All 305,250 crates, alphabetically

const_idGenerates unique IDs at compile time1,236MIT OR Apache-2.0 const_id_macroMacro crate for const_id1,270MIT OR Apache-2.0 const_init_buildGet Rust constant variables from configuration file at build time552MITConfigurationDevelopment tools::Build Utils const_init_macrosMacros to initialize custom types at build-time551MITConfigurationDevelopment tools::Build Utils const_internalsInternal macros for the constant crate. Not for external use!5,261Apache-2.0 const_irc_message_parserA 0 dependency, no_std, const-only parser for the IRC message protocol.13,058ISCNo standard libraryNo standard library::No dynamic allocation const_jsonProvides a way to embed and access const JSON in Rust code700MIT const_listA tiny linked list usable in const contexts.7,468MIT OR Apache-2.0 const_lookup_mapRust map that can be defined in a const context.1,591Unlicense const_mapMacro to define compile-time associated constant maps1,762MIT/Apache-2.0 const_num_bigintconst bigint78,202MIT OR Apache-2.0 const_num_bigint_deriveconst bigint77,675MIT OR Apache-2.0 const_opsconst-ready version of core::ops / std::ops arithmetic traits5,601GPL-3.0-only const_panicconst panic with formatting21,010,772ZlibNo standard library const_panic_proc_macrosImplementation detail of the `const_panic` crate13,042Zlib const_parseParses *any* input string into a `u128` value.99,298Zlib OR Apache-2.0 OR MITEncodingNo standard library const_polyEvaluate any multivariable equation or polynomial at compile time with high accuracy and zero runtime overhead.975MIT const_power_of_twoA crate for working with constant generics that are powers of two.4,314MIT OR Apache-2.0No standard library::No dynamic allocationRust patterns const_qoiA safe, 0 dependency, no_std streaming decoder/encoder library for the QOI (Quite Okay Image) format.2,526ISCMultimedia::EncodingMultimedia::Images const_queueA stack-only, no_std queue using const generics3,4180BSD const_ranged_intRanged constant integers. Useful for lookup tables with constrained values to avoid secondary bounds check.10,571Apache-2.0 const_shader_layoutCompile-time checks to ensure structs conform to WGSL's memory layout rules169MIT OR Apache-2.0 const_shader_layout_derivederive proc-macros for `const_shader_layout`83MIT OR Apache-2.0 const_sized_bit_setBitsets of all sizes an extensive array of associated functions.4,659MIT const_sizes提供友好可读的常量大小6,437Apache-2.0Embedded developmentMemory management const_soft_floatConst Soft Float Point5,440,412MIT OR Apache-2.0No standard library const_sort_rsSort slices in const items.9,877MIT OR Apache-2.0No standard libraryRust patterns const_std_vecconst std vec77,709MIT OR Apache-2.0 const_str_slice_concatUtilities for const concatenation of string slices.1,719,892MIT const_str_to_pubkeyA crate that helps you derive constant Solana Pubkey with constant string13,967WTFPL const_strcmpString compare as a const function1,539MIT const_stringify_intsConverts (generic) constant integers to &'static str1,646MIT OR Apache-2.0No standard libraryRust patterns const_structmacro that allows const structures to be passed as const generics14,423MIT/Apache-2.0 const_struct_derivemacro that allows const structures to be passed as const generics19,462MIT/Apache-2.0 const_strumConvert enum variants to strings in a constant context. (const str[ing] [e]num)2,838MIT const_sv2This crate holds all of the shared constants used across the different Stratum V2 protocols and roles crates35,964MIT OR Apache-2.0 const_time_enca Rust port of ParagonIE's constant time encodings for PHP1,886non-standard const_trait_implMoved to unconst_trait_impl due to collision between manually added dependency and implicit associated feature for the crate5,415MIT OR Apache-2.0Rust patterns const_traitsconst-ready version of core::convert / std::convert traits (+ const_ops)4,406GPL-3.0-only const_typedefine enum-like const-types, but with aliases for variants5,549MIT const_typed_builderCompile-time