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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.

fission-testHeadless and runtime testing helpers for Fission applications235MIT fission-test-driverLive app testing client and protocol helpers for Fission shells647MIT fission-text-engineText shaping, editing, and measurement primitives for Fission1,520MIT fission-themeDesign tokens, Design System Package codegen output, and component themes for Fission1,627MIT fission-velloA GPU compute-centric 2D renderer.233Apache-2.0 OR MITGraphicsRendering fission-vello-encodingVello types that represent the data that needs to be rendered.251Apache-2.0 OR MITGraphicsRendering fission-vello-shadersVello infrastructure to preprocess and cross-compile shaders at compile time.243Apache-2.0 OR MITGraphicsRendering fission-widgetsPortable widget catalog for Fission applications1,213MIT fission-winitFission's patched fork of the cross-platform winit window creation library.813Apache-2.0GUI fission-yields-dataFission Yield Data for some nuclides315GPL-3.0Science fistFist: Interactive Search Tool49non-standard fist-typesShared types for the Fist search tool22non-standard fistbumpA tiny command line utility for managing your project's version numbers3,352MIT fistinc-authPaging types for Fist Inc bank1,675non-standard fistinc-diesel-utilsAsync pool and diesel types for Fist Inc bank3,646non-standard fistinc-errorsError types for Fist Inc bank3,038non-standard fistinc-pagingPaging types for Fist Inc bank2,373non-standard fitA small crate used for reading and decoding FIT files generated by sports devices.14,897MIT fit-connect-rsfit syncing tool1,996MIT fit-rustfit-rust is a Rust library designed for reading, writing, and merging FIT protocol files.11,783MIT fit-sdkA small crate used for reading and decoding FIT files generated by sports devices.1,893MIT fit-sdk-rustPure-Rust implementation of the Garmin FIT (Flexible and Interoperable Data Transfer) protocol.50Apache-2.0EncodingParser implementations fit-stats-weightA minimalist lib to caclulate BIM41MIT fit2gpx.fit to .gpx converter7,280MITCommand-line interfaceScience::Geospatial fit_fileReads FIT (Flexible and Interoperable Data Transfer) files21,426MIT fit_no_ioA small crate used for reading and decoding FIT files generated by sports devices that works without a file system.2,103MIT fit_textFit text inside a rectangle9,699MITGUIRendering fitbit-rsA Rust client for the Fitbit API722MIT OR Apache-2.0API bindingsWeb programming fitctlCLI for host survey, contract derivation, and workload-fit validation107Apache-2.0Command line utilities fitctl-coreCore library for surveying hosts, deriving contracts, and validating workload fit160Apache-2.0Development tools fitgirl-ddl-libextract DDL from fitgirl-repacks.site1,132MIT fitgirl-decryptdecrypt torrents from fitgirl-repacks6,977MIT fitimageA Rust library for creating U-Boot compatible FIT images68,238MIT OR Apache-2.0Development toolsEmbedded development fitimerA timer to keep fit and healthy whilst having a sedentary work.4,987GPL-3.0-only fitmeCLI curve fitting tool. Parameterise an equation from a CSV dataset.6,473MITCommand line utilitiesMathematics fitness_coderA fitness freak's toy.2,712MIT fitness_planthis is a demo1,201MIT fitnesstoolsCollection of tools related to fitness and weightlifting2,474MIT OR Apache-2.0 fitnesstraxFitness tracking on your own computer1,703BSD-3-Clause fitnesstrax-libLibrary for managing fitness time series data2,670BSD-3-ClauseData structures fitoFile System Tool Box2,832LGPL-3.0-only fitparseRust library for parsing files in Garmin FIT format1,740MIT fitparserA utility to parse ANT .FIT files and allow their contents to be serialized with serde.60,353MITEncodingParser implementations fitrsParse FITS file in pure rust42,476GPL-3.0ConcurrencyParsing