GitHub Repos intermediate 3 min read May 6, 2026
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Reasearch got an upgrade: Local Deep Research

“It searches arXiv, PubMed, and your own PDFs simultaneously, encrypts every result with AES-256 per user, and compounds your knowledge across sessions — the whole stack runs on your machine with one Docker Compose command.”

Reasearch got an upgrade: Local Deep Research
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Source · github.com

“none of the other tools come ready to use, they often are very complicated, requiring extensive setup or even coding to achieve success... LDR is the best one I have tried. It is straight to the point, well made and relatively easy to jump right in and try it out. — AncientMysti...”

You know that feeling when you need to research a complex technical or academic topic and have to choose between paying $200/month for OpenAI's Deep Research or using a free tool that logs every query to a cloud server? Academic research often involves queries about sensitive topics — competitor strategies, proprietary drug targets, confidential legal questions — that cannot go through a third-party service. Building your own pipeline means wiring search APIs, LLM calls, citation extraction, and report formatting into something maintainable. The result is a month of engineering for something you wanted running last week.

aiopen-sourcepythonllmresearchself-hostedprivacy

You ask a question; LDR breaks it into sub-questions and fires searches across whichever engines you have configured — arXiv for academic papers, PubMed for biology, SearXNG for general web, or your own PDF collection via FAISS vector search. Think of it like a librarian who simultaneously queries 25 databases, reads the relevant pages, and writes you a sourced summary. An LLM (local via Ollama or cloud via OpenAI/Anthropic) synthesizes the results into a structured report with inline citations. Optionally, LDR downloads the source PDFs, extracts their text, and adds them to a FAISS vector index — so your next research query searches both the live web and everything you have accumulated.

01
25 configurable search engines — you connect arXiv, PubMed, Semantic Scholar, SearXNG, Tavily, Brave, GitHub, or any LangChain-compatible vector store without modifying core code, by inheriting from BaseSearchEngine
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Per-user AES-256 SQLCipher encryption — each user gets an isolated database with their own encryption key; zero-knowledge architecture means no admin can read your data and there is no password recovery
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Compounding knowledge base — research sessions optionally download and FAISS-index source PDFs so future queries search your accumulated library alongside the live web, compounding over time
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9 LLM provider adapters — Ollama, LM Studio, llama.cpp, OpenAI, Anthropic, Google Gemini, OpenRouter, DeepSeek, Mistral; switch providers in Settings without touching your pipeline
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MCP server for Claude integration — Claude Desktop and Claude Code can invoke quick_research, detailed_research, generate_report, and analyze_documents directly via the Model Context Protocol
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Zero telemetry — the README states 'the only network calls LDR makes are ones YOU initiate'; no analytics SDK, no crash reporting, no external scripts
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Built-in CLI benchmarking — run python -m local_deep_research.benchmarks --dataset simpleqa --examples 50 to test your own model and search engine combinations against SimpleQA
Who it’s for

If you are a researcher, data scientist, journalist, or developer who regularly needs multi-source academic synthesis and cannot send those queries to OpenAI or Perplexity, LDR is built for you. It also fits if you want to build a private knowledge base that compounds across research sessions rather than starting fresh each time. It is not ready for you if you need near-instant results (research runs take 1-30 minutes), if your team expects REST API documentation (the OpenAPI spec is a roadmap item), or if you need to run more than 25 simultaneous users on bare-metal Linux without bumping the...

Worth exploring

Yes, if you need self-hosted academic research with verifiable data residency: LDR is the only tool in this space that bundles a web UI, AES-256 per-user encryption, compounding FAISS knowledge base, and 25 search engine plugins in a single Docker Compose command. Set expectations correctly — the 95% accuracy claim requires a cloud LLM; local-only accuracy is lower and varies by model size. The 240 open issues and the pending async migration mean you should pin to a stable release tag and run it in Docker rather than bare metal before committing it to a team workflow.

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