type-checked builder derive using const generics5,732MITDevelopment toolsRust patterns const_typed_builder_deriveCompile-time type-checked builder derive using const generics6,243MITDevelopment toolsRust patterns const_unit_pocProof of Concept: Physical units through const generics6,960MIT constaGit contribution statistics tool150MIT consta-poolA library implementing a constant product liquidity pool (a * b = k).1,292MIT constableconst lookup table generation3,157MIT OR Apache-2.0 constaesencrypt data at compilation time.3,315MIT constantConstant evaluation tools for Rust4,419Apache-2.0 constant-cstrCreate const instances of CStr at compile time2,780MIT OR Apache-2.0Development tools::FFIRust patterns constant-product-neoNeo N3 constant product AMM (Automated Market Maker) smart contract with swap fees and liquidity management23MITCryptography::CryptocurrenciesWebAssembly constant-stringConstant string.1,128MIT constant_sandboxTool for ruby codebases used to enforce boundaries and modularize Rails applications1,671MIT constant_sitesCompute the count of cases in constant sites in a (FASTA) multiple sequence alignment1,346MIT constant_time_eqCompares two equal-sized byte strings in constant time.271,087,554CC0-1.0 OR MIT-0 OR Apache-2.0CryptographyNo standard library constantfoldingApply constant folding on Aleph Syntax Tree.1,560non-standard constantine[WIP] Constant evaluation magic1,711MIT OR Apache-2.0 constantsA convenience library of constants1,845ISC constany_blankConvert any function to constant3,051AGPL-3.0-onlyDevelopment tools constany_stage_oneConvert any function to constant4,281AGPL-3.0-onlyDevelopment tools constany_stage_twoConvert any function to constant4,313AGPL-3.0-onlyDevelopment tools constapelA program to maintain constants throughout a web application.3,220MIT constatA toy program that counts and visualize the line of code owned by each author over time9,052MIT constcatconcat! with support for const variables and expressions14,887,032MIT OR Apache-2.0No standard libraryRust patterns constdbconstdb is a simple and fast read-only embedded key value datastore10,436MIT constdefaultA const Default trait1,632MITNo standard library constdefault-derive#[derive(ConstDefault)]3,364MIT constduckCompile-time ducktyping and reflection using const generics1,638MPL-2.0 constduck-procmacroMacro implementation of #[derive(ConstDuck)]2,412MPL-2.0 constellateConstellation Portal is a Rust-based CLI that converts curated markdown collections (requirements, ADRs, audits, tasks) into a…179MIT constellate-commonsReserved namespace for Constellate Commons: governance, standards, maintainers, and stewardship for the Constellate ecosystem.…18Apache-2.0 OR MITScience constellate-studioReserved namespace for Constellate Studio: the education and contributor onboarding product in the Constellate ecosystem. The…18Apache-2.0 OR MITScience constellationA data-oriented entity component system optimized for cache coherent resource access and parallel system execution.4,381Apache-2.0 constellation-internalCommon components for the `constellation` framework.21,364Apache-2.0AsynchronousConcurrency constellation-metagraph-sdkRust SDK for signing data and currency transactions on Constellation Network metagraphs built with metakit328Apache-2.0API bindingsCryptography constellation-metagraph-sdk-jlvmRust recreation of the metakit JSON Logic VM (JLVM), byte-compatible with the Scala evaluator. Foundation for a future zk-JLVM.92Apache-2.0 constellation-metagraph-sdk-poseidon-bn254Circomlib-compatible Poseidon hash over BN254 Fr and a fixed-depth sparse Poseidon Merkle tree, byte-compatible with metakit's…141Apache-2.0 constellation-rsConstellation is a framework for Rust (nightly) that aides in the writing, debugging and deployment of distributed programs.19,949Apache-2.0AsynchronousCommand line utilities constellation-serverPluggable authoritative DNS server. Entries can be added & removed from an HTTP REST API.58,219MPL-2.0Web