tools fitshandling of FITS data.952GPL-2.0-or-later fits-headerPure-Rust, MSVC-safe FITS header reader/writer: parse every card from a FITS file, CRUD single or multiple header keywords, then…3,801MPL-2.0EncodingParser implementations fits-ioA pure-Rust FITS file handling library inspired by CFITSIO, focused on safety, clarity, and performance.186Apache-2.0 OR MIT fits-rsFITS encoder and decoder in Rust5,790MIT fits-wellA blazing-fast reader and writer for FITS (Flexible Image Transport System) files, targeting the full FITS 4.0 standard.114MIT OR Apache-2.0Parser implementationsScience fitscube-rsCombine single-frequency/single-time FITS images into a FITS cube (Rust port of fitscube)82BSD-3-Clause fitsdkA small crate which provides a simple API exposing the FIT SDK.4,510MIT fitsioRust implmentation of astronomy fits file handling124,260MIT/Apache-2.0External FFI bindingsScience fitsio-deriveCustom derive macros for the fitsio crate5,654MIT/Apache-2.0External FFI bindingsScience fitsio-purePure Rust FITS file reader and writer1,400Apache-2.0 fitsio-pure-tslPure Rust FITS file reader and writer patched for tsl37Apache-2.0 fitsio-sysFFI wrapper around cfitsio87,675MIT/Apache-2.0External FFI bindingsScience fitsio-sys-bindgenFFI wrapper around cfitsio8,176MIT/Apache-2.0External FFI bindingsScience fitskitPure Rust FITS v4.0 reader/writer with tile-compression read and write101MITEncodingParser implementations fitsort-rsA rust rewrite of fitsort, used to read dfits output23MIT fitsrotate_rsRotate FITS images10,367MIT fitsrsImplementation of the FITS image parser38,991Apache-2.0 OR MITAlgorithmsScience fitstatA library to control fitstat devices4,889MIT fitsyFast FITS file I/O, WCS transforms, and a CLI (info / header / funpack)95MIT OR Apache-2.0Command line utilitiesParser implementations fittingPure Rust curve fitting library26,413MITScience fittsSpaced repetition scheduler using Fitts' Law for difficulty prediction and SM-2 for interval scheduling.1,455MIT OR Apache-2.0 FiTuiTerminal-based personal expense tracker63MIT fitxFitx (File System Toolbox) is a library and a command program that features a toolbox with a series of file system…2,800LGPL-3.0-only fitzOn hold for upcoming numerical analysis project.1,364MIT fitz_exampleA fun game where you guess what number the computer has chosen.2,453MIT OR Apache-2.0 fiudp-cliUnidirectional UDP sender for TRMNL e-paper displays — FEC + ChaCha20-Poly1305 AEAD36GPL-3.0-onlyCommand line utilitiesCryptography fiuxThe fastest multi-format file converter CLI tool83MITCommand line utilitiesFilesystem fivA fast, lightweight image viewer29MITCommand line utilitiesMultimedia::Images fiveA rust crate to support DCI natively in rust1,289MIT five32RISC-V emulator1,536MIT five32-instruction-setDefinitions for an implementation of the RISC-V instruction set.2,117MIT five8Fast base58 encoding and decoding for 32-byte and 64-byte arrays.7,228,325MITEncoding five8_constCompile-time base58 decoding.9,464,577MITEncoding five8_coreCore utilities for the five8 crates.9,882,778MITEncoding five8_foofoo1,369MIT five8_foo_corefoo1,638MIT fiveddTODO1,495BUSL-1.1 fivedd-clientTODO1,494Apache-2.0 fivedd-guiTODO1,516BUSL-1.1 fivedd-serverTODO1,502BUSL-1.1 fiveoAn approximate string matching library built with the web in mind8,926ISC fixFixed-point number types9,277ISCData structuresNo standard library fix-affixBuild a Hunspell dictionary via TOML58MITCommand line utilities fix-codec-rsHigh-performance FIX protocol encoder/decoder for low-latency trading systems612MITEncodingFinance fix-engineLanguage-agnostic fix engine for applying pattern-based and LLM-assisted code migration fixes96Apache-2.0 fix-engine-cliGeneric fix engine CLI for applying pattern-based and LLM-assisted code migration fixes20Apache-2.0 fix-engine-coreCore