Tusab — Index. Learn. Consult.

DOWNLOAD FOR WINDOWS

SEE HOW IT WORKS

The knowledge you choose and that speaks to you.

INDEX · ASCEND · CONVERSE

Paste a YouTube channel URL or add PDFs, Word, spreadsheets, audios, and images. Indexed locally in seconds.

BM25 engine retrieves the most relevant excerpts. No hallucination: only answers with what you indexed.

Natural language chat with streaming. Every response cites the exact source: video, document, timestamp.

What you get with Tusab:

Alive and active memory

Everything you watch, read, or note — indexed, searchable, yours forever.

Your knowledge, your rules

Local, private, serverless. No one has access to what is yours.

AI with the voice of whoever you choose

AI that speaks with the "voice" of the one you chose to listen to.

Real access to technology

Works with free offline models on your computer. No mandatory subscription.

Features

Youtube

Extract and store transcripts from entire Youtube channels.

Images

Described by AI via multimodal Ollama or extracted with OCR.

Chat with Citation

Real-time streaming with verifiable citation of the exact source.

Documentos

PDFs, DOCX, XLSX, CSV, Markdown, pasted text.

Áudios

Transcribed locally with faster-whisper, without internet.

Multilingual + Backup

PT, EN, ES • Optional Google Drive backup.

Exported WhatsApp conversations and transcripts from Otter, Zoom, and Teams go straight into the base.

WhatsApp & Meetings

Extraction Queue

Add multiple channels and the engine processes them one by one, automatically.

Multiple AI Providers

Ollama (free, offline), Gemini, OpenAI, Anthropic, and Groq — you choose.

Personas and Tone

Objective, technical, didactic, Socratic — or create your own persona.

Scope Control

Pin specific sources per conversation with @mention. You decide what the AI can see.

❇️ With Ollama, TUSAB runs without internet, without an account, at no cost.

Your data doesn't leave your machine.

a room filled with lots of laptop computers

🔏Local-first

Everything processed on your PC.

🎲 No central server

Data on our systems only.

🛜 Works offline

Extraction and chat without internet.

LGPD Compliance (Law 13.709/2018)

Who TUSAB is for

🎓 Students and researchers

Transform courses, classes, lectures, and articles into your personal study base. Ask, review, and connect content — without relying on memory or notebooks.

a person standing in a library with shelves full of books

🎙️ Content creators

Index your own channel and everything you have already produced. Consult old ideas, find specific excerpts, and rebuild on top of what already exists.

💼 Professionals and consultants

Transform recorded meetings, internal documents, and confidential client materials into a searchable base. Less time searching, more time delivering.

🏢 Teams, companies, and institutions

Private and local knowledge base — without exposing documents to external APIs. Ideal for hospitals that cross-reference sensitive data, legal teams with confidential contracts, or companies with internal collections.

Ready to have your private specialist?

Free. Local. Yours.

Download Here

Windows 10/11 • Requires ~500 MB • Optional Ollama for 100% local mode

Contacts:

Augusto Alves Brasil
tusab@tusab.sollution