Apache Arrow columnar in-memory format

MCP Local Memory Service for coding copilot agents

A set of efficient utilities that extend the use of JSON (streaming, estimate size, NDJSON/JSONL, etc.)

Deterministic, persistent 3D/2D spatial world model for AI agents with entity tracking, object permanence, movement simulation, and expected view frustum projection.

Memory for AI agents that forgets like a human — decaying traces, inverse search, and prospective loops that resurface on a cue

Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.

A simple in-memory filesystem. Holds data in a javascript object.

Memory New - A new memory extension for OpenClaw

memlab is a framework that analyzes memory and finds memory leaks in JavaScript applications.

Project-local RAG memory MCP server — knowledge graph + multilingual vector + FTS5 in a single SQLite file. Per-project isolation, 38 MCP tools, codepoint-safe chunking (Korean/CJK/emoji).

JavaScript Performance Monitor

argon2-rust binding for Node.js

PLUR MCP server — persistent memory tools for any AI agent

A micro-library of stream components for building custom JSON and JSONC processing pipelines with a minimal memory footprint — parse, filter, and transform JSON far larger than available memory with a SAX-inspired token API, on Node.js or Web Streams.

Tiny but powerful full-text search engine for browser and Node

Famous sorting algorithms based on vote popularity and time

In-memory state adapter for Chat SDK — zero-dependency subscriptions, locks, and cache for local development and tests

Node.js atomic and non-atomic counters, rate limiting tools, protection from DoS and brute-force attacks at scale

Knowledge layer for AI agents - CLI, MCP server, and data layer

A WebGL memory tracker