CATEGORY
Database implementations 1,313 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.
lance-index-coreCore traits and types for Lance index plugins39Apache-2.0
daoql-eduDaoQL 教学版 — 多模态数据引擎教育项目39Apache-2.0
hyphae-serverSecure loopback-first HTTP server for the Hyphae data engine.39Apache-2.0
infinite_db_stepImport STEP (ISO 10303-21) CAD files into InfiniteDB spatial records39MIT
quipu-serverStandalone audit-log daemon over quipu-core: central append/query HTTP API for polyglot, multi-service deployments.39Apache-2.0
kuatiaAppend-only, auditable, multi-asset UTXO-style ledger: async resource and saga commit pipeline.39Apache-2.0
openraft-surrealkvA simple key-value store built on top of OpenRaft, designed for learning and experimentation with Raft consensus algorithm.38MIT OR Apache-2.0
astradAstra server daemon exposing etcd-compatible APIs for control-plane workloads38MIT
astra-forgeMigration and bulk-load tooling for converging external control-plane stores into Astra38MIT
rusted_graphsGraph DB supporting dynamic nodes and edges, written in Rust37CC-BY-SA-4.0
basemyai-coreBusiness-agnostic embedded foundation: libSQL (native vector + encryption), Candle embeddings, async maintenance.36MIT
knowledge-dbSelf-organizing Markdown knowledge store for AI agents — append, search with query alias expansion, autotune, virtual filesystem36MIT
quipu-mcpModel Context Protocol server exposing a Quipu-Log audit store to LLM agents: query logs, walk entity history, and verify store…36Apache-2.0
mcp-memory-rsLocal-first MCP memory server with per-device ACL and fleet sync36Apache-2.0
kronroe-androidAndroid JNI bindings for Kronroe35AGPL-3.0-only
siraA general-purpose embedded KV store built around sequential composition — order is a batch property, not an online one.35MIT OR Apache-2.0
ruve-dbA hybrid vector and full-text search database with HNSW approximate nearest-neighbour indexing and BM2535MIT
kronroe-iosiOS FFI bindings for Kronroe34AGPL-3.0-only
kronroe-wasmKronroe temporal graph database — WebAssembly bindings34AGPL-3.0-only
sukariShared append-segment Raft state storage for noraft-based applications34MIT
neodbA fast, lightweight key-value database written in Rust. (Work in Progress)34MIT
ffindexrsA Rust implementation of FFindex, a simple index/database for huge amounts of small files.34Apache-2.0
post-cortexIntelligent conversation memory system for AI assistants — persistent knowledge storage, semantic search, knowledge graph, MCP +…34MIT
quipu-clientReference client for quipu-server: timeouts, exponential backoff with jitter, idempotent retransmission, and an opt-in local disk…34Apache-2.0
minisqliteA minimal, from-scratch SQLite-like relational database engine in Rust34MIT
fioleAn opinionated wrapper around fjall33MIT OR Apache-2.0
pocket-lsmA small educational LSM storage engine with WAL, SSTables, manifests, and crash recovery.33MIT
vantadbVantaDB: An embedded persistent memory and vector retrieval engine for local-first AI applications.32Apache-2.0
avx-arrowZero-copy columnar format with scientific arrays (Quaternions, Complex, Tensors, Spinors), SIMD acceleration (35x), and native…32MIT OR Apache-2.0
hyphae-cliSingle-binary CLI, server, verifier, and MCP adapter for Hyphae.32Apache-2.0
seekstorm_serverVector & lexical search engine library & multi-tenancy server32Apache-2.0
akita_codegenAkita - Mini orm for rust.31MIT
hyphae-pliegorsOptional public-contract adapter between PliegoRS and Hyphae.31Apache-2.0
chisel-storageTransactional slot-based storage engine with shadow paging31MIT
anam-cliInteractive CLI / REPL for AnamDB.30Apache-2.0
osmiumdbA dense, chunk-oriented database engine with explicit hot/cold memory control30MPL-2.0
prolly-store-tursoNative Turso Database store adapter for prolly-map.30MIT OR Apache-2.0
append_kvA simple, persistent append-only key-value store built in Rust.29MIT OR Apache-2.0
graphlinkA memory-safe, relational in-memory graph database.29MIT
