Open-Source Core · 1,800+ GitHub Stars

Your AI Remembers
Everything.

Your AI finds what you forgot.

Save any tab, sync your entire Google account, get Eureka Reports that discover hidden projects and score business opportunities — all searchable from your browser, WhatsApp, or Telegram.

1,843
Items Indexed
9
Data Sources
5
Projects Found
S
Top Opp. Grade

Everything Your Brain Needs

Built on open-source foundations. Leveraging Khoj for RAG, D3.js for visualization, changedetection.io patterns for monitoring — then adding what nobody else has.

Save All Tabs

One click saves every open tab. AI extracts, summarizes, and indexes the content. Restore any session later.

Google Brain Sync

Connect Google and sync Drive, Docs, Sheets, Gmail, Calendar, YouTube, Keep, Contacts, and Tasks.

Eureka Reports

AI analyzes your entire knowledge base and generates insight reports with discovered projects and ideas.

Opportunity Scoring

The custom moat — scores projects on research depth, recency, revenue signals, execution readiness, and market validation.

Knowledge Graph

Auto-extracts entities (people, companies, topics, ideas) and maps relationships. Interactive D3.js visualization.

Smart Watchers

Autonomous topic monitoring. Tracks competitors, trends, and opportunities. Sends relevant finds via Telegram.

Semantic Search

Hybrid search combining vector similarity + full-text. Finds what you need even with vague queries.

Messenger Bots

Search your brain from WhatsApp or Telegram. Forward links to save. Voice notes auto-transcribed.

Brain Sharing

Share curated brain slices with teammates. Password-protected, expiring links. Export as MD/PDF.

How ContextOS Works

From chaos to clarity in 3 steps

01

Capture Everything

Browser extension saves tabs. Google sync imports your digital life. Forward links via WhatsApp. Upload PDFs. Every source enters through one universal gateway.

02

AI Processes & Connects

Content is extracted, chunked, and embedded. Entities are recognized. Relationships are mapped. Projects are auto-discovered. The Opportunity Engine scores everything.

03

Recall & Act

Semantic search finds anything instantly. Eureka Reports surface hidden insights. Watchers monitor the web autonomously. Generate reports, briefs, and comparisons from memory.

The Opportunity Engine

No other tool scores your projects on business potential using signals from your own data. This is the custom moat.

Research Depth 25%

Items, words, docs, videos invested

Recency 20%

Recent activity vs. dormancy

Revenue Signals 20%

Pricing, customers, competition mentions

Execution Readiness 15%

Plans, code, partners, domains

Source Diversity 10%

Research across multiple channels

Market Validation 10%

Watcher findings, trending data

S
High Potential — Ready to Execute
ContextOS — AI Second Brain Platform
Research
92%
Recency
100%
Revenue
100%
Execution
100%
Diversity
100%
Market
80%
Deep research investment
Strong revenue signals
Execution steps already taken

Built on Open Source Giants

We don't reinvent wheels. We leverage the best open-source tools and build only what doesn't exist yet.

FastAPI
Hono
pgvector
Celery
spaCy
GLiNER
Crawl4AI
D3.js
WXT
Telegraf
Baileys
Readability.js
Sentence-Transformers
LlamaIndex
changedetection
Supabase
Stripe
Redis

Simple Pricing

Free forever for personal use. Scale when you're ready.

Free
$0 /mo
100 items/mo
  • Browser extension
  • 5 sessions
  • Basic search
  • Community support
Start Free
Pro
$9 /mo
Unlimited
  • Everything in Free
  • Google Brain sync
  • Eureka Reports
  • 3 Watchers
  • Telegram bot
Upgrade to Pro
Most Popular
Strategist
$29 /mo
Unlimited
  • Everything in Pro
  • Opportunity Scoring
  • 10 Watchers
  • Action engine
  • Priority support
Go Strategist
Operator
$79 /mo
Unlimited
  • Everything in Strategist
  • Unlimited Watchers
  • Team brain
  • WhatsApp bot
  • Custom integrations
  • API access
Go Operator

Stop Losing What You've Learned

Your AI brain is waiting. Connect everything, search anything, discover what you forgot.

Launch Your Brain