTA files. Born from the…1,393MIT fastaxMake phylogenetic trees and lineages from the NCBI Taxonomy database9,889MITCommand line utilitiesScience fastbaps-coreFast Bayesian hierarchical clustering of bacterial populations (core algorithms)42MITAlgorithmsScience fastbitA fast, efficient, and pure Rust bitset implementation for high-performance data indexing and analytics.7,208MITAlgorithmsData structures fastbloomThe fastest Bloom filter in Rust. No accuracy compromises. Full concurrency support and compatible with any hasher.15,964,734MIT OR Apache-2.0AlgorithmsCaching fastbloom-rsSome fast bloom filter implemented by Rust for Python and Rust!298,532Apache-2.0AlgorithmsData structures fastblurLinear-time gaussian blur18,677MIT fastboop-bootprostd boot profile compilation and optimization helpers for fastboop.114GPL-3.0-only fastboop-cliCLI for non-mutating live boots on fastboot-class devices.286GPL-3.0-only fastboop-coreCore profile matching and boot orchestration primitives for fastboop.737GPL-3.0-only fastboop-fastboot-rusbrusb transport adapter for fastboop fastboot sessions.401GPL-3.0-only fastboop-fastboot-webusbWebUSB transport adapter for fastboop fastboot sessions.294GPL-3.0-only fastboop-schemaSchema types for fastboop device and boot profiles.809GPL-3.0-only fastboop-stage0-generatorBuilds fastboop stage0 payloads from upstream rootfs artifacts.407GPL-3.0-only fastboot-protocolFastboot protocol implementation12,708MIT OR Apache-2.0 fastbreakA formal methods-inspired specification language combining Alloy, TLA+, Cucumber, and Design by Contract147MITCommand line utilitiesDevelopment tools fastbufsingle-thread-oriented very fast byte buffer40,752MIT fastcA safe C-like language that compiles to C11105MITCompilersDevelopment tools fastc-lspLanguage Server Protocol implementation for FastC21MITCompilersDevelopment tools fastcacheA performant but not-so-accurate time and capacity based cache for Rust.697,026MIT OR Apache-2.0Caching fastcatFast string concatenation, with const-str support built in.43MIT OR Apache-2.0No standard libraryRust patterns fastcat-macroProcedural macro powering fastcat.54MIT OR Apache-2.0 fastcdcFastCDC (content defined chunking) in pure Rust.1,084,163MIT fastcdc-altFastCDC (content defined chunking) implementation in pure Rust with an alternative API to the original crate8,390MIT fastcertA simple zero-config tool for making locally-trusted development certificates261BSD-3-ClauseCommand line utilitiesDevelopment tools fastcgiFastCGI library written in pure Rust38,114MIT fastcgi-clientFastcgi client implemented for Rust.62,625Apache-2.0 fastcgi-connectFastcgi client implemented for Rust.22Apache-2.0 fastcgi-healthcheckFastcgi healthcheck, power by kvarn-fastcgi-client, axum and tokio.1,489GPL-3.0Network programmingWeb programming::HTTP server fastcgi-sdkFastCGI SDK for Rust7,868BSD-3-Clause fastcgi-serverfastcgi-server883Apache-2.0 OR MIT fastchemailCheck email address6,364MPL-2.0 fastchrFaster memchr using SIMD intrinsics6,410MIT OR Apache-2.0 fastcmpA fast byte slice comparison library20,416MITAlgorithms fastcodeFast to writing your code with extension function and popular crates.286MIT fastcomments-sdkOfficial FastComments Rust SDK (Typed API Client & Utilities)214MITAPI bindingsWeb programming fastcommitAI-based command line tool to quickly generate standardized commit messages.1,447MIT fastcontainsfastcontains, the faster contains778MIT fastcountan incredibly fast, incredibly useless counter89GPL-3.0-or-later fastcpA fork of smoltcp, tuned for ultra-low-latency networking.1650BSDEmbedded developmentNetwork programming fastcp-clia fast cp wrapper using --reflink=always88GPL-3.0-or-later fastcryptoCommon cryptographic library used at Mysten Labs1,162,344Apache-2.0 fastcrypto-deriveCollection of useful cryptographic macros1,107,759Apache-2.0 fastcrypto-tblsThreshold BLS and DKG protocols1,508Apache-2.0 fastcrypto-zkpzk-proof library used at Mysten Labs10,891Apache-2.0 fastcsvA fast SIMD parser for CSV files as defined by RFC 4180, based on simdcsv (C++)83MITParsing toolsText processing fastcurve_3dLibrary for 3D and 2D fast curve generation40,876non-standardGamesGraphics fastcwtRust-lang Continuous Wavelet Transform(CWT) library inspired by fCWT.12,634MIT OR Apache-2.0 fastdateRust fast date carte347,773Apache-2.0 fastdedupA fast and memory-efficient FASTX PCR deduplication tool110MITCommand line utilitiesScience fastdfsRust client for FastDFS distributed file system72MIT OR Apache-2.0AsynchronousFilesystem fastdivPerform fast division by a runtime constant.29,872MIT fastdivideFastdivide is a partial port of libdivide. It makes it possible to reduce the cost of divisions.17,999,746zlib-acknowledgement OR MITData structuresDatabase implementations fastdlThis repository is deprecated, Go to libfastdl instead3,596MPL-2.0 fastduParallel, cross-platform version of du369MIT fastedgeFastEdge Rust SDK that helps you to create edge cloud application using