All 305,250 crates, alphabetically

fasthttpA **fast** HTTP package for Rust.19MIT OR Apache-2.0Network programmingWeb programming fastidSnowflake-like ID generating in Rust11,890MIT fastimerRuntime-agnostic timer traits and utilities17,373Apache-2.0 fastimer-coreCore timer traits, types, and utilities for fastimer2,912Apache-2.0 fastimer-tokioFastimer integration for tokio runtime.3,425Apache-2.0 fastioFast cross-platform file I/O backends for Rust114Apache-2.0AsynchronousConcurrency fastixprefix renaming FASTA records2,080MITScience fastjet-rsA Rust implementation of the FastJet software package for jet finding.23GPL-2.0 fastjsonA fast Json parser1,994MIT fastkillInteractive CLI to kill process with port/pid/name5,144non-standard fastkmeans-rsA fast and efficient k-means clustering implementation in Rust, compatible with ndarray5,409Apache-2.0AlgorithmsScience fastkvA Redis-like CLI and TCP server in Rust56MITCommand line utilitiesDatabase interfaces fastkv-clientA lightweight, zero-dependency, ultra-fast client for the FastKV database server.20MIT fastlanesRust implementation of the FastLanes compression layout1,161,144Apache-2.0 fastlanes_rsWrapper for the FastLanes Compression Format C++ library1,581MIT fastlanezFastlanez1,388Apache-2.0 fastlanez-sysFastlanez1,417Apache-2.0 fastlemA Rust library for generating procedural terrains based on simplified landscape evolution model (LEM)7,312MPL-2.0 fastlengfastleng - read length statistics tool4,146MIT OR Apache-2.0 fastlibFAST (FIX Adapted for STreaming protocol) is a space and processing efficient encoding method for message oriented data streams.8,234MITEncodingParser implementations fastlinan ultra-fast program for MTBC lineage typing5,821MIT OR Apache-2.0 fastlintPolyglot linter that bundles best-in-class open-source checkers — making vibe coding safer and faster.17MIT OR Apache-2.0Command line utilitiesDevelopment tools fastlio_cxx_norosRust bindings for FAST_LIO LiDAR Inertial Odometry without the ROS dependency.71non-standard fastlio_rsPure-Rust reimplementation of the FAST-LIO2 LiDAR-inertial odometry algorithm88GPL-2.0Science::Robotics fastllmUnified LLM Gateway with Local Models in Rust20Apache-2.0 fastllm-coreUnified LLM Gateway with Local Models in Rust45Apache-2.0 fastLoessHigh-performance LOESS (Locally Estimated Scatterplot Smoothing)98MIT OR Apache-2.0AlgorithmsScience fastlogA high performance asynchronous logger10,375MIT/Apache-2.0 fastLowessHigh-performance LOWESS (Locally Weighted Scatterplot Smoothing)2,112MIT OR Apache-2.0AlgorithmsScience fastlyFastly Compute API6,918,154Apache-2.0 WITH LLVM-exceptionWebAssemblyWeb programming fastly-apiFastly API client61,354MITAPI bindingsWebAssembly fastly-kv-previewFastly Compute@Edge KV API previews13,731Apache-2.0 WITH LLVM-exception fastly-macrosFastly Compute procedural macro implementation6,854,268Apache-2.0 WITH LLVM-exceptionWebAssembly fastly-opentelemetry-exporterOpenTelemetry span exporter for Fastly Compute36MITDevelopment tools::DebuggingWeb programming fastly-sharedShared definitions for Fastly Compute6,874,459Apache-2.0 WITH LLVM-exceptionDevelopment tools::FFIWebAssembly fastly-sysFastly Compute ABI Bindings6,825,179Apache-2.0 WITH LLVM-exceptionExternal FFI bindingsWebAssembly fastly_rtRust library for Fastly Real time stats API1,663BSD-3-ClauseAPI bindingsWeb programming::HTTP client fastlzBindings to FastLZ compression and decompression.16,205MIT OR Apache-2.0API bindingsCompression fastlz-rsPure-Rust reimplementation of FastLZ12,7460BSDCompressionNo standard library::No dynamic allocation fastlz-sysRaw bindings to FastLZ18,375MIT OR Apache-2.0External FFI bindings fastmapSpecialized version of `HashMap` with H256 keys and fast hashing function.24,707GPL-3.0 fastmathsHigh-performance no_std math routines targeting glibc parity and strict f64 accuracy.37MITAlgorithmsMathematics fastmcpA