AgentIndex icon
AgentIndex
hippocampus logo
hippocampus
★ 13
vs
Ombre-Brain logo
Ombre-Brain
★ 156

hippocampus vs Ombre-Brain

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.; Ombre-Brain: Ombre Brain is a long-term emotional memory system for Claude. It tags memories using Russell's valence/arousal coordinates, stores them as Obsidian-compatible Markdown, connects via MCP, and implements a forgetting curve. It features natural decay and active surfacing of unresolved memories.

01

TL;DR

hippocampus logo
hippocampusMemory & Context · ★ 13

Store and recall personal preferences across different AI assistants

Read hippocampus full review →
Ombre-Brain logo
Ombre-BrainMemory & Context · ★ 156

Persistent cross-conversation memory for Claude

Read Ombre-Brain full review →
02

Side-by-Side Comparison

Field
hippocampus logohippocampus
Ombre-Brain logoOmbre-Brain
Category
Memory & Context
Memory & Context
Stars
★ 13
★ 156
License
AGPL-3.0
MIT
Install Command
git clone https://github.com/karrolcia/hippocampus.git && cd hippocampus && npm install && cp .env.example .env && npm run dev
git clone https://github.com/P0lar1zzZ/Ombre-Brain.git && cd Ombre-Brain && python -m venv .venv && source .venv/bin/activate && pip install -r requirements.txt
Updated
1d ago
6mo ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
ai, chatgpt, claude
ai-agent, chatgpt, claude
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
Ombre-Brain logoOmbre-Brain
01Emotional tagging using valence and arousal dimensions
02Natural forgetting with modified Ebbinghaus curve
03Weight pool surfacing of unresolved memories
04Obsidian-native Markdown storage with YAML frontmatter
05API degradation to local keyword analysis when unavailable
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
Ombre-Brain logoOmbre-Brain
↳Persistent cross-conversation memory for Claude
↳Tracking emotional patterns and unresolved topics over time
↳Diary-style archival of daily conversations
FAQ

FAQ

What is the difference between hippocampus and Ombre-Brain?
Both hippocampus and Ombre-Brain are in the Memory & Context category. hippocampus has 13 stars, while Ombre-Brain has 156 stars.
Which is better, hippocampus or Ombre-Brain?
The best choice depends on your use case. Choose hippocampus if Store and recall personal preferences across different AI assistants, and Ombre-Brain if Persistent cross-conversation memory for Claude.
Is hippocampus free or open source?
Yes, hippocampus is open source on GitHub (AGPL-3.0).
Is Ombre-Brain free or open source?
Yes, Ombre-Brain is open source on GitHub (MIT).
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Related

Alternatives to hippocampus →Alternatives to Ombre-Brain →hippocampus details →Ombre-Brain details →