Privacy-First · Offline-Ready · AI-Powered

Your AI‑Powered
Second Brain

Personal Intelligence OS is a browser-based productivity and knowledge management system that keeps your data private, works offline, and supercharges your workflow with AI.

100%
Client-Side
0
Data Sent to Servers
Offline
First Design

Features

Everything you need in one place

A comprehensive suite of tools to capture, organize, and leverage your knowledge — all running privately in your browser.

Local-First Storage

All data lives in IndexedDB on your device. Lightning-fast access, zero server dependency, and complete offline support.

AI-Powered Assistant

Smart summarization, research analysis, task prioritization, and personalized recommendations powered by cloud and local AI models.

Knowledge Management

Markdown editor with bidirectional links, tagging, knowledge graph visualization, and semantic search across all your notes.

Project & Task Management

Kanban boards, Gantt charts, deadline tracking, and progress monitoring to keep every project on track.

Encrypted Cloud Sync

Optional Google Drive backup with end-to-end encryption. Your data stays encrypted — even Google can't read it.

Offline & PWA

Install as a native-like app on any device. Works fully offline with service workers and background sync.

Version Control

Data snapshots, undo/redo history, change tracking, and rollback support for all your content.

Analytics & Insights

Study time analysis, focus tracking, performance reports, and weekly AI-generated productivity insights.

Plugin System

Extend PIO with custom AI plugins, workflow automation, API integrations, and scriptable extensions.

How It Works

From chaos to clarity

Four simple steps to transform your workflow.

Step 01

Capture Everything

Notes, tasks, research, documents — throw anything into PIO. The Markdown editor and flexible data model handle it all.

Step 02

AI Organizes & Connects

Vector embeddings create semantic links between your content. The AI surfaces connections you'd never find manually.

Step 03

Visualize Your Knowledge

Explore your ideas through interactive knowledge graphs, smart search, and auto-generated summaries.

Step 04

Execute Smarter

AI-powered task prioritization, focus tracking, and weekly insights help you work on what matters most.

Tech Stack

Built with modern technologies

Frontend

React.jsTailwind CSSTypeScript

Storage

IndexedDBDexie.jsCache API

AI & ML

Cloud LLMsTensorFlow.jsWebGPU

Security

Web Crypto APIAES EncryptionZero-Knowledge

Offline

Service WorkersPWABackground Sync

Cloud

Google Drive APIOAuth 2.0Vercel

Security & Privacy

Your data never leaves your device

PIO is built on a zero-trust architecture. All data is stored and encrypted locally. Cloud backups use client-side AES encryption — not even we can read your files.

  • Client-side AES-256 encryption for all data
  • No central server — your browser is the database
  • Optional encrypted backup to your own Google Drive
  • User-controlled encryption keys — zero-knowledge design

Built For

Who is PIO for?

🎓

Students

Organize lecture notes, manage assignments, and get AI-powered study summaries.

🔬

Researchers

Build interconnected knowledge bases, discover hidden connections, and automate literature reviews.

💻

Developers

Manage project documentation, track tasks across repos, and leverage AI for code-related notes.

Ready to build your second brain?

Start organizing your knowledge, boosting productivity, and keeping your data private — all from your browser.