Rust framework for building Model Context Protocol (MCP) services735Unlicense fastmcp-cliCLI tooling for FastMCP - run, inspect, and install MCP servers111MITCommand-line interfaceDevelopment tools fastmcp-clientMCP client implementation for FastMCP2,342MITNetwork programming fastmcp-consoleRich console output for FastMCP servers2,345MITCommand-line interfaceDevelopment tools fastmcp-coreCore types and context for FastMCP2,694MITDevelopment toolsNetwork programming fastmcp-deriveProcedural macros for FastMCP (#[tool], #[resource], #[prompt])2,241MITDevelopment tools::Procedural macro helpers fastmcp-macrosProcedural macros for FastMCP655Unlicense fastmcp-protocolMCP protocol types and JSON-RPC implementation2,608MITAPI bindingsNetwork programming fastmcp-rsRust prototype for the FastMCP server283MITWeb programming::HTTP server fastmcp-rs-macrosProcedural macros for fastmcp-rs (attribute-style).449MIT fastmcp-rustFast, cancel-correct MCP framework for Rust2,071MITAPI bindingsDevelopment tools fastmcp-serverMCP server implementation for FastMCP2,169MITDevelopment toolsNetwork programming fastmcp-transportTransport layer (stdio, SSE, WebSocket) for FastMCP2,429MITNetwork programming fastmemConfigurable utilities for fast memory operations3,019Apache-2.0 fastmemoryA Topology Ontological Clustering Engine for AI Agent Memory110MIT fastmetricsOpenMetrics / Prometheus client library in Rust.58,140Apache-2.0 fastmetrics-deriveSome derive macros for fastmetrics.6,329Apache-2.0 fastmetrics-processPrometheus-style process metrics built on fastmetrics.73Apache-2.0 fastmodFast, partial replacement for codemod (find/replace tool for programmers)27,557Apache-2.0Command line utilitiesDevelopment tools fastmurmur3Fast non-cryptographic hash, with the benchmarks to prove it.1,123,565MITCryptography fastnFTD Interpreter1,633MIT fastn-builtinsfastn: Full-stack Web Development Made Easy997BSD-3-Clause fastn-contextType-safe async context propagation for Rust applications1,141UPL-1.0AsynchronousDevelopment tools fastn-context-macrosProcedural macros for fastn-context1,332UPL-1.0Development tools::Procedural macro helpers fastn-id52fastn ID52 identity and cryptographic key management1,310UPL-1.0 fastn-jdebugfastn: Full-stack Web Development Made Easy1,846BSD-3-Clause fastn-netNetwork utilities for fastn770UPL-1.0 fastn-resolvedfastn: Full-stack Web Development Made Easy1,253BSD-3-Clause fastn-typefastn: Full-stack Web Development Made Easy1,858BSD-3-Clause fastnbtSerde deserializer for Minecraft's NBT format169,272MIT OR Apache-2.0Parser implementations fastnbt-toolstools built with fastnbt30,798MIT OR Apache-2.0 fastndA numpy alternative made in rust, for rust528MIT fastnear-neardata-fetcherThis crate provides a fetcher to retrieve data from neardata.xyz10,536MIT OR Apache-2.0 fastnear-openapi-generatorSmall shared helpers for generating checked-in OpenAPI YAML from typed FastNEAR service DTOs.54MIT OR Apache-2.0Development toolsWeb programming fastnear-primitivesThis crate provides the base set of primitives used by other fastnear crates11,430MIT OR Apache-2.0 fastnetUltra-low latency encrypted networking for real-time games. TLS 1.3 + ChaCha20-Poly1305 with ~15µs RTT.577MITCryptographyGame development fastnoise-liteFastNoise Lite is an extremely portable open source noise generation library with a large selection of noise algorithms118,105MITAlgorithmsGame development fastnoise-simdA safe wrapper around the fastnoise-simd-bindings crate.4,492MIT fastnoise2A safe Rust wrapper for FastNoise2, a node-based noise generation library optimized with SIMD.7,173MIT fastnoise2-serdeSerialisation for FastNoise251MITEncoding fastnoise2-sysRust bindings for FastNoise2.5,100MIT fastnoise_simd_bindingsBindings for the FastNoiseSIMD library, https://github.com/Auburns/FastNoise.5,380MIT fastnumFast decimal numbers library4,516,241MIT OR Apache-2.0MathematicsNo