CATEGORY
Data structures 10,114 crates
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.
fukurow-dlOWL DL reasoning engine for Fukurow (complete tableau algorithm with individual reasoning)265MIT OR Apache-2.0
pollinationAn experimental library exposing hybrid Raft and CRDT primitives.265MIT OR Apache-2.0
hedl-streamStreaming parser for HEDL - memory-efficient processing of large files265Apache-2.0
verdict-coreHigh-performance data validation engine for tabular data265MIT
hash-linkKeep elements insert order while searchable by hash265MIT
aegis-serverAPI server for Aegis database265LicenseRef-BSL-1.1
tusker-query-modelsShared models for checked SQL query metadata and type information265MIT OR Apache-2.0
mallardA line-oriented text buffer using an immutable green/red model with cheap branching and undo/redo.264MIT
openvet-treeContent-addressed Merkle search tree (dense skip-tree) for OpenVet.264MIT OR Apache-2.0
cap_vecA no_std heap-backed vector with fixed compile-time maximum capacity.263MIT
superqueueA tiny, lock-light, type-routed message bus providing event streams and latest-value topics (snapshots) for fast state and event…262MIT
qoxideA lightweight local job queue backed by SQLite262MIT
rouchdb-viewsDesign documents and persistent views for RouchDB262MIT
persona-wire-adapter-githubpersona-wire Adapter for GitHub (scheme `github://`). Fetches issues / pull requests / releases via the GitHub REST API, with…262MIT OR Apache-2.0
persona-wire-adapter-rsspersona-wire Adapter for RSS/Atom/JSON feeds (scheme `rss://`). Fetches a feed over HTTP(S) and normalizes it to a compact JSON…262MIT OR Apache-2.0
persona-wire-adapter-slackpersona-wire Adapter for Slack (scheme `slack://`). Fetches conversation lists / channel history / user info via the Slack Web…262MIT OR Apache-2.0
ider高性能时间戳ID生成器 / High-performance timestamp ID generator261MulanPSL-2.0
idiolect-indexerFirehose consumer for dev.idiolect.* records, built on top of tapped. Decodes commits into AnyRecord and dispatches them through…261MIT
faultline_coreCanonical domain models, identifiers, and manifests for FaultLine.261MIT
flighthookflighthook event bus types and schemas261MIT OR Apache-2.0
wp-source-typesCommon source-side connector types — Tags, SourceEvent, SourceBatch — shared across WP connector crates260Apache-2.0
hxrts-aura-relationalRelationalContext implementation for cross-authority coordination in Aura260Apache-2.0
moloch-chainChain operations for Moloch audit chain260MIT
neumann_parserHand-written recursive descent parser for the Neumann query language260MIT OR Apache-2.0
tensor_vaultAES-256-GCM encrypted secret storage with graph-based access control260MIT OR Apache-2.0
tensor_unifiedCross-engine unified query execution for Neumann260MIT OR Apache-2.0
epcis-modelsType-safe GS1 EPCIS 2.0 event models implemented natively in Rust.260MIT OR Apache-2.0
vigil-auditAppend-only audit ledger for Vigil with SQLite backend, SHA256 hash chain, and FTS5 search — tamper-evident decision/effect…259Apache-2.0
cortex-coreTIBET Cortex core types: TBZ envelopes, TIBET tokens, and crypto primitives259MIT OR Apache-2.0
tensor_blobContent-addressable blob storage with streaming and garbage collection259MIT OR Apache-2.0
tensor_cacheMulti-layer LLM response cache with exact, semantic, and embedding lookup259MIT OR Apache-2.0
tensor_checkpointCheckpoint and rollback system for Neumann database259MIT OR Apache-2.0
copybook-corruption-detectorsFocused corruption detectors for transfer-corruption heuristics.259AGPL-3.0-or-later
aegis-replicationDistributed replication for Aegis database259LicenseRef-BSL-1.1
kremis-coreDeterministic graph engine for grounded AI - every query returns fact, inference, or unknown. Never invents.258Apache-2.0
copybook-optionsConfiguration option contracts shared across copybook codec workflows258AGPL-3.0-or-later
copybook-fixedFixed-length (LRECL) record framing reader/writer primitives for copybook-rs258AGPL-3.0-or-later
zenops-expandString newtype with `${name}` placeholders that must be expanded before use.258MIT OR Apache-2.0
copybook-corruption-rdwSingle-purpose RDW ASCII-heuristic corruption detection.258AGPL-3.0-or-later
