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Second Brain by Hexact
Your local AI knowledge base
Second Brain is a local desktop app that gives Claude Desktop persistent memory through MCP. It creates a personal database on your machine where you store contacts, customers, meeting notes, ideas, business data and scraped data. Then Claude reads and writes to it, with your permission, through normal conversation. Ask Claude about a customer and it pulls the answer from your records. Log a meeting and it saves the notes to your database. Look up an article, a competitor, a decision.
About Second Brain by Hexact on Product Hunt
“Your local AI knowledge base”
Second Brain by Hexact was submitted on Product Hunt and earned 9 upvotes and 1 comments, placing #66 on the daily leaderboard. Second Brain is a local desktop app that gives Claude Desktop persistent memory through MCP. It creates a personal database on your machine where you store contacts, customers, meeting notes, ideas, business data and scraped data. Then Claude reads and writes to it, with your permission, through normal conversation. Ask Claude about a customer and it pulls the answer from your records. Log a meeting and it saves the notes to your database. Look up an article, a competitor, a decision.
On the analytics side, Second Brain by Hexact competes within Artificial Intelligence — topics that collectively have 467.3k followers on Product Hunt. The dashboard above tracks how Second Brain by Hexact performed against the three products that launched closest to it on the same day.
Who hunted Second Brain by Hexact?
Second Brain by Hexact was hunted by Stepan Aslanyan. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Second Brain by Hexact including community comment highlights and product details, visit the product overview.
Hey Product Hunters 👋
We built Second Brain because I was tired of re-explaining my business to AI every single conversation.
I run three companies. Every time I opened Claude, I had to paste context about which company I was asking about, re-introduce my contacts, re-explain decisions we already made. It felt like talking to someone with amnesia.
So I built a local app that connects Claude Desktop to a personal database via MCP. Now when I ask "who are our top 5 paying customers?" or "what did we decide about pricing last quarter?", Claude answers from my actual data. Not from the internet. From my records.
Here's what it does:
→ Personal CRM — contacts, companies, relationships, all searchable through conversation
→ Meeting notes and ideas — log them by talking to Claude, search them later
→ Knowledge base — articles, research, competitor data, connected and queryable
→ Permission-first — Claude only writes when you explicitly say so
→ 100% local — database on your machine, no cloud.
One thing that keeps coming back to me: AI closed the knowledge gap. Everyone has access to the same AI now. The difference between you and the next person is the data you control. Your contacts, your decisions, your context, your files. That's the only edge left. Second Brain is where that edge lives.
We've been using it internally for months. Now it's available to everyone.
Try it free for 7 days — no credit card needed.
I'll be here all day answering questions. What would you store in your second brain?