All 305,250 crates, alphabetically

fcplug-calleeForeign Clang Plugin solution3,844MIT fcplug-macrosForeign Clang Plugin solution8,509MIT fcplug-rclibForeign Clang Plugin solution3,918MIT fcpv2Implementation of FCPv2 freenet protocol2,942GPL-2.0 fcpyFast command-line file concatenator with smart filtering, recursive scanning, and clipboard integration.544MITCommand line utilities fcrcFast-CRC is a generic CRC implementation using SIMD instructions when available and a fallback when not.1,235MIT OR Apache-2.0AlgorithmsNo standard library fcrlfConverter for file's CRLF line delimiter.1,631MIT OR Apache-2.0Command line utilities fcryptCross-platform CLI for password-based file encryption and decryption30MITCommand line utilitiesCryptography fcsA low-level Flow Cytometry Standard (FCS) file serializer/deserializer1,796MIT OR Apache-2.0EncodingParser implementations fcs_rsBasic tool for manipulating and analyzing Flow Cytometry Standard (FCS) files.1,456MIT fcsdFront-coding string dictionary.7,428MITData structures fctunused crate4,337MIT fct-vanitygenGenerates vanity addresses for the Factom protocol1,840MITCommand line utilities fctoolShell Scripting Language24,811MIT fctoolsAn exhaustive, highly modular and extensible host SDK for the Firecracker microVM manager.25,541MITVirtualization fcwtFast Continuous Wavelet Transforms4,544Apache-2.0 fcwt2Rust implementation of the fast Continuous Wavelet Transform117Apache-2.0 fdFile descriptor utilities74,732LGPL-3.0 fd-coreFD (Fast Draft) — core data model, parser, emitter, and layout solver445MITGraphicsParser implementations fd-findfd is a simple, fast and user-friendly alternative to find.729,227MIT OR Apache-2.0Command line utilities fd-find-enhancefd is a simple, fast and user-friendly alternative to find.4,850MIT OR Apache-2.0Command line utilities fd-lockAdvisory cross-platform lock on a file using a file descriptor to it.54,680,391MIT OR Apache-2.0FilesystemOperating systems fd-lock-rsLike [fd-lock](https://crates.io/crates/fd-lock) but with a slightly different API.81,568MIT fd-lspFD (Fast Draft) Language Server — diagnostics, completions, hover, symbols308MITGraphicsParser implementations fd-oxigenFast Downward planner parameters optimization using oxigen.1,798GPL-3.0-or-laterAlgorithmsScience fd-passingA crate to pass file descriptors between processes.6,970MIT fd-queueA library to support fd passing on Unix sockets.14,077MIT OR Apache-2.0AsynchronousOperating systems::Unix APIs fd-reactorAn async reactor for handling file descriptors80,139MIT OR Apache-2.0AsynchronousOperating systems::Unix APIs fd_bs58Optimized Base58 codec for 32 and 64 byte numbers.29,285Apache-2.0 fdaA CLI tool for interacting with Feldera58,040MIT OR Apache-2.0 fdaf-aecAn Acoustic Echo Canceller (AEC) using the Frequency Domain Adaptive Filter (FDAF) algorithm.3,727MITAlgorithmsMultimedia::Audio fdapFeatherweight FDAP client library2,242ISC fdars-coreFunctional Data Analysis algorithms in Rust9,175MITMathematicsScience fdateNatural date input parsing78MPL-2.0Date and timeText processing fdbFoundationDB Client API for Tokio10,550MIT OR Apache-2.0API bindingsDatabase interfaces fdb-genBinding generation helper for FoundationDB9,406MIT OR Apache-2.0Database interfacesExternal FFI bindings fdb-rlStandin crate for fdb-rl1,654Apache-2.0 fdb-sysBinding to the C APIs for FoundationDB9,335MIT OR Apache-2.0Database interfacesExternal FFI bindings fdb_deriveA simple derive macro to manage structs persistence in FoundationDB with secondary indexes automatic management4,880Apache-2.0Database interfaces fdb_traitA simple derive macro to manage structs persistence in FoundationDB with secondary indexes automatic management3,163Apache-2.0Database interfaces fdb_tupleA