AgentIndex icon
AgentIndex
hippocampus logo
hippocampus
★ 13
vs
neurostack logo
neurostack
★ 47

hippocampus vs neurostack

hippocampus: Hippocampus is an open-source, self-hosted MCP memory server that provides persistent, cross-platform memory for AI assistants. Deploy once and connect to multiple AI platforms such as Claude, ChatGPT, Gemini, Cursor, and Perplexity, enabling them to share and recall context seamlessly. It uses a knowledge graph with local embeddings and encrypts the database at rest.; neurostack: NeuroStack is a self-hosted MCP server and CLI that indexes Markdown vaults by meaning, providing AI agents with persistent memory across sessions. It detects stale notes, supports semantic and keyword search, and uses tiered retrieval to minimize token usage. Fully local, it never modifies your files.

01

TL;DR

hippocampus logo
hippocampusMemory & Context · ★ 13

Store and recall personal preferences across different AI assistants

Read hippocampus full review →
neurostack logo
neurostackMemory & Context · ★ 47

Give Claude Code or other AI assistants persistent memory across sessions

Read neurostack full review →
02

Side-by-Side Comparison

Field
hippocampus logohippocampus
neurostack logoneurostack
Category
Memory & Context
Memory & Context
Stars
★ 13
★ 47
License
AGPL-3.0
Apache-2.0
Install Command
git clone https://github.com/karrolcia/hippocampus.git && cd hippocampus && npm install && cp .env.example .env && npm run dev
npm install -g neurostack && neurostack install && neurostack init
Updated
1d ago
1d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
ai, chatgpt, claude
ai-memory, knowledge-graph, local-ai
03

Features

hippocampus logohippocampus
01Cross-platform memory sharing across major AI tools via MCP protocol
02Knowledge graph storage with entities, observations, and relationships
03Semantic search using local embeddings (all-MiniLM-L6-v2)
04AES-256 database encryption via SQLCipher, including embedding vectors
05Self-contained OAuth 2.1 authentication with PKCE
neurostack logoneurostack
01Hybrid semantic + keyword search across your Markdown vault
02Stale note detection to prevent AI from citing outdated information
03Agent write-back memory that persists across sessions
04Token-efficient tiered retrieval (triples → summaries → full content)
05Fully local, never modifies vault files
04

Use Cases

hippocampus logohippocampus
↳Store and recall personal preferences across different AI assistants
↳Maintain project context and decisions when switching between AI tools
↳Avoid repeating information when using multiple AI platforms simultaneously
neurostack logoneurostack
↳Give Claude Code or other AI assistants persistent memory across sessions
↳Search your personal knowledge base by meaning, not just keywords
↳Extract decisions, bugs, and learnings from session transcripts automatically
FAQ

FAQ

What is the difference between hippocampus and neurostack?
Both hippocampus and neurostack are in the Memory & Context category. hippocampus has 13 stars, while neurostack has 47 stars.
Which is better, hippocampus or neurostack?
The best choice depends on your use case. Choose hippocampus if Store and recall personal preferences across different AI assistants, and neurostack if Give Claude Code or other AI assistants persistent memory across sessions.
Is hippocampus free or open source?
Yes, hippocampus is open source on GitHub (AGPL-3.0).
Is neurostack free or open source?
Yes, neurostack is open source on GitHub (Apache-2.0).
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