omega-agentdbAdvanced vector database with ruvector integration for agent storage and skill management257MIT
rxgraphHigh-performance graph traversal engine257MIT
frp-plexusShared primitives for the infinite-db frp backend: typed IDs, SPC encoding, types, and values.257MIT OR Apache-2.0
copybook-rdwRDW framing microcrate with header primitives, reader/writer, and buffered helpers257AGPL-3.0-or-later
egui-commandPure command model for egui apps — no egui dependency257MIT OR Apache-2.0
aegis-monitoringMonitoring and observability for Aegis Database257LicenseRef-BSL-1.1
persona-wire-adapter-notionpersona-wire Adapter for Notion (scheme `notion://`). Fetches search results / database (data source) queries / page blocks via…257MIT OR Apache-2.0
omega-memory12-tier cosmic memory system with automatic consolidation (Instant → Omega)256MIT
copybook-sequence-ringDeterministic sequence reordering primitive for parallel copybook pipelines256AGPL-3.0-or-later
omega-loops7 temporal cognitive loops from Reflexive (1ms) to Transcendent (10y) for multi-scale processing255MIT
fast-sparse-merkle-treeFast Sparse Merkle Tree (SMT) library in Rust, using TurboSHAKE128 as default hash function255MIT
bare-typesA zero-cost foundation for type-safe domain modeling in Rust. Implements the 'Parse, don't validate' philosophy to eliminate…255MIT OR Apache-2.0
gpq-tiles-coreCore library for converting GeoParquet to PMTiles vector tiles255Apache-2.0
ld-lucivy-sstablesstables for lucivy254MIT
crtx-memoryMemory lifecycle, salience, decay policies, and contradiction objects.254MIT OR Apache-2.0
odin-coreODIN (Open Data Interchange Notation) parser, serializer, validator, and transform engine254Apache-2.0
surrealism-cliCLI for Surrealism253non-standard
swf-coreServerless Workflow DSL models — data structures, serialization, and validation253Apache-2.0
cityjsonTypes and accessor methods for representing semantic 3D city models in Rust, implementing the CityJSON specifications.253MIT OR Apache-2.0
dtcsReference implementation of the Data Transformation Contract Standard (DTCS)253Apache-2.0
fast-decisionHigh-performance rule engine252MIT OR Apache-2.0
pulith-versionVersion parsing, matching, and selection policies for Pulith252Apache-2.0
chinese-validator-coreCore validation logic for Chinese data (address,id_card, license_plate,name, phone, postal_code,qq,username,etc.)252MIT
hap-modelHomeKit Accessory Protocol attribute database: accessory/service/characteristic model and HAP-defined types.251Apache-2.0
qudit-circuitAccelerated and Extensible Quantum Library250BSD-3-Clause
xiaoyong-valueCollection of sharing state primitives for async contexts (both Sync and !Sync)250MIT OR Apache-2.0
dicom-mapMemory-mapped O(1) DICOM tag dictionary250Apache-2.0
rdom-styleCSS data model + property dispatch for rdom — TuiStyle, Stylesheet, ComputedStyle, the property→value table. Leaf crate, no…250MIT
pebbledbA Rust port of CockroachDB's Pebble — an LSM key-value store (LevelDB/RocksDB lineage), binary-compatible with Pebble's on-disk…250BSD-3-Clause
cordageGeneric graph core: typed overlays, deterministic ordering, channel propagation250GPL-3.0-only
omega-meta-sonaSelf-Optimizing Neural Architecture (META-SONA) with evolutionary search and fitness evaluation249MIT
pbnProgramming by Navigation types and traits249MIT OR Apache-2.0
kronroeEmbedded temporal property graph database248AGPL-3.0-only
arity-arraysFixed and pointer-sized heap-packed arrays over a generic arity, indexed without bounds checks248MIT
lat-longGeographic latitude/longitude coordinate types with multiple numeric backends248MIT OR Apache-2.0
mnemara-store-sledLocal-first, explainable AI memory engine for embedded and service-based systems248MIT
cairn-coreCore types, storage, and query engine for Cairn knowledge provenance247MIT
typesShared types and DTOs for the Liturgy workspace.247MIT OR Apache-2.0
sif-parserComplete implementation of the Structured Interchange Format (SIF) — parser, emitter, streaming protocol, packed binary encoding,…247MIT
reliakit-collectionsBounded and reliability-oriented collection types for Rust.247MIT