crate to convert between FoundationDB Tuple Layer tuples and Rust tuples6,388Unlicense fdc1004Driver for the FDC1004 by Texas Instruments2,301MIT fdcanSTM32 FDCAN peripheral driver87,942MIT/Apache-2.0Embedded developmentNo standard library fdcanusbProtocol implementation for the FDCANUSB by MJBOTS32,251Apache-2.0 fddfFast, parallelized duplicate file finder.18,691MIT/Apache-2.0 fdeStandalone Rust implementation flow for FDE421MIT fdecA collection of macros for generating fixed-size fixed-point numeric types for Rust.7,860MITAlgorithmsData structures fdecimalArbitrary precision fast decimal numbers2,008MITMathematicsNo standard library fdedupCross platform md5 based file deduplication tool2,494MITCommand line utilities fdeflateFast specialized deflate implementation127,730,196MIT OR Apache-2.0Compression fdevFreenet development tool16,346non-standard fdfA fast, multi-threaded filesystem search tool with regex/glob support and extremely pretty colours!10,963MITCommand line utilitiesConcurrency fdg-imgA simple SVG renderer for fdg12,972GPL-3.0Visualization fdg-macroquadThe macroquad based visualizer for fdg10,145GPL-3.0Visualization fdg-simA flexible force-directed graph framework34,340MITVisualization fdhFull Domain Hash (FDH) for extending the size of a hash digest to an arbitrary length54,730MIT OR Apache-2.0CryptographyNo standard library fdinterceptIntercepts and logs stdin, stdout, and stderr for any target command.1,172MITCommand line utilitiesDevelopment tools fdirfile system14,560Unlicense fdiskRust wrappers for libfdisk6,452MIT fdisk-sysRust bindings for libfdisk16,641MIT fdkExperimental Function Development Kit for the Fn Project serverless platform5,797Apache-2.0Development toolsWeb programming fdk-aacAAC encoding library binding to libfdk-aac710,248MIT fdk-aac-rustThird-party Rust port of the Fraunhofer FDK AAC Codec Library for Android58non-standardEncodingMultimedia::Audio fdk-aac-rust-sysReference FFI layer for the third-party Rust port of Fraunhofer FDK AAC75non-standardExternal FFI bindingsMultimedia::Audio fdk-aac-sysFFI bindings for libfdk-aac731,727MIT fdkeyFDKEY verification primitives for MCP servers and HTTP backends — gate AI-agent access behind LLM-only puzzles.56MITAPI bindingsAuthentication fdlFast deterministic language1,697GPL-3.0 fdlibm-rsrust wrapper of FDLIBM, a C math library for machines that support IEEE-754 floating-point arithmetic.1,574MIT fdlimitUtility crate for raising file descriptors limit for OSX and Linux15,043,289Apache-2.0 fdm-toolkitfdm-toolkit is a crate for reading and writing 4D Miner (0.2.1.4 Alpha) game-data.669MITConfigurationData structures fdnA tool for uniformly change file or directory names and support rollback these operations23,306MIT OR Apache-2.0 fdns-gamenetworkingsockets-sysbindgen for gamenetworkingsockets lib5,259MIT OR Apache-2.0 fdo-client-linuxappEmpty crate1,681BSD-3-Clause fdo-data-formatsEmpty crate1,735BSD-3-Clause fdo-http-wrapperEmpty crate1,678BSD-3-Clause fdo-manufacturing-clientEmpty crate1,687BSD-3-Clause fdo-manufacturing-serverEmpty crate1,708BSD-3-Clause fdo-owner-onboarding-serverEmpty crate1,670MIT fdo-owner-onboarding-serviceEmpty crate1,704BSD-3-Clause fdo-owner-toolEmpty crate1,673BSD-3-Clause fdo-rendezvous-serverEmpty crate1,680BSD-3-Clause fdo-storeEmpty crate1,677BSD-3-Clause fdo-utilEmpty crate1,644MIT fdpSafe bindings for libFDP (Fast Debugging Protocol)16,256GPL-3.0-onlyAPI bindings fdp-sysRust FFI bindings for libFDP12,860GPL-3.0-onlyExternal FFI bindings fdpassFile descriptor passing through UNIX socket5,458LGPL-3.0 fdringbufRingbuffer with FD signalling - fast IPC without memory copies!4,921Apache-2.0/MIT fdrsA simple fd implementation in rust.1,854Unlicense fdsA tool to manage