WASM8,917Apache-2.0Network programmingWebAssembly fastedge-deriveProcedural macros for the FastEdge Rust SDK9,591Apache-2.0WebAssemblyWeb programming fastembedLibrary for generating vector embeddings, reranking locally.2,237,229Apache-2.0 fastemporalLuxon + Temporal, but in pure Rust — 100× faster, zero GC39MIT OR Apache-2.0Date and timeWebAssembly fastenA set of scripts to run basic analysis on fastq files16,462MITCommand line utilitiesScience fasterExplicit SIMD for humans26,103MPL-2.0API bindingsHardware support faster-beamerAn incremental compiler for LaTeX Beamer slides13,751GPL-3.0-or-later faster-buildSimple and smart language-agnostic task runner5,435GPL-3.0-or-laterCommand line utilitiesDevelopment tools faster-chars-countLibrary for counting length of chars faster than Chars::count()8,214MIT faster-fishersRust version of Scipy's Fisher exact test.4,003MIT faster-hexFast hex encoding.50,704,134MIT faster-hex-thiserrorFast hex encoding.249MIT faster-pestA generator for high-performance Pest parsers, bringing your grammar to the next level9,217GPL-3.0-or-later faster-pest-deriveproc-macro for faster-pest8,566GPL-3.0-or-later faster-pest-generatorproc-macro for faster-pest2,466GPL-3.0-or-later faster-rsRust wrapper for FASTER by Microsoft Research29,203MIT faster-stunFast and zero-cost stun message decoder and encoder.42,795GPL-2.0-or-laterNetwork programmingParsing tools faster-whisper-rsHigh-level rust bindings to the faster-whisper python api.4,774MIT OR Apache-2.0API bindingsScience faster_bloomA standard and scalable Bloom filter implementation in Rust with configurable error tolerance and automatic scaling20MITAlgorithmsData structures faster_kvsRust wrapper for FASTER by Microsoft Research1,888MIT faster_pathAlternative to Pathname2,562MIT OR Apache-2.0 faster_pathsBlazingly fast shortest paths with (parallel) preprocessing via contraction hierarchies and hub labeling18MIT OR Apache-2.0AlgorithmsData structures faster_poissonFast Poisson disk sampling2,239MITAlgorithmsGraphics fasterpHigh-performance FASTQ preprocessing tool - often faster than fastp with the same interface108MITCommand line utilitiesScience fastersFIX & FAST (FIX Adapted for STreaming) in pure Rust.8,292MITEncodingNetwork programming fasters_deriveCode generation for Fasters5,122MITEncodingNetwork programming fastevalFast evaluation of algebraic expressions300,069MITMathematicsParser implementations fasteval-replFast evaluation of algebraic expressions1,780MITMathematicsParser implementations fasteval2Fast evaluation of algebraic expressions31,854MITMathematicsParser implementations fasteval3Fast evaluation of algebraic expressions3,035MITMathematicsParser implementations fastexcelA fast excel reader for Rust and Python2,527MIT fastexifExif metadata reader.25MITEncoding fastexpr-rsA tiny, fast Javascript expression parser3,388MITAlgorithmsParsing tools fastfetch-sysA neofetch like system information tool697MIT fastfibonacciFast Fibonacci encoding/decoding8,854 GPL-3.0-or-laterAlgorithmsCompression fastfield_codecsFast field codecs used by tantivy1,358,571MIT fastfileSequentially read and write files as fast as possible1,853MIT fastfindFast parallel find — a drop-in GNU find replacement for AI agents and large codebases81MIT OR Apache-2.0Command line utilitiesFilesystem fastfloatFast-math wrapper and convenient numeric functions for approximate floating point operations in Rust6,304MIT OR Apache-2.0 fastforgeThe ultimate all-in-one app packaging and distribution tool296MIT fastformatFast world data converter1,348MIT fastforwarda library for implementing custom reverse proxies13,537MITNetwork programmingWeb programming fastfwdFast-forward the workflow25Apache-2.0 fastga-rsRust bindings for FastGA genome aligner with extended CIGAR support497MITAPI bindingsScience fastgeotoolkitA novel high-performance geospatial analysis framework with advanced route density mapping algorithms17,993MITAlgorithmsData structures fastgifMakes GIFs fast1,929MITGraphicsMultimedia::Encoding fastgptA CLI client for Kagi's FastGPT API2,966MITCommand line utilitiesWeb programming fastgraphGraph abstraction providing a generic interface and powerful parallelized traversals.5,549MIT/Apache-2.0Data structures fastgrepFast parallel grep with SIMD-accelerated search and trigram indexing334MIT OR Apache-2.0Command line utilitiesText processing fastgymA set of fast gym environements1,677MIT fasthashA suite of non-cryptographic hash functions for Rust.756,542Apache-2.0 fasthash-forkA suite of non-cryptographic hash functions for Rust - Forked to release current code-base.3,901Apache-2.0 fasthash-sysA suite of non-cryptographic hash functions for Rust.773,499Apache-2.0 fasthash-sys-forkA suite of non-cryptographic hash functions for Rust.4,911Apache-2.0 fasthexa very fast hex dumper183GPL-3.0-or-later fasthooksBlazing fast Git hooks manager written in Rust. Drop-in replacement for Husky with 27x faster startup.49MITCommand line utilitiesDevelopment tools