context69-contractsShared request and response types for the Context69 API.247Apache-2.0
ironstate-aggregateDeterministic aggregates: decide/evolve, entropy, redaction, StableHash247Apache-2.0
gatekeepCode-first authorization engine for Rust246MIT OR Apache-2.0
arch-satellite-collectionsCollection data structures and helpers for the Satellite Bitcoin project.245MIT OR Apache-2.0
leindexLeIndex MCP and semantic code search engine for AI tools and large codebases245MIT OR Apache-2.0
lockout-channelLock-free unbounded MPMC channel using hazard pointers244MIT
tx2-querySQL analytics layer for TX-2 ECS - one-way synchronization from ECS to SQL databases244MIT
oximedia-clipsProfessional clip management and logging system for OxiMedia244Apache-2.0
synheart-fluxOn-device compute engine for HSI-compliant human state signals244Apache-2.0
nostro2-cacheMutex-guarded LRU event-ID deduplication cache for the Nostr protocol.244MIT
hadrone-coreCore layout engine: compaction, collisions, and layout validation243MIT OR Apache-2.0
not_redisA Redis-compatible in-memory data structure library for Rust243MIT
philiprehberger-cache-kitGeneric LRU cache with TTL, tags, and async support for Rust243MIT
lake-pulseA Rust library for analyzing data lake table health across multiple formats and storage providers.242MIT OR Apache-2.0
wtx-apisA set of API collections based on the wtx framework242Apache-2.0
dynomite-searchRediSearch FT.* command surface for the Dynomite engine: vector + text indexing, schema, registry, k-NN coordinator, and RESP…242Apache-2.0
locksThread-safe type wrappers241MIT
lunaris-extractLLM-backed entity, relation, and fact extractor for Lunaris241Apache-2.0
fabulaIncremental pattern matching over temporal graphs — core library241MIT
polarisdb-coreCore library for PolarisDB - an embedded vector database for local AI241MIT OR Apache-2.0
owl-dl-coreCore IR, normalization, and shared utilities for the rustdl OWL DL reasoner241Apache-2.0 OR MIT
photomRust library for loading, structuring and querying astronomical observation datasets — with trajectory grouping, multi-observer…241non-standard
utf8dok-astAbstract Syntax Tree definitions for utf8dok240MIT OR Apache-2.0
loglineLogLine: full stack bundle (TDLN + JSON✯Atomic + LogLine core + LLLV) with CLI.240MIT
nostr-bbs-configOperator-supplied TOML configuration kit for self-hostable nostr-bbs community forum deployments240AGPL-3.0-only
nectar-postage-issuerPostage stamp issuing and signing for Ethereum Swarm239AGPL-3.0-or-later
nusy-graph-queryGraph-native semantic search for Arrow RecordBatches — embeddings, traversal, hybrid ranking, and caching239MIT
crdt-data-typesHigh-performance CRDT library with dual pathways: JSON-native for web APIs and Cap'n Proto zero-copy for binary transport239MIT
oximedia-mamMedia Asset Management system for organizing and tracking media files238Apache-2.0
axhash-dashmapConcurrent DashMap and DashSet powered by dashmap (multi-shard RwLock) and fueled by axhash (AES-NI accelerated hashing).238MIT
dog-schemaSchema definition and validation utilities for DogRS - JSON schema, validation, and type safety238MIT OR Apache-2.0
arkhe-forge-coreL1 primitives for ArkheForge Runtime: Core 5 (User / Actor / Space / Entry / Activity) + ShellBrand invariant-lifetime isolation…238MIT OR Apache-2.0
bonbonA sweet and simple Rust library for generating static diabetes data visualizations.238MPL-2.0
win-security-identifier-parsingCore parsing processing for the win-security-identifier project do not use it directly use win-security-identifier instead238MIT OR Apache-2.0
dent8A memory firewall for coding agents — the library facade (event model, firewall, stores).238Apache-2.0 OR MIT
mako-mabisMABIS process engine for German electricity market balance group accounting (Marktprozesse Bilanzkreisverantwortlicher)238MIT OR Apache-2.0
fastarenaA zero-dependency, bump-pointer arena allocator with RAII transactions, nested savepoints, optional LIFO destructor tracking, and…237MIT
kyyn-coreCore vocabulary for kyyn: registry, links, query AST, plugin and validation contracts for typed, git-backed knowledge bases.237MIT OR Apache-2.0
