The Intersection of Private Notes and Global Knowledge

SynapseKeep is a self-hosted personal knowledge base designed to bridge the gap between static note-taking and active web research. While tools like NotebookLM are excellent for research and Obsidian is a leader in note organization, SynapseKeep combines these worlds into a single, private ecosystem. By utilizing a local-first approach, your data remains in your control without the need for external file-syncing services.

Core Intelligence Features

• Semantic Search: Go beyond keyword matching. Using context-aware embeddings, the system understands the difference between diverse meanings of the same word to provide high-accuracy search results.

• Local AI Insights: Powered by Ollama, the system generates concise summaries of your notes and builds strong search prompts locally to maintain your privacy.

• Augmented Research (RAG): Retrieve relevant information from your own notes and the web simultaneously. The system uses Retrieval-Augmented Generation to turn your existing content into a context layer for deeper AI assistance.

• Integrated Site Scraping: Using Firecrawl, you can capture web references and convert them into structured summaries to bolster your internal knowledge base.

The Tech Stack

Built by a developer for the homelab community, the system is optimized for performance on consumer-grade hardware:

• Backend: Built with .NET 10 and Aspire, providing a robust microservice-driven architecture.

• Database: Leverages the native vector support of SQL Server 2025 for efficient semantic data handling.

• Privacy-First Search: Aggregates global search results via a self-hosted SearXNG instance.