fund.11,887MIT fdsmA pure-Rust implementation of multi-channel signed distance field generation355,829MITGraphics fdsm-skrifaImport glyphs from Skrifa for fdsm606MITGraphics fdsm-ttf-parserImport glyphs from ttf-parser for fdsm259,791MITGraphics fdstreamimplementations of ::std::io::Read and ::std::io::Write for posix file descriptors15,740MIT fdsumCalculate checksums on directories2,189GPL-3.0-or-laterCommand line utilitiesFilesystem fdtA pure-Rust `#![no_std]` crate for parsing Flattened Devicetrees1,094,387MPL-2.0Embedded developmentNo standard library fdt-editA high-level library for creating, editing, and encoding Flattened Device Tree (FDT) structures72,078MIT OR Apache-2.0Embedded developmentHardware support fdt-parserA crate for parsing FDT135,644MPL-2.0Embedded developmentNo standard library fdt-rawA low-level, no-std compatible library for parsing Flattened Device Tree (FDT) binary files77,862MIT OR Apache-2.0Embedded developmentHardware support fdt-rsA flattened device tree parser for embedded no-std environments110,158MITEmbedded developmentMemory management fdtd(Future) finite difference time domain simulator for electromagnetic fields1,723MIT fdtdumpA implementation of fdtdump in Rust using the fdt-rs library1,776MITEmbedded developmentOperating systems fdupfind duplicate files recursively and in parallel9,016MIT fdupesa tool to help find and delete duplicate files783MIT fdupsUtility for finding and removing duplicate files, fast.3,754MIT OR Apache-2.0Command line utilitiesDevelopment tools feFe is a sophisticated, yet simple to use file listing utility. Use Fe to list files in a directory or to recursively find files…8,812Apache-2.0 fe-cliEmerging smart contract language for the Ethereum blockchain1,813MIT fe-cli-vgdA tool to search files1,350MITCommand line utilities fe-compilerEmerging smart contract language for the Ethereum blockchain1,825MIT fe-image-widgetfltk egui image widget support.3,029MIT OR Apache-2.0 fe-langEmerging smart contract language for the Ethereum blockchain1,831MIT fe-parserEmerging smart contract language for the Ethereum blockchain1,786MIT fe-semanticsEmerging smart contract language for the Ethereum blockchain1,753MIT fe2o3A chemistry library for Rust.1,505MIT fe2o3-amqpAn implementation of AMQP1.0 protocol based on serde and tokio1,845,367MIT/Apache-2.0 fe2o3-amqp-cbsAn experimental impl of AMQP 1.0 CBS extension1,178,749MIT/Apache-2.0 fe2o3-amqp-extExtension types to fe2o3-amqp635,672MIT/Apache-2.0 fe2o3-amqp-managementAn experimental impl of AMQP 1.0 management extension1,194,527MIT/Apache-2.0 fe2o3-amqp-typesImplementation of AMQP1.0 data types1,746,262MIT/Apache-2.0 fe2o3-amqp-wsWebSocket binding stream for AMQP1.0581,131MIT/Apache-2.0 fe2o3-crustRust TUI library with pane management, ANSI colors, scrolling, and input handling. Feature clone of rcurses.73UnlicenseCommand-line interface fe2o3-glowTerminal image display via kitty/sixel/w3m/braille protocols. Feature clone of termpix.19UnlicenseCommand-line interfaceMultimedia::Images fe2o3-highlightLightweight syntax highlighter for the Fe2O3 terminal suite — source code (18 languages), email mode, HyperList, Markdown, LaTeX,…21UnlicenseCommand-line interfaceText processing fe2o3-orbitMoon phases, ephemeris, sun/planet positions. Shared by Fe₂O₃ apps (nova, tock). Ported from ruby-ephemeris.18UnlicenseCommand line utilitiesScience fe2o3-plotTerminal charts with Unicode and ANSI colors. Sparklines, line, candlestick, and bar charts.18UnlicenseCommand-line interfaceVisualization fe2o3_mlMachine learning tools for a chemistry library for Rust.1,485MIT fe2o3_parsersParsers for a chemistry library for Rust.1,507MIT fe3o4A Registry System for Game Development.8,513MIT fe_dataData