tensordbTensorDB — single-node, append-only, bitemporal ledger database with MVCC snapshot reads and SQL facet28PolyForm-Noncommercial-1.0.0
lsm_storage_engineA high-performance, zero-dependency LSM-Tree storage engine in pure Rust.28MIT
rustypotatoA high-performance Redis-compatible key-value store28MIT OR Apache-2.0
braid-coreUnified Braid Protocol implementation in Rust, including Braid-HTTP, Antimatter CRDT, and BraidFS.28MIT OR Apache-2.0
donadb-xLock-free, memory-mapped storage engine for blockchain validator state. Commutative append log, N-shard atomic buffer swap,…27Apache-2.0 OR MIT
pagedbEncrypted, portable, embedded page store with B+ tree and segment-file surfaces.27MIT OR Apache-2.0
wrayStandardised data storage for diffuse reflectance spectroscopy imaging, written in Rust.26BSD-3-Clause
cuendillarEmbedded persistent key–value storage engine (LSM-tree based)26MIT
meebisA fast, disposable, in-memory Redis-compatible server for ephemeral dev work26MIT
toondb-grpcToonDB gRPC services for cross-language clients (Thick Server / Thin Client architecture)25Apache-2.0
hematite-dbA small embeddable SQL database.25MIT
rvf-importImport tools for migrating data from JSON, CSV, and NumPy formats into RVF stores24MIT OR Apache-2.0
zetdbHigh-performance in-memory key-value store inspired by Redis, implemented in Rust24MIT
pulsedbA high-performance time-series database written in Rust24MIT
keradb-sdkRust SDK for KeraDB - a lightweight, embedded NoSQL document database with vector search24MIT
zvec-coreRust-native vector database engine — HNSW, IVF, DiskANN/Vamana, BM25 FTS, scalar filtering, FP16/INT8/INT4 quantization24Apache-2.0
mmdb-writerWrite MaxMind DB (.mmdb) files: build IP-to-data lookup databases that any MaxMind-compatible reader can consume.23MIT OR Apache-2.0
mergedb-typesCRDT data structures for mergeDB23MIT
tessera-graphEmbeddable graph database for Rust. No server, no schema, no infrastructure.23MIT
ternlang-engramTernary episodic memory — time-stamped, TritFloat-quantized autobiographical recall scored by relevance × recency × salience ×…23LicenseRef-Ternlang-Commercial
stromadb-coreStromaDB core engine: Fact model, type catalog, fold, and query. Internal crate published for the StromaDB binaries; no API…22Elastic-2.0
yggrBatteries-included Raft node runtime built on yggr-core: tokio driver, TCP transport, segmented on-disk log.21MIT
basemyaiLocal memory engine for AI agents: 4 memory layers, temporal RAG, per-agent isolation, mandatory encryption. Built on…21MIT
intentdbSchema-free, natural language storage engine21MIT
keteEncrypted keyed storage: per-key ChaCha20-Poly1305 over a manifestus vault, addressed and keyed by tohu device identity. The…21MIT OR Apache-2.0
nexus-gatewayS3-compatible object gateway and embedded Nexus console.21MIT
openmiteThe local, embeddable memory runtime for AI agents. Sub-microsecond KV + semantic search + fused retrieval in one call.21MIT OR Apache-2.0
chorus-clientQuorum write-ahead log for databases over GCS Rapid zonal buckets21Apache-2.0
symspell_complete_rapidtypo-tolerant autocomplete in Rust (based on symspell_complete_rs, replace gxhash with rapidhash)21MIT
merutableEmbeddable single-table engine: row + columnar Parquet with Iceberg-compatible metadata21Apache-2.0
stromadb-storeStromaDB directory-backed database: open, ingest, embed, query over the core engine. Internal crate published for the StromaDB…21Elastic-2.0
l5m-coreSecurity-gated memory/retrieval engine: authorization gates (tenant/policy/trust/temporal) run before relevance scoring.20MIT OR Apache-2.0
wal-backupEmbedded SQLite WAL replication to S3-compatible object storage. Not a sidecar — a library. Like Litestream, but embedded.20MIT OR Apache-2.0
wombatkv-cabiC ABI over WombatKV. Produces libwombatkv.dylib + wombatkv.h so C/C++ engines (ds4, llama.cpp, custom) integrate without a Rust…20Apache-2.0
metanoiaA planned adaptive OLAP query engine that can replan queries while they run.20Apache-2.0
shunyadbA correctness-first embedded storage engine written in Rust, built around WAL, immutable LSM pages, MVCC, and deterministic crash…19MIT