mako-redispatchRedispatch 2.0 process engine for German grid congestion management (§§ 13, 13a, 14 EnWG)237MIT OR Apache-2.0
triviumdbA high-performance memory-mmap hybrid search engine built for AI, combining dense vector, sparse text, graph relations, and JSON…236Apache-2.0
agentic-timeTemporal reasoning for AI agents236MIT
ai2070-netHigh-performance, schema-agnostic, backend-agnostic event bus236Apache-2.0
kovan-stmSoftware Transactional Memory (STM) implementation using Kovan for memory reclamation236Apache-2.0
pud-macrosGenerate typed, composable, no-std-friendly modifications (“puds”) for Rust structs.236WTFPL
cypherlite-queryCypher query engine with parser, planner, and executor for CypherLite235MIT OR Apache-2.0
dzeroDomain-agnostic reactive fact engine. Generic FSE saturation core.235MIT
aleo-coreData model for Leo documents (DAG=Directed - Acylic - Graph)235MIT
bachelorPure single-threaded utilities optimized for thread-per-core executors235MIT OR Apache-2.0
agentic-contractPolicy engine for AI agents — governance, risk limits, approvals, and compliance234MIT
magic_capMagic Cap is a user-friendly tool for encrypted files.234AGPL-3.0-or-later
philiprehberger-task-queueIn-process thread-based task queue with priority and concurrency control234MIT
sngram-typesShared types for sparse n-gram extraction and weight tables234MIT
mako-gabi-gasGaBi Gas process engine for German gas market balancing communication (Gasbilanzierung) — coming soon234MIT OR Apache-2.0
hedlHEDL - Hierarchical Entity Data Language233Apache-2.0
ifc-lite-core-catHigh-performance IFC/STEP parser for building data, built on comp-cat-rs233MIT OR Apache-2.0
topodbEmbedded, local-first memory engine for AI agents: temporal property graph + scoped recall.233MIT OR Apache-2.0
fin_decimalA high-performance decimal fixed-point arithmetic library for financial applications233BSD-4-Clause
agility-macrosProcedural macros for the Agility reactive programming library232MIT OR Apache-2.0
ironfix-codegenBuild-time code generation for IronFix FIX protocol engine232MIT
ucp-agentAgent graph traversal system for UCP knowledge graphs232MIT
lockout-hazardLock-free hazard pointers for safe memory reclamation232MIT
crtx-retrievalHybrid retrieval over memory views (lexical + salience; vectors later).232MIT OR Apache-2.0
mako-nbwNetzbetreiberwechsel process engine for German energy market DSO concession change (PARTIN-based market location transfer) —…232MIT OR Apache-2.0
vectx-coreCore library for vectX vector database - HNSW indexing, SIMD operations, BM25 search231MIT OR Apache-2.0
fugue-ustrFast, FFI-friendly string interning.231BSD-2-Clause-Patent
dearcutDynamic earcut-based triangulation (soon-to-be) optimized for fast incremental insertions and removals. Mutating doesn't…230MIT OR Apache-2.0
keymap-seqMulti-key sequence resolution for keymap-rs (leader keys, C-x C-s)230MIT
inline-config-macrosProcedual macros for inline-config230MIT OR Apache-2.0
philiprehberger-feature-flagsIn-memory feature flag evaluation with rollout, environment, targeting, and A/B variant support for Rust230MIT
sorla-provider-coreShared SoRLa provider contracts and metadata.229MIT
tramli-pluginsPlugin pack for tramli — audit, eventstore, observability, resume, idempotency, hierarchy, diagram, docs, lint, testing, subflow229MIT
fugue-tinysetSize-optimized sets228MIT OR Apache-2.0
openvet-logSigned skipchain commit log over a Merkle search tree for OpenVet.228MIT OR Apache-2.0
mako-geli-gasGeLi Gas process engine for German gas market communication (Geschäftsprozesse Lieferantenwechsel Gas)228MIT OR Apache-2.0
oxigdal-streamingReal-time data processing and streaming pipelines for OxiGDAL227Apache-2.0
ocel-etlETL engine for OCEL 2.0 process mining: staging representation with a validation gate226MIT
scheduled_channelA mpmc channel that allows specifying a timestamp for when a message is received226Apache-2.0
tokmd-substrateShared repo substrate context for cross-sensor coordination.226MIT OR Apache-2.0
ironstate-journalEvent journal for ironstate aggregates: append/snapshot/replay/fork/subscribe226Apache-2.0
quarb-composeAdapter composition: parseable leaf content grafts an inner arbor226MIT OR Apache-2.0