structures for FE1,151MIT fe_osiOSI to help with writing code for fe_rtos4,011LGPL-3.0Embedded developmentNo standard library fe_rtosA simple OS for Arm Cortex-M CPUs3,080LGPL-3.0Embedded developmentNo standard library fe_sessionProvides local session storage for Iron.7,793AML/Apache-2.0 fea-rsTools for working with Adobe OpenType Feature files.53,142MIT/Apache-2.0Parsing toolsText processing fea-rs-astfontTools-like AST wrapper around fea-rs parser817Apache-2.0 OR MITParser implementationsText processing FEA_codeFEA_code3,202MIT OR Apache-2.0 feachThis tool can foreach dirs and run command.1,514MIT feadersHeader file searcher using libhif written in Rust2,720GPL-3.0 feagiFramework for Evolutionary Artificial General Intelligence - Bio-Inspired Neural Computation383Apache-2.0ScienceSimulation feagi-agentClient library for building FEAGI agents in Rust2,634Apache-2.0 feagi-apiFEAGI REST API layer with HTTP and ZMQ transport adapters1,080Apache-2.0 feagi-brain-developmentBrain Development Utilities - Synaptogenesis and Connectivity1,973Apache-2.0 feagi-configConfiguration loader for FEAGI - Cross-platform TOML-based configuration with override support1,316Apache-2.0Configuration feagi-evolutionaryEvolution and Genome Management - Genotype operations for FEAGI2,364Apache-2.0 feagi-halHardware Abstraction Layer (HAL) for FEAGI embedded systems - platform abstraction and implementations369Apache-2.0 feagi-ioFEAGI I/O System2,751Apache-2.0 feagi-npu-burst-engineHigh-performance burst engine for FEAGI neural processing2,243Apache-2.0 feagi-npu-neuralPlatform-agnostic neural computation: types, algorithms, and neuron models2,958Apache-2.0 feagi-npu-plasticityFEAGI plasticity algorithms - STDP and memory formation1,925Apache-2.0 feagi-npu-runtimeRuntime abstraction traits and implementations for FEAGI neural processing across platforms2,461Apache-2.0 feagi-observabilityUnified observability infrastructure for FEAGI (logging, telemetry, profiling)2,707Apache-2.0 feagi-sensorimotorSensorimotor System - Data processing, caching, and neuron voxel encoding for FEAGI agents (sensory input and motor output)2,838Apache-2.0 feagi-serializationAdds serialization and deserialization to select Feagi Data Structures.3,533Apache-2.0 feagi-servicesFEAGI Service Layer - Stable application boundary for transport adapters1,842Apache-2.0 feagi-state-managerRuntime state management for FEAGI - cross-platform, RTOS-compatible2,292Apache-2.0 feagi-structuresThe most core library, defines the basic data types used by FEAGI, as well as some processors to modify them3,758Apache-2.0 feagi_connector_coreAdds Caching and Processing systems that are used by Feagi Connector10,404Apache-2.0 feagi_core_data_structures_and_processingA library for FEAGI libraries to use to handle data processing21,762Apache-2.0 feagi_data_serializationAdds serialization and deserialization to select Feagi Data Structures.11,430Apache-2.0 feagi_data_structuresThe most core library, defines the basic data types used by FEAGI, as well as some processors to modify them11,836Apache-2.0 fealtyA library for RPG character building and rules.21MIT feanor-mathA library for number theory, providing implementations for arithmetic in various rings and algorithms working on them.80,580MIT feanor-math-hexlA Rust wrapper for the Intel HEXL library.5,713MIT feanor-mempoolA simple interface to memory allocation and pooling, designed for use by feanor-math.5,993MIT feanor-serdeA library extending serde by some utilities for working with DeserializeSeeds3,563MIT feanor-tracingA simple tracing subscriber that prints an overview of the current state to stdout, and ignores short or deeply nested functions.154MIT fearlessfearless - runtime in progress1,637MIT