Product

Second Brain.

The memory for AI. Your knowledge, decisions and experience accumulate in a single memory; ask, and it remembers with the reasoning. MCP-capable AI tools connect to the same memory — even when the model changes, the memory stays with you. You decide where it lives.

den Chat screen: a reasoned answer from memory, with source cards below showing the emails, meetings and documents it came from
The same in both editions
den Chat screen: a conflict warning against a past decision at the top, below it an answer on what changed in the new CLT offer, with source cards

Chat

Ask, and your memory answers.

Under every answer, source cards show which email, which document and which decision the information came from.

den Graph screen: an automatically extracted network of people, organizations, projects and decisions, with node types and a period slider on the left

Graph

You didn't draw this network.

The links between people, organizations, projects and decisions are extracted from your archive automatically.

den Decision Log screen: a decision with its context, rationale, options, discarded alternatives, outcome and sources

Decision Log

The reasoning stays, not just the decision.

Context, options, what was ruled out and the outcome in one place; it warns you when a new decision contradicts the past.

den Output Panel: a bid comparison table generated from memory next to the chat, every row linked to its source

Output Panel

Tables, pages and documents from your memory.

It produces the output you ask for, grounded in your memory; download it or save it back into memory.

Two Memories

The organization's memory, the executive's memory.

01

The Organization's Memory

With an On-Site installation, contracts, emails, documents, projects... Your organization's experience becomes a connected memory network. 'What happened with this supplier before?' no longer depends on anyone's recollection.

02

The Executive's Memory

Your decisions, your reasoning, the paths you didn't take. den learns your decision history; ask 'what did I think about this last year?' and it answers with date, context and rationale. It even tells you when you contradict yourself.

01 — On-Site — organizations and decision-makers

den Second Brain · On-Site

Your memory never leaves your building.

It runs on your own infrastructure. It can run fully air-gapped on open-source models; agent access is written to a tamper-evident audit trail. Role-based access is on the roadmap.

  • On-premise
  • KVKK-ready architecture
  • Open-source model support
  • Agent audit trail
  • Role-based access (roadmap)
02 — Portable — individuals

den Second Brain · Portable

Your memory with you, locked to you.

Your second brain goes into an end-to-end encrypted package, is stored in the cloud and restored on any device you choose. Its integrity is on record — no one but you can open the package, not even den.

01

Encrypted package

Your memory never leaves your device unencrypted. Only you hold the key.

02

On every device

Use your recovery phrase to restore your memory, exactly as it was, on another computer.

03

Integrity record

Your package's integrity and version history are on record; you can verify at any time that your memory hasn't changed.

  • End-to-end encrypted
  • Device-independent
  • Integrity record
Comparison

Which edition?

On-SitePortable
Who it's forOrganizations and decision-makersIndividuals
Where the memory livesOn your own infrastructureIn an encrypted package, in the cloud
AccessInternal (role-based access on the roadmap)Only you (you hold the key)
SetupInstallation and handoverOne click from the app
PricingBy quoteMonthly subscription (coming soon)

Both are the same product; moving your memory between editions is coming soon.

Let's talk about which edition fits you.

ContactDigital & AI Transformation