standard library fastnum2fork of Fast decimal numbers library3,354MIT OR Apache-2.0MathematicsNo standard library FastObjectNotationFast Object Notation — a fast, human-readable, line-oriented serialization format29MIT fastoboFaultless AST for Open Biomedical Ontologies.89,366MITParser implementationsScience fastobo-derive-internalInternal derive macros for the `fastobo` crate.83,066MITParser implementationsScience fastobo-graphsOBO Graphs data model, decoder and encoder in Rust.39,343MITParser implementationsScience fastobo-owlOWL language mapping for ontologies in the OBO flat file format 1.419,030MITScience fastobo-syntaxPEG Syntax and pest parser for the OBO flat file format 1.471,998MITParser implementationsScience fastobo-validatorFaultess validation tool for OBO products23,601MITScience fastokBPE in Rust with bindings to Python using PyO31,530MIT OR Apache-2.0 fastokensFast Tokenizer653,451Apache-2.0 fastokens-b10Fast Tokenizer37Apache-2.0 fastoonToy implementation of TOON format.21GPL-3.0-only FastORMORM based on sqlx1,697non-standard fastorm-macroORM based on sqlx1,998non-standard fastorm-traitORM based on sqlx2,415non-standard fastpackFastPack — modern texture atlas packer617MITCommand line utilitiesGame development fastpack-compressImage compression backends for FastPack946MITCommand line utilitiesGame development fastpack-coreCore packing algorithms and data types for FastPack1,263MITCommand line utilitiesGame development fastpack-formatsExport format writers for FastPack1,058MITCommand line utilitiesGame development fastpack-guiNative desktop GUI for FastPack (primary interface)513MITCommand line utilitiesGame development fastpack-tauriTauri GUI for FastPack253MITCommand line utilitiesGame development fastpack-tuiInteractive terminal TUI for FastPack526MITCommand line utilitiesGame development fastpaper-cliCLI tool for searching, downloading and reading academic papers52GPL-3.0Command line utilities fastparseMiscellaneous general-purpose parsing utility components, useful in dependent projects2,202BSD-3-Clause fastpastaCLI for verifying or examining readout data from the ALICE detector.42,586MIT OR Apache-2.0Command line utilities fastpasta_toml_macroDEPRECATED. Development continues at: https://crates.io/crates/descriptive_toml_derive. Convenience crate with a trait definition…2,909MIT OR Apache-2.0Development toolsRust patterns fastpasta_toml_macro_deriveDEPRECATED. Development continues at: https://crates.io/crates/descriptive_toml_derive. Procedural derive macro for serializing a…3,431MIT OR Apache-2.0Development toolsRust patterns fastpbkdf2A rust binding for fastpbkdf2. This is a PBKDF2 with HMAC-SHA1, HMAC-SHA256 and HMAC-SHA512 and is faster than other…13,498CC0-1.0 fastpeekA different way to peek iterators7,654MIT OR Apache-2.0No standard libraryNo standard library::No dynamic allocation fastpermA dead-simple, extreme fast permission flag system for Rust with no dependencies.4,195Apache-2.0Rust patterns fastpforFastPFOR lib with C++ Rust wrapper and pure Rust implementation68,177MIT OR Apache-2.0Compression fastping-rsICMP ping library for quickly sending and measuring batches of ICMP ECHO REQUEST packets.71,289MIT fastpoolThis crates implements a fast object pool for Async Rust.382,060Apache-2.0 fastprioA fast O(1), no_std priority queue using buckets2,760MIT fastpubsub-sdkRust SDK for FastPubSubNetwork realtime message transport.69MIT OR Apache-2.0AsynchronousGame development fastqA parser for fastq86,854MIT fastq-countSimple fastq read and base counter for paired data.1,898MIT fastq-fix-i5Rewrite FASTQ headers by reverse-complementing only the i5 (P5/index2) part in ...:i7+i523MITCommand line utilitiesScience fastq-generatorA fastq generator for generation of synthetic fastq files.2,288MITCommand line utilitiesScience fastq_rsMulti purpose fastq toolkit.459Apache-2.0Command line