programming constensor-coreExperimental ML framework featuring a graph-based JIT compiler.1,242MIT OR Apache-2.0Science constexpr-macrosMacros to define c++ like constexpr.4,209MIT/Apache-2.0 constfftA library crate providing an FFT API for arrays8,228MIT OR Apache-2.0AlgorithmsCompression constgebraConst Linear Algebra5,479,533MIT OR Apache-2.0No standard library constifyA procedural macro for basic static specialization.896MIT OR Apache-2.0 constimeZig's comptime for Rust with zero dependencies. Mostly something to play around with until more stuff is const fn.6,497MIT constitutionConstitution of the United States.404MIT constitutional-memoryTyped charter and archive surface crate with bounded amendment checks; not a hidden governance runtime92MIT constluaconst fn by lua1,590MIT OR Apache-2.0 constmuckconst-equivalents of bytemuck functions40,477ZlibNo standard library constmuck_internalinternal implementation detail of constmuck, all of this is unstable39,140Zlib constoaFormat integers into a byte buffer at compile time — const fn, panic-free, no_std, and dependency-free.15MIT OR Apache-2.0EncodingNo standard library constptrNonNull without mutability130,781MIT OR Apache-2.0No standard libraryRust patterns constrConstant string generics.689CC0-1.0 constrainedA collection of algorithms for constrained optimisation problems, written in Rust.2,830 constrained-connectionSimulate constrained network connections.6,542Apache-2.0 OR MIT constrained-inputsA crate to constrain io inputs4,092MIT constrained_intIntegers that are constrained within inclusive ranges.8,610MIT OR Apache-2.0AlgorithmsMathematics constrained_typeOn the fly value objects in Rust.16,168MIT/Apache-2.0 constrainerAn attempt to bring CAD concepts of constraints to variables in order to significantly reduce redundant instructions.3,583MIT constraintEasly create types with the guarantees you need1,715MIT OR Apache-2.0Development tools constraint-audioAudio DSP backend for the constraint-theory ecosystem — lattice oscillators, constraint filters, synth engine16MIT OR Apache-2.0Multimedia::Audio constraint-compilerDeterministic projection-to-inference graph compiler for the recursive inference kernel265MITAlgorithmsCompilers constraint-crdtCRDT-backed constraint states for distributed fleet consensus96MITConcurrencyData structures constraint-decoding-trieGenerative Retrieval: Transition Matrix Trie for Constraint Decoding (STATIC)20Apache-2.0AlgorithmsMathematics constraint-dynamicsPhysics of constraints — propagation, collision, and emergent structure in agent systems17MIT constraint-hamiltonianHamiltonian constraint systems on graphs with symplectic integration17MIT constraint-muxSerial port multiplexer with real-time consonance analysis — collaborative constraint-aware instrument bridge18MIT constraint-scheduleConstraint-satisfaction scheduling for agent task allocation — CSP solver with AC-3 and simulated annealing16MIT constraint-solverA small, generic nonlinear constraint solver with symbolic expressions, compilation, and a modified Newton-Raphson method.49MITAlgorithmsMathematics constraint-theoryConstraint theory umbrella — unified API for snap, holonomy, manifold operations18MITMathematicsScience constraint-theory-coreDeterministic manifold snapping with O(log n) KD-tree indexing — maps continuous vectors to exact Pythagorean coordinates376MITAlgorithmsGame development constraint-theory-core-cudaCUDA FFI bridge for constraint-theory-core — GPU-accelerated parallel CSP solving16Apache-2.0AlgorithmsHardware support constraint-theory-demoSelf-contained constraint theory demo — snap, holonomy, angular NN, self-consistency quine on Pythagorean manifolds46MIT OR Apache-2.0AlgorithmsMathematics constraint-theory-llvmLLVM backend for constraint theory — CDCL → LLVM IR → AVX-512 with direct x86-64 emission113Apache-2.0AlgorithmsHardware support constraint-theory-metricsBenchmarking and analysis tools for constraint theory — distribution analysis, correctness