types for the fix engine: text edits, fix plans, strategies131Apache-2.0 fix-engine-js-fixJS/TS/JSX/TSX language-specific fix operations for the fix engine57Apache-2.0 fix-getters-callsFix getters call sites by removing the get prefix when applicable4,142MIT/Apache-2.0Command line utilitiesDevelopment tools fix-getters-defFix getters definition by removing the get prefix when applicable5,329MIT/Apache-2.0Command line utilitiesDevelopment tools fix-getters-rulesFix get functions name by removing the get prefix when applicable91,307MIT/Apache-2.0Development tools fix-getters-utilsUtils for fix-getters6,457MIT/Apache-2.0Command line utilitiesDevelopment tools fix-hidden-lifetime-bugProc-macro to write an automatic fix for the "hidden lifetime in impl Trait" issue9,318,900Zlib OR MIT OR Apache-2.0 fix-hidden-lifetime-bug-proc_macrosProc-macro to write an automatic fix for the "hidden lifetime in impl Trait" issue7,847,958Zlib OR MIT OR Apache-2.0 fix-name-caseCLI tool to convert variable and function names to snake_case4,929GPL-3.0-or-later fix-protoYet another fix protocol wrapper.1,547MIT fix-ratA rational number type with fixed denominator3,435Apache-2.0MathematicsNo standard library fix-rsFIX (Financial Information Exchange) engine written in Rust.5,821MIT/Apache-2.0Network programming fix-rs-macrosDerive macros used by fix-rs.5,602MIT/Apache-2.0 fix-whitespaceDetect and correct whitespace issues in text files5,721Apache-2.0 fix32Easy implementation of fixed point numbers in Rust, using i32 as base. Decimal places should be configured at compile time, to be…1,740GPL-3.0-only fix44-forge-helpersZero-allocation, high-performance helper functions for FIX 4.4 protocol parsing and serialization1,646MIT OR Apache-2.0EncodingNetwork programming fix_checksumCrate contains methods to validate/generate FIX-protocol message checksum7,903MIT fix_floatFixed floating types that allows useful trait implementations and datastructures on float numbers6,906MITData structuresEncoding fix_fnMacro to create recursive closures (similar to the Y combinator).11,917MIT fix_meA very simple macro that lets you write temporary code that WILL NOT build in release mode.6,475MIT fixcolA library for reading and writing fixed width / column delimited data files.3,486MITEncodingParsing tools fixcol-deriveProc Macro extensions for deriving fixcol traits3,752MIT fixdecHigh-performance fixed-point decimal types for financial calculations and cryptocurrency10,746MIT OR Apache-2.0Data structuresMathematics fixedFixed-point numbers.12,878,074MIT/Apache-2.0AlgorithmsEmbedded development fixed-arrayFixed-size array12,791Apache-2.0 fixed-bigintFixed-size big integer implementation for Rust26,944Apache-2.0AlgorithmsData structures fixed-bitsetA bitset whose size is fixed at compile-time2,480MITData structures fixed-blazeZero-cost fixed-point arithmetic with convergent rounding and SIMD-first design.20AGPL-3.0-onlyHardware supportMathematics fixed-bufferFixed-size buffers for network protocol parsers300,062Apache-2.0Network programmingParsing tools fixed-buffer-tokioNOT MAINTAINED. This crate was replaced by the `fixed-buffer` crate with `tokio` feature.8,999Apache-2.0 fixed-bumpA bump allocator that uses fixed-size chunks to ensure non-amortized O(1) allocations15,263GPL-3.0-or-laterMemory managementNo standard library fixed-bytereprBig-endian and little-endian fixed byte conversion traits.2,641GPL-3.0 WITH Classpath-exception-2.0EncodingParsing tools fixed-cacheA minimalistic, lock-free, fixed-size cache948,866MIT OR Apache-2.0CachingConcurrency fixed-capacity-vecVariable-length buffer backed by a fixed-size heap array2,552,211MIT OR Apache-2.0Data structures fixed-codec-deriveMuta fixed codec derive procedural macros.1,708MIT fixed-collectionsDynamically allocated ungrowable