utilities fastqc-compliant-rsA Rust translation of FastQC - quality control for high-throughput sequencing data59GPL-3.0Command line utilitiesScience fastqc-rsA fast quality control tool for FASTQ files written in rust12,827MIT fastqc-rustA Rust rewrite of FastQC - a quality control tool for high throughput sequence data650GPL-3.0-onlyCommand line utilitiesScience fastqgenRandom paired fastq file generation. Nothing more, nothing less.121MIT fastqrabThe fast, reliable multitool of FASTQ processing36MITCommand line utilitiesScience::Bioinformatics fastqrab-configConfiguration data model for fastqrab: file formats, compression, and read segments107MITCommand line utilitiesScience::Bioinformatics fastqrab-dnaLow-level DNA primitives for fastqrab: sequence/quality handling, segments, and approximate matching120MITCommand line utilitiesScience::Bioinformatics fastqrab-ioFASTQ/FASTA/BAM input and output with gzip/zstd compression for fastqrab85MITCommand line utilitiesScience::Bioinformatics fastqrab-stepsPipeline building blocks for fastqrab: read transformations, filters, reports, and demultiplexing62MITCommand line utilitiesScience::Bioinformatics fastrFast copy-on-write strings with small inline string optimization.1,633MIT OR Apache-2.0Data structuresEncoding fastraceA high-performance timeline tracing library for Rust6,141,932Apache-2.0Development tools::Debugging fastrace-axumA axum instrument for propagating trace context for fastrace2,685,048Apache-2.0Development tools::Debugging fastrace-datadogDatadog reporter for fastrace13,548Apache-2.0Development tools::Debugging fastrace-futuresUtilities for tracing `futures` with fastrace1,787,256Apache-2.0Development tools::Debugging fastrace-jaegerJaeger reporter for fastrace312,569Apache-2.0Development tools::Debugging fastrace-macroAttribute procedural macro for fastrace6,148,064Apache-2.0Development tools::Debugging fastrace-opentelemetryOpentelemetry reporter for fastrace4,145,691Apache-2.0Development tools::Debugging fastrace-poemA Poem middleware for propagating trace context for fastrace3,280Apache-2.0Development tools::Debugging fastrace-reqwestA reqwest util for propagating trace context for fastrace2,934,904Apache-2.0Development tools::Debugging fastrace-tonicA tonic instrument for propagating trace context for fastrace4,319,930Apache-2.0Development tools::Debugging fastrace-towerA tower layer for propagating trace context for fastrace1,632Apache-2.0Development tools::Debugging fastrace-tracingA compatibility layer that connects tokio-tracing with fastrace tracing library.218,946Apache-2.0Development tools::Debugging fastrandA simple and fast random number generator771,543,546Apache-2.0 OR MITAlgorithms fastrand-contribExtension functionality for fastrand49,992Apache-2.0 OR MIT fastrange-rsA fast alternative to the modulo reduction ported to Rust150,852MIT fastrieSequentialised memory-packed associative tries, buildable at compile time, useful for longest prefix matching13,944MIT fastripgrepFast regex search with sparse n-gram indexing — faster than ripgrep on every pattern type77MITCommand line utilitiesText processing fastrlpFast RLP serialization library37,168,338MPL-2.0 fastrlp-deriveProcedural macros for fastrlp696,866MPL-2.0 fastrmA fast version of the rm command1,100MIT fastrpA high-performance safe implementation of the Fast Random Projection (FastRP) algorithm.26MIT OR Apache-2.0AlgorithmsData structures fastrq8-bit and 4-bit rotational quantization (RaBitQ-style) for vector compression, following Weaviate's implementation.1,216Apache-2.0AlgorithmsScience fastrsstrings faster than stdlib1,313MIT fastrs-coreA FastAPI-equivalent for Rust: automatic request validation, compile-time OpenAPI docs, and minimal boilerplate on top of Axum,…16MIT OR Apache-2.0Web programmingWeb programming::HTTP server fastrs-macrosProc macros powering fastrs: route attribute