hungerdbhungerdb: A serverless, low-latency vector database for AI applications19Apache-2.0
dag-executorA production-ready DAG executor with state management and advanced patterns19MIT OR Apache-2.0
minkv一个轻量级持久化键值存储，支持内存和文件后端，提供 CLI 和 TCP 服务器19MIT
deltatA time-first scheduling database: availability, conflicts, capacity, holds, and buffers as collision detection on the Unix-time…19AGPL-3.0-or-later
embedmind-coreEmbedded memory engine for AI agents: single crash-safe file, vector + full-text + graph19MIT
vortex-rdf-coreModern and high-performance columnar RDF serialization format19MIT
better-duck-dieselRust DuckDB client with Diesel ORM support18MIT OR Apache-2.0
eeldenEelden — multi-tenant database engine (placeholder; real crate forthcoming)18MIT OR Apache-2.0
lockaA Rust-based database application.17MIT
graphtatuiTerminal-native graph explorer for arbitrary triple datasets17MIT OR Apache-2.0
taxopsisTyped predicate-retrieval extension over a metatheca vault: filtering and ordering by field values against a content-addressed…17MIT OR Apache-2.0
blockstore-cliA tool to import blocks from LevelDB into blockstore17non-standard
repoxtrait framework for data repository patterns16MIT
corellUn kernel d'inférence IA universel, asynchrone, agnostique et local-first (0 réseau) en Rust.16GPL-2.0-or-later
rocksgraphA Gremlin-inspired property graph query engine written in Rust, backed by RocksDB16GPL-2.0-or-later
pierreA single-binary log indexer in Rust: real full-text search, tiered storage, and pre-computed aggregations, built on the edgestore…16MIT
kintounDistributed key-value store in Rust. Early development — not yet usable. Built as a Rust learning project toward streams, queues,…16MIT OR Apache-2.0
ruvector-proof-gateProof-gated vector writes with Merkle-accumulating witness logs for RuVector. Tamper-evident write receipts for agent memory…16MIT OR Apache-2.0
raft-sledPersistence layer for Raft consensus — sled embedded store with RaftStorage trait.16MIT
eelden-langEelden Lang — query language front-end for Eelden (placeholder)16MIT OR Apache-2.0
eelden-storageEelden storage engine — versioned pages and pager (placeholder)16MIT OR Apache-2.0
eelden-walEelden write-ahead log (placeholder)16MIT OR Apache-2.0
eelden-execEelden query executor (placeholder)16MIT OR Apache-2.0
cratos_dbHigh-throughput embedded LSM storage engine with content-addressable dedup, MVCC snapshots, and online backup15Apache-2.0
flotteEmbeddable durable streams library15MIT
flottningEmbeddable durable streams library15MIT
ultima-vectorHNSW vector search built on UltimaDB15Apache-2.0
rs-crdtA production-grade Rust library implementing Conflict-Free Replicated Data Types (CRDTs), WAL persistence, gossip networking,…15MIT OR Apache-2.0
lease-queueEmbedded persistent priority queue with native lease/visibility-timeout semantics. Single-binary, no server, crash-safe by…14MIT OR Apache-2.0
grounded-envoyMessage/coordination server for AI coding agents using sqlitegraph pub/sub14GPL-3.0-only
mikanJapanese full-text search index format and BM25 query engine, shared by a native indexer and a wasm client (static files, no I/O)14MIT OR Apache-2.0
oxiephemeris-lodOxiEphemeris: SPARQL store and HTTP endpoint (oxieph-sparqld) for the astrological Linked Open Data layer14Apache-2.0
l5m-serverHTTP server for L5M security-gated memory: JWT/JWKS auth, scoped keys, per-tenant metering, WAL durability.13MIT OR Apache-2.0
sqlite-conduitLightweight rusqlite-backed SQLite persistence proxy for Tauri apps — pure physical channel with explicit transaction control and…13MIT
links-logs-vaultAn associative log vault with LiNo text and compact binary stores13Unlicense
seekstorm_client_rsRust Client for SeekStorm vector & lexical search server13Apache-2.0
prollydbUmbrella crate for the ProllyDB content-addressed versioned map ecosystem.11MIT OR Apache-2.0
kcode-audio-ingressDurable automatic audio transcription with restart recovery8MIT