collections.1,384MIT OR Apache-2.0Data structuresDevelopment tools::FFI fixed-dspA Rust library for fixed-point digital signal processing (DSP) algorithms.24MIT OR Apache-2.0AlgorithmsEmbedded development fixed-expExponentiation for fixed-point numbers1,738MIT OR Apache-2.0 fixed-exp2Exponentiation for fixed-point numbers (forked, see README)1,502MIT OR Apache-2.0 fixed-fftFixed-point Fast Fourier Transform1,759MITEmbedded developmentMathematics fixed-filtersfixed-point digital filters1,570Apache-2.0No standard library fixed-hashMacros to define custom fixed-size hash types49,456,797MIT OR Apache-2.0 fixed-index-vecA vector-like data structure whose indices do not change when elements are removed.1,491non-standard fixed-jsonNo-std, no-allocation JSON parsing into caller-owned fixed storage155BSD-2-ClauseEmbedded developmentNo standard library fixed-length-searchThe fastest algorithm for finding a path with a specific length in a graph1,502MIT fixed-macroMacros for creating fixed-point constants for types in the `fixed` crate.363,789MIT OR Apache-2.0AlgorithmsData structures fixed-macro-implProc-macro implementation for the `fixed-macro` crate.362,489MIT OR Apache-2.0 fixed-macro-typesMacro aliases used in the `fixed-macro` crate.359,854MIT OR Apache-2.0 fixed-mapA fixed map where storage layout is calculated by a procedural macro.1,128,877MIT OR Apache-2.0Data structures fixed-map-deriveA fixed map where storage layout is calculated by a procedural macro. This crate contains the procedural macros.1,129,616MIT OR Apache-2.0Data structures fixed-math-taylorHigh-performance fixed-point trigonometry library optimized for microcontrollers without FPU. 100% no_std.138GPL-2.0-or-laterMathematicsNo standard library fixed-numA high-precision, high-performance fixed-point decimal type.3,282MIT OR Apache-2.0 fixed-num-helperA helper crate for the 'fixed-num' crate.3,816MIT OR Apache-2.0 fixed-num-macroA helper crate for the 'fixed-num' crate.3,414MIT OR Apache-2.0 fixed-num-validatorA helper crate for the 'fixed-num' crate.1,671MIT OR Apache-2.0 fixed-pointFixed point numbers6,114MIT OR Apache-2.0 fixed-point-macrosMacros for fixed-point package4,372MIT OR Apache-2.0 fixed-point-mathFixed point math support7,558MIT fixed-polynomialPolynomial arithmetic functions with compile-time degree checks1,520MIT fixed-queueno_std, no_alloc, use [T; N]. support `Vec`/`VecDeque`/`History`44,011non-standardData structuresEmbedded development fixed-resampleAn easy to use crate for resampling at a fixed ratio55,901MITMultimediaMultimedia::Audio fixed-sizeAttribute macro to replace variable length types with fixed length types in struct definitions. Useful for overriding String when…1,510MIT/Apache-2.0 fixed-size-allocatorA fixed-size allocator2,307non-standard fixed-size-bufFixed size async buffer pool4,119MIT fixed-size-vectorFixed size vector based on arrays7,840MIT fixed-slice-dequeA fixed size deque implementation48,857MITData structures fixed-slice-vec`FixedSliceVec` is a dynamic length Vec with runtime-determined maximum capacity backed by a slice.89,798Apache-2.0Data structuresEmbedded development fixed-sqrtSquare root for fixed-point numbers77,097Apache-2.0 fixed-trigTrigonometric functions for fixed-point numbers.1,703BSD-3-Clause fixed-type-idMake your types have a fixed type id&stable type name with version support between different builds.5,232MIT fixed-type-id-macrosMake your types have a fixed type id&stable type name with version support between different builds.3,993MIT fixed-typed-arenaA typed arena that uses fixed-size chunks to ensure non-amortized O(1) allocations14,444GPL-3.0-or-laterMemory managementNo standard library fixed-unsignedFixed precision decimal numbers for Nimiq's Rust implementation14,983Apache-2.0 fixed-vec-dequeA fixed-size, zero-allocation circular