macros and compile-time OpenAPI schema derivation for Axum.16MIT OR Apache-2.0Development tools::Procedural macro helpersWeb programming fastrustA lightweight API framework built on top of Axum, inspired by FastAPI107MITWeb programming fastsarSwitch between AWS roles quickly using fuzzy matching8,067MITAuthenticationCommand line utilities fastscanfasta scanner for PacBio and ONT74MIT fastscoopA fast, drop-in replacement for `scoop search`.71MITCommand line utilities fastsend快速生成适用于分布式环境的 ID 和序列号7,884MIT OR Apache-2.0 fastseqfastseq is a Rust crate for parsing FASTA/Q sequences31non-standardParsing toolsScience fastserialUltra-fast, zero-copy serialization/deserialization library for Rust with SIMD acceleration56MIT OR Apache-2.0EncodingNo standard library fastserial-deriveProcedural macros for fastserial - the ultra-fast serialization library118MIT OR Apache-2.0Development toolsEncoding fastserial-lite3placeholder289MIT fastserveA simple and quick way of creating a backend to serve static files / api endpoints17,168MIT fastsetFast set implementation for dense, bounded integer collections, optimized for quick updates and access.12,880MITData structures fastshareUltra-fast file sharing between devices on the same network480MITCommand line utilities fastsim-coreCore FASTSim models for vehicle energy usage simulation24,088Apache-2.0 fastsim-proc-macrosProcedural macros for FASTSim22,871Apache-2.0 fastsinkCreate a Sink from some value and a closure returning a Future.2,976Apache-2.0 OR MITAsynchronous fastskill-coreFastSkill core library - AI Skills management toolkit50Apache-2.0Command line utilities fastskipLock-free arena-backed skip list memtable for LSM-tree storage engines39MITConcurrencyData structures fastslFast, lightweight read-only viewer for SwanLab local logs (swanboard-API compatible)68Apache-2.0Command line utilitiesVisualization fastsnbtSerde deserializer for Minecraft's stringified NBT format6,245MIT OR Apache-2.0Parser implementations faststdMoved to `fstd`(https://crates.io/crates/fstd).5,172MIT OR Apache-2.0 faststepUIKit-inspired embedded UI framework built on embedded-graphics23Apache-2.0Embedded developmentGUI faststrFaststr is a string library that reduces the cost of clone.13,791,914MIT OR Apache-2.0 faststr-forkFaststr is a string library that reduces the cost of clone.7,274MIT OR Apache-2.0 fastsyncA fast, safe one-way directory synchronization tool for local folders and network transfers.223MITCommand line utilities fasttextfastText pure Rust implementation2,046,561MITScienceText processing fasttext-pure-rsPure-Rust fastText inference engine for language identification and text classification11,899MITScienceText processing fasttext-servingfastText model serving API server47,719MIT fasttextembedFast, dependency-free text embeddings (BAAI/bge-small-en-v1.5) in pure C56MITScienceText processing fasttimeSmall UTC date/time library based on Ben Joffe's fast 64-bit date algorithm932Apache-2.0Date and time fastudpfast udp based on recvmmsg and sendmmsg11,321ISC fastui-cosmicPure Rust multi-line text handling22MIT OR Apache-2.0 fastui-unevalSerde serializer to embed data as Rust code27MITDevelopment tools::Build Utils fastuuidFast and lightweight generation of 192-bit uuids with support for 128-bit strings10,084Apache-2.0 OR MIT fastvarintfast varint encode/decode that supports wide compatibility21,950MIT fastvecA high-performance SBO vector crate.238MIT OR Apache-2.0 fastvlqA fast variant of Variable-Length Quantity with a focus on speed and no_std support.43,508Apache-2.0 OR MITAlgorithmsCompression fastwarcThe world's fastest WARC parsing library written in Rust with bindings for Python.201Apache-2.0 fastwca fast wc rewrite88GPL-3.0-or-later fastwebsocketsA fast RFC6455 WebSocket server implementation3,880,865Apache-2.0 fastwebsockets-monoioA fast RFC6455 WebSocket server implementation3,235Apache-2.0