structecsA structural data access framework. Type-safe extraction from nested structures with Arc-based smart pointers.225MIT
nexcore-idZero-dependency UUID implementation for NexVigilant Core ecosystem225MIT OR Apache-2.0
tcs-schemaSchema AST types for TCS (Tape Canonical Serialization)224MIT
epistemeKnowledge graph for software engineering — design patterns, refactorings, and laws for AI agents224Apache-2.0
oxigdal-indexPure-Rust spatial index (R-tree) for OxiGDAL vector data223Apache-2.0
aographAND-OR graph data structures and algorithms223MIT OR Apache-2.0
datalog_irIntermediate Representation types for Datalog query plans222MIT OR Apache-2.0
umao_coreUMAO spec primitives — Graph IR, validation, scheduling, events, planner types. WASM-safe.221Apache-2.0
shodh-redbMulti-modal embedded database - vectors, blobs, TTL, merge operators, and causal tracking built on ACID B-trees220Apache-2.0
rustenium-bidi-commandsWebDriver BiDi command types and structures for Rustenium219MIT
mkit-transport-fileFile-system transport for mkit, used in tests and local content-addressed repositories219MIT OR Apache-2.0
mkit-transport-sshSSH transport for mkit using a forced-command server pattern over a system ssh(1) child process219MIT OR Apache-2.0
codedash-schemasStable public schema for codedash code metrics output — JSON Schema + Rust types219MIT
studio-bridge-msgsShared wire types for the Semio Studio Bridge: device info, state changes, and Zenoh key/encoding formats.219MIT
sfidDistributed Snowflake ID generator with Redis-based auto machine ID allocation / 基于 Redis 自动分配机器号的分布式雪花 ID 生成器218MulanPSL-2.0
evidentsource-coreCore types for the EvidentSource event sourcing platform218MIT OR Apache-2.0
agentic-realityExistential grounding system for AI agents — deployment awareness, resource proprioception, reality physics217MIT
neco-astzero dependency structured data access traits217MIT
shiplog-mergeMerging utilities for combining multiple event sources.217MIT OR Apache-2.0
multi-traitCommon traits for multiformats types217Apache-2.0
junkdrawerA crate for all kinds of utilities.216MIT OR Apache-2.0
manifoldb-queryQuery parsing, planning, and execution for ManifoldDB216MIT OR Apache-2.0
mako-gpkeGPKE process engine for German electricity market communication (Lieferbeginn, Lieferende, Netznutzungsabrechnung)216MIT OR Apache-2.0
redispatch-xmlRedispatch 2.0 XML/XSD format parsing and validation for the German electricity grid (CIM/ENTSO-E-based, per BDEW specifications)216MIT OR Apache-2.0
beakidSnowflake-like 64-bit unique ID generator with PostgreSQL BIGINT-friendly i64 IDs.215MIT
validator-rsA comprehensive validation library for Rust providing validators for email, URL, mobile phone numbers (150+ countries), credit…215MIT OR Apache-2.0
pulith-resourceComposable resource description types for Pulith215Apache-2.0
ethos-bitcoindGenerated client for ethos-bitcoind.215CC0-1.0
rt-eventsMicrosecond pub/sub. A couple of Vecs. Four functions.215MIT OR Apache-2.0
bidimapBijective maps215Apache-2.0/MIT
kremoryBi-temporal knowledge graph engine + agent memory orchestration in pure Rust214Apache-2.0
mako-wimWiM process engine for German smart-meter market communication (Wechsel des Messstellenbetreibers)214MIT OR Apache-2.0
oakvcs-coreCore version-control primitives for Oak: BLAKE3 content hashing, content-defined chunking, diff/merge, the…213Apache-2.0
agentic-forge-coreBlueprint engine for complete project architecture before code generation213MIT
ctxguardA library for managing contexts.213MIT
copybook-determinismDeterminism primitives for stable hash/diff comparison in copybook-rs213AGPL-3.0-or-later
copybook-codec-memoryReusable memory utilities for copybook codec streaming and parallelism.213AGPL-3.0-or-later
copybook-overpunchZoned decimal overpunch encode/decode primitives for copybook-rs213AGPL-3.0-or-later
copybook-record-ioRecord-format dispatch microcrate bridging fixed and RDW framing primitives213AGPL-3.0-or-later
copybook-corruptionTransfer-corruption detection microcrate for codec heuristics.213AGPL-3.0-or-later
vertrule-schemasCanonical schema types for the VertRule constitutional layer212Apache-2.0