AI forgets. You don't have to.

The unified desktop workspace for all your AI tools.

ChatGPT
Claude
Gemini
Perplexity

Captures every conversation, file, and code snippet.
Instantly searchable. Forever permanent.

Desktop app for Mac, Windows, Linux Works with or without API keys Everything stays on your device
Built for Power Users of AI
Trusted by privacy-conscious engineers

Your AI insights are intellectual assets.

Stop treating your brilliance like trash.

The Scattered Silos

You're jumping between GPT, Claude, and Perplexity. One solved it yesterday—but you don't know which one.

Digital Amnesia

Every closed tab is memory lost. You bleed minutes every day searching for answers you already earned.

Disposable Tabs

The perfect code snippet. The breakthrough architecture. Gone the moment you close the browser.

Disconnected Workflows

Three ways to connect. You choose.

Thought42 is a desktop-first memory system. Decide how it integrates.

Browser Extension

Use AI exactly as you do today. No API keys required.

  • Works with free & paid accounts
  • Zero configuration
  • Auto-syncs to desktop

Bring Your API Keys

Run models directly inside Thought42. No browser needed.

  • Unified command center
  • Faster responses
  • Full recall of prompts

One workspace. Complete memory.

Automatic Capture

Thought42 records your entire AI workflow. Prompts, responses, files, code blocks—synced to your desktop instantly. No screenshots ever.

Unified Hybrid Search

Find concepts, not just keywords. Search "validate JSON" and find "parse dict safely". "Which model?" becomes irrelevant.

Organized by Context

Clusters work into Roles → Topics → Tasks. Debugging code? Writing research? Everything stays grouped by context, not date.

Cross-Model Memory

Claude doesn't know what GPT told you yesterday. Thought42 does. Connect contexts across models seamlessly.

The Transformation

Before Thought42
  • Scattered across 5+ browser tabs
  • "Where did I put that code?"
  • Lost context between models
  • Re-uploading files constantly
After Thought42
  • One unified desktop workspace
  • Search once, find instantly
  • Continuous memory across models
  • Upload once, use forever

Your data. Your device. Period.

Local-first, privacy-absolutist architecture. Everything stays on your machine. We don't see it. We don't store it.

Local Vector DB
Zero Server Storage
Complete Ownership

Founding Lifetime Access

One-time payment. No subscriptions. Lifetime ownership.

Limited Early Adopter Offer
$99
$39
One-time payment
  • Unlimited conversations & history
  • Unlimited templates
  • Unlimited Knowledge Files (Local RAG)
  • All 3 Connection Modes
  • Founding User Badge
Get Lifetime Access

30-day money-back guarantee

Coming Soon — Thought42 Plugin Store

Extend Thought42. Build plugins. Earn money.

Soon you'll be able to create and publish plugins that:

Automate workflows

Add domain-specific intelligence

Extend Thought42's capabilities

Serve thousands of power AI users

Build once. Earn continuously.