OR Apache-2.0 fearless_simdSafer and easier SIMD2,419,024Apache-2.0 OR MITHardware support feastExperimental parsing library with a focus on bytes1,885MIT feat-hijektProcedural macros for hijakt feature based compile time code injection389MIT featbit-server-sdkFeatBit server-side SDK for Rust52Apache-2.0API bindingsWeb programming featbit-server-sdk-opentelemetryOpenTelemetry evaluation-event adapter for the FeatBit Rust server SDK42Apache-2.0API bindingsDevelopment tools::Debugging featherFeather: A minimal HTTP framework for Rust9,944MITNetwork programmingWeb programming feather-cliA CLI for Feather1,237MIT feather-db-cliCommand-line interface for Feather — embedded vector database + living context engine166MITCommand line utilitiesDatabase interfaces feather-f405Board support package for the Adafruit feather f4053,082MIT OR Apache-2.0Embedded developmentNo standard library feather-macroHelper macros for Feather UI library2,116Apache-2.0 feather-macrosProc-macros for Feather framework1,008MIT feather-readerA minimalist, atproto-native RSS/Atom reader in Rust — your feed subscriptions live in your own PDS.124AGPL-3.0-onlyWeb programming feather-runtimeWeb Server Runtime for Feather6,003MIT feather-tuiA crate for building simple terminal-based user interfaces.17,468Apache-2.0 feather-uiFeather UI library2,540Apache-2.0 feather_m0Board Support crate for the Adafruit Feather M040,119MIT OR Apache-2.0Embedded developmentHardware support feather_m4Board Support crate for the Adafruit Feather M427,607MIT OR Apache-2.0Embedded developmentHardware support featherbarFeatherweight macOS menu-bar system monitor — CPU, RAM, power, and temperature on two color-coded lines, zero background threads,…58Apache-2.0Command line utilitiesOperating systems::macOS APIs feathersPlaceholder for Feathers package manager1,227MIT featherstoneRobotics dynamics engine — O(n) forward/inverse dynamics for kinematic trees, contact solvers, and time integration33Apache-2.0ScienceSimulation featherweightBlock-based pico-process runtime using WASM sandboxes23Apache-2.0 featomicLibrary to compute representations for atomistic machine learning1,074BSD-3-Clause featrsFeature engineering library for Rust, inspired by scikit-learn150MITData structuresScience feattleFeatture toggles for Rust, extensible and with background synchronization and administration UI68,438MIT OR Apache-2.0ConfigurationData structures feattle-coreFeatture toggles for Rust, extensible and with background synchronization and administration UI73,301MIT OR Apache-2.0ConfigurationData structures feattle-syncFeatture toggles for Rust, extensible and with background synchronization and administration UI66,815MIT OR Apache-2.0ConfigurationData structures feattle-uiFeatture toggles for Rust, extensible and with background synchronization and administration UI70,146MIT OR Apache-2.0ConfigurationData structures featureSee out how Rust dependencies and features are enabled.11,698GPL-3.0-only feature-checkQuery a program for supported features7,226BSD-2-ClauseCommand line utilitiesParser implementations feature-extension-for-async-stdFeature extension for async-std38,046MIT/Apache-2.0 feature-extension-for-smolFeature extension for smol71,738MIT OR Apache-2.0 feature-extension-for-wasm-bindgen-futuresFeature extension for wasm-bindgen-futures71,572MIT OR Apache-2.0 feature-factoryA high-performance feature engineering library for Rust powered by Apache DataFusion1,321MIT OR Apache-2.0AlgorithmsData structures feature-flagServer-side feature flag evaluation for async Rust: targeting rules, sticky percentage rollouts, hot reload, zero RNG.19MITAsynchronousConfiguration feature-gateA simple macro for feature-gating modules and types2,836non-standard