verification, performance measurement51MITDevelopment toolsMathematics constraint-theory-nnNearest-neighbor lookup on the Pythagorean manifold — exact 1-NN with O(log n) binary search49MITAlgorithmsMathematics constrangeiterConstant iterators for ranges419MITAlgorithmsData structures constrictionEntropy coders for research and production (Rust and Python).32,809MIT OR Apache-2.0 OR BSL-1.0CompressionNo standard library constructA macro for building container literals.6,495MIT construct-coreHardware-agnostic agent runtime with layered trait system for the SuperInstance Construct API79MITAsynchronousEmbedded development constructionCon-struct-ion - Marcos for generating struct definitions1,523MIT OR Apache-2.0 constructiveNavmesh and path finding library based on constructive solid geometry815MIT constructivismSimplify the construction of structured data.3,905MIT OR Apache-2.0 constructivism_macroSimplify the construction of structured data.3,194MIT OR Apache-2.0 constructivism_macro_genMacro helper for constructivist4,142MIT OR Apache-2.0 constructivistSimplify the construction of structured data.3,717MIT OR Apache-2.0 constructorstatic initializers2,163MIT/Apache-2.0 constructor-liteGenerate minimal constructors for structs4,108MITRust patterns constructor-macroDerive constructor macros for structs7,474MIT constructor_macro_internalA derive proc-macro that automatically derives a constructor for your struct!141MIT OR Apache-2.0 construeCompile-Time Growable Array: Vec & String for const!5,043GPL-3.0-or-laterData structuresNo standard library construstorA tool for analyzing Solidity smart contracts to detect zero address validation patterns1,110MITCommand line utilitiesDevelopment tools constunevalSimple serializer to embed structs/tables as const Rust code using Debug trait1,730MITDevelopment tools::Build Utils constvecno heap vec in const expr11,010MIT consulRust client libray for Consul HTTP API72,083MIT/Apache-2.0 consul-clientConsul client2,283Apache-2.0 consul-kv-triggerWatch Consul KV and act on changes1,581MIT OR Apache-2.0 consul-patch-jsonA tool to patch json values for consul keys3,911MIT consul-rsconsul api19,556MIT OR Apache-2.0 consul-rs-plusA plus consul client package for Rust, more functions for micro service.11,333MIT/Apache-2.0 consul2Rust client libray for Consul HTTP API22MIT/Apache-2.0 consul_rustConsul for rust2,180MIT consulrsAn asynchronous Rust client library for the Hashicorp Consul API.26,656MIT consulrs_deriveA derive macro for implementing query options for Consul endpoints34,256MIT consult-llmCLI for consulting stronger LLMs from your agent workflow430MITCommand line utilities consult-llm-coreCore library for consult-llm674MIT consult-llm-monitorLive TUI monitor for consult-llm runs410MIT consulxA pure-HTTP Consul KV CLI + REPL built from scratch96MITCommand line utilitiesDevelopment tools consumableConsume the value by replacing it with the default value and returning the previous value1,074MIT OR Apache-2.0Rust patterns consumable_vecConsumable_Vec is a generic approach to create a mutual database for multiple producers and consumers1,883non-standard consumeMemory order consume for when it's known that the compiler can't elide the dependency3,773MITAlgorithmsConcurrency consume-iteratorConsume any iterator fully5,153MITNo standard libraryNo standard library::No dynamic allocation consume-outputAdds a trait to consume the output of a function.2,724MIT consume_on_dropA zero-cost abstraction that allows Drop::drop to consume self by value235,666MITNo standard library::No dynamic allocationRust patterns consume_ptrattempt to generalize unwrapping behavior for pointer types, also to provide better way of transferring ownership of unsized types6,195MIT contaTool for bumping and publishing crates.2,803GPL-3.0-only contackA simple and easy contact library.25,184MIT OR Apache-2.0Data structures contack_vcardA simple library to convert Contack's Contact to VCard4,787MIT OR Apache-2.0 