#data-structures

A high-performance, asynchronous toolkit for building MCP servers and clients in Rust.

Arena based tree 🌲 structure by using indices instead of reference counted pointers

Boolean-valued predicate functions in Rust

The explainable, local-first memory engine for AI agents. One ~9 MB binary fuses vector + graph + columnar under VelesQL; why() returns the evidence path behind every recall. No cloud, no glue code — runs on server, browser, mobile and desktop.

Rust cache structures and easy function memoization

Link-time initialization, destruction, scattered data collection macros for Rust

framework for composable networking services

Utilities for working with bytes

PNA (Portable Network Archive) is a highly scalable archive format that can be compressed, encrypted, and split. Also, its data structure is inspired by the PNG data structure.

Julia implementation of Data structures

A better compressed bitset in Rust

Comprehensive mocking framework for REST, gRPC, GraphQL & WebSockets. Features intelligent RAG-driven data synthesis, latency/fault injection, HTTP bridge, WASM plugins, E2E encryption, workspace sync, and modern admin UI. Production-ready with Docker support.

🐎 A fast implementation of the Aho-Corasick algorithm using the compact double-array data structure in Rust.

🗻 Log-structured, embeddable key-value storage engine written in Rust

Track and query Cargo dependency graphs.

The bidirectional mapping library for Python.

🔩 Like builtins, but boltons. 250+ constructs, recipes, and snippets which extend (and rely on nothing but) the Python standard library. Nothing like Michael Bolton.

Maps where keys are borrowed from values.

Compile time static maps for Rust

A low-level, versioned, embedded, ACID-compliant, key-value database for Rust

PurRDF — one RDF 1.2 engine, one behavior, every language: interned primitives, Turtle/TriG/N-Quads/RDF-XML/JSON-LD codecs, RDFC-1.0, SPARQL 1.1/1.2, SHACL Core, GTS graph transport, and Python/WebAssembly/C bindings.

Open standard for mathematical programming interoperability

Embeddable spreadsheet engine - parse, evaluate & mutate Excel workbooks from Rust, Python, or the browser. Arrow-powered, 400+ functions.

Written by humans. WTX is a collection of different transport implementations and related tools focused primarily on web technologies.

Scriptable local traffic workbench for inspecting, intercepting, replaying, and rewriting HTTP/HTTPS and WebSocket traffic.

Near-lock-free structured logging for Rust. 10-crate workspace: MCP server (Claude/Cursor/mcp.run), OTLP HTTP+gRPC exporter, Tower middleware, WASM + WASI 0.2 component, eBPF-style enrichers, PII redaction, log analytics, test utilities, and a jq-style CLI. Sub-µs ingest via a 65k-slot ring buffer (LMAX Disruptor).

Canonical type definitions for EIP-155 chains

K.I.S.S. LSM-tree implementation in safe Rust

Rust newtype with guarantees 🇺🇦 🦀

A high-performance, thread-safe limit order book implementation written in Rust. This project provides a comprehensive order matching engine designed for low-latency trading systems, with a focus on concurrent access patterns and lock-free data structures.