buffer for Rust.57,829MIT/Apache-2.0Data structures fixed-vectorsLightweight library implementing fixed-length vectors for Rust applications not compiled with the standard library.41,559MITData structuresGame development fixed2csvConvert files with fixed-width columns to CSV1,537MIT/Apache-2.0 fixed2floatFixed point to floating point conversion utility15,957MIT fixed32Fixed Point types34,872MIT fixed32-mathGeometric types19,542MIT fixed_analyticsFixed-point mathematical functions. Accurate, deterministic, and panic free.892MITAlgorithmsEmbedded development fixed_bitmapsA small crate implementing bitmap functionality around primitive Rust unsigned integers.23,441MIT OR Apache-2.0Data structures fixed_circular_bufferA queue (the abstract data structure) implemented using a fixed size circular buffer7,294LGPL-3.0 fixed_decimalAn API for representing numbers in a human-readable form9,512,959Unicode-3.0Embedded developmentInternationalization (i18n) fixed_dequeA fixed size VecDeque to match Python Deque12,634MITData structures fixed_free_listA fixed-size free-list with optional key lifetime safety and macroless unique typing.2,938MIT OR Apache-2.0CachingData structures fixed_heapA fixed-size heap structure with manually provided stateful comparison function.30,590MIT OR Apache-2.0CachingData structures fixed_len_strA procedural macro for create a smart pointer to str backed by a fixed size array,with the size given by the tokens.34,551UnlicenseNo standard libraryRust patterns fixed_len_str_exampleThis a helper crate for document the expansion of a procedural macro one,don't use.20,774Unlicense fixed_mathSome math traits and functions for `fixed` point numbers.10,798MIT OR Apache-2.0AlgorithmsMathematics fixed_point_accelerationFixed-point iteration with acceleration algorithms (Anderson, Aitken, MPE, RRE, SEA, VEA)23MITAlgorithmsMathematics fixed_poolFixed-size object pool with ownership and return semantics.1,475MIT OR Apache-2.0 fixed_ring_bufferAn asynchronous SPSC fixed-capacity look-free ring buffer, which can be used to transfer data between two threads or between two…189,591MIT fixed_star_framePatched version of the fixed crate pending https://gitlab.com/tspiteri/fixed/-/merge_requests/1410,740MIT/Apache-2.0AlgorithmsEmbedded development fixed_strFixed-size, null-padded UTF-8 string type with const-safe construction and binary serialization support.2,525MIT OR Apache-2.0Data structuresEncoding fixed_trigonometryFixed point numerical approimations to trigonometric functions.29,900non-standard fixed_typemapA typemap which can allocate types inline with zero overhead and allow for iteration by traits1,626Unlicense fixed_typemap_internalsInternals for the fixed_typemap crate2,387Unlicense fixed_typemap_macrosInternals for the fixed_typemap crate3,089Unlicense fixed_vecGhosts of Departed Proofs for checking valid indices of Vec's once1,267MIT OR Apache-2.0 fixed_widthA fixed width data parser.56,800MIT fixed_width_deriveDerive trait for use with the fixed_width crate.25,296MIT fixedbitsetFixedBitSet is a simple bitset collection428,641,317MIT OR Apache-2.0Data structures fixedbitset-stackA forked version of FixedBitSet that supports const generics8,145MIT OR Apache-2.0Data structures fixedbitset-utilsA bunch of utility stuffs that I use when working with bitsets in Rust.3,280MITAlgorithms fixedbufFixed-size buffer for networking protocols.1,365MIT fixedhashFixed-size hashes1,855MIT fixedlength-format-parserBuild parsers for files with fixed length, record-like fields.3,332MIT fixedmodFast modular arithmetic with a fixed modulus35MIT OR Apache-2.0AlgorithmsNo standard library fixedpointA simple library to compute fixed points of a function5,450MIT fixedpointmathMath library to simulate FixedPoint computation in Solidity smart contracts.10,985Apache-2.0