contactA highly portable REST library for Cosmos blockchains56,432Apache-2.0 contact-tracingImplementation of the apple/google contact tracing protocol4,351Apache-2.0 Contact_BookA rust contact book49MIT contact_book_parser_protsapParser for a contact book794MIT contactorA distributed, eventual persisted, websockets framework.1,173MIT contactsSafe Rust bindings for Apple's Contacts framework — address book access on macOS191MIT OR Apache-2.0API bindingsOperating systems::macOS APIs containA crate for defining/extending lifetimes8,824MIT OR Apache-2.0Memory management contain-rsRun containers with docker or podman19,705MITDevelopment tools::Testing contain-rs-coreRun containers with docker or podman17,549MITDevelopment tools::Testing contain-rs-macroRun containers with docker or podman15,236MITDevelopment tools::Testing contain-rs-nginxRun containers with docker or podman13,019MITDevelopment tools::Testing contain-rs-parserRun containers with docker or podman15,749MITDevelopment tools::Testing contain-rs-postgresRun containers with docker or podman10,865MITDevelopment tools::Testing contain-rs-surrealdbRun containers with docker or podman10,861MITDevelopment tools::Testing containedcontained works to provide several macros and interface for transparent wrapper types in Rust.13,127Apache-2.0 contained-actorscontained is a research project implementing the proposed harmonic runtime for orchestrating cloud-native systems1,599Apache-2.0 contained-coreThe core crate for the contained project, providing essential abstractions and utilities.10,313Apache-2.0 contained-deriveuseful derive macros for the scsys ecosystem5,075Apache-2.0 contained-macrosprocedural macros for managing wrappers6,932Apache-2.0 contained-musiccontained is a research project implementing the proposed harmonic runtime for orchestrating cloud-native systems2,002Apache-2.0 contained-netcontained is a research project implementing the proposed harmonic runtime for orchestrating cloud-native systems3,156Apache-2.0 contained-turingcontained is a research project implementing the proposed harmonic runtime for orchestrating cloud-native systems1,967Apache-2.0 containera container lib2,960 container-broadcastA Rust analog of Julia's broadcast interface.9,824MIT/Apache-2.0MathematicsScience container-composeA docker-compose like tool for Apple Containers1,345non-standardCommand line utilities container-device-interfaceCDI (Container Device Interface), is a specification, for container-runtimes, to support third-party devices.175,842Apache-2.0Command line utilities container-image-refContainer Image Referneces3,367Apache-2.0 container-pidResolve container names to their PIDs14,092MITOperating systems::Linux APIs container-rack-libSimple cli tool and library for generating storage shelfs for Smartstore containers3,809non-standard container-registryA minimal implementation of an OCI container registry, usable as crate or binary28,871MIT container-rssimple container cli and lib!6,040MIT container-runAn opinionated wrapper for running commands in containers12,509GPL-3.0-or-later container-specOCI runtime specification for Rust.1,779Apache-2.0 container-whatDetect if we are running in a container.2,079non-standardCommand line utilities container_image_dist_refA library for parsing and validating container image references.11,862Apache-2.0 container_literalsvec! like macros for creating maps and sets.4,243GPL-2.0 container_ofPorting C's `container_of` macro to Rust22,204MIT container_traitsTraits for container types43MITData structuresNo standard library::No dynamic allocation containerdcontainerd sdk1,719MIT containerd-clientGRPC bindings to containerd APIs1,151,984Apache-2.0API bindingsAsynchronous containerd-runc-shimRust implementation of containerd's runc v2 shim runtime2,936Apache-2.0 containerd-shimcontainerd shim extension332,131Apache-2.0API bindingsAsynchronous containerd-shim-clientTTRPC bindings for containerd shim interfaces3,569Apache-2.0API bindings