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GBrain
Plug your own memory, tools, and skills into any AI
GBrain gives you a memory and a set of connected accounts that every AI can reach. Write a note in Claude Code and ChatGPT knows it. Connect Gmail once and Cursor can search it with no key in a config file. The memory is a folder of markdown files you can read, correct and take with you. Run it on your own inference or ours, in a workspace your whole team shares. $100 off the first month for a team workspace at https://gbrain.io/gratis/product-hunt
Hi Product Hunt, I'm Brad, one of the people building GBrain. I'll be in the comments all day if you have questions.
I switched my main AI tool three times last year, and each time I lost everything it knew about my work. I spent the first week with every new tool explaining my projects all over again.
GBrain keeps that memory outside any one AI. ChatGPT, Claude, Claude Code and Cursor all read and write the same notes, so something you save from the terminal is there when you ask in the browser. The notes are plain text files. You can open them, fix what's wrong, or copy them out and leave.
It also holds your accounts. Connect Gmail and your calendar once, and every AI you use gets the same tools. The AI never sees your passwords or keys.Tools is one of my personal favorite parts of GBrain because I'm on the more paranoid side of data sharing and wanted a way to see how AI was using my data, which is why we have the activity log.
It doesn't work with the ChatGPT or Claude subscription you already pay for yet. You bring an API key or use the usage that's included. That's the next thing I want to fix.
I'd rather talk than write a longer post. Ask me why you'd want this, whether it fits how you work, or how it's different from the memory ChatGPT and Claude already have. And if you've switched AI tools before, tell me what you lost.
That's what we're building from.
For Product Hunt, the first month is $99 instead of $199, with $100 of AI usage included, through September 30: gbrain.io/gratis/product-hunt. If you need help getting setup you can email [email protected] and you'll get myself or one of my cofounders.
About GBrain on Product Hunt
“Plug your own memory, tools, and skills into any AI”
GBrain launched on Product Hunt on September 23rd, 2026 and earned 0 upvotes and 3 comments, placing #113 on the daily leaderboard. GBrain gives you a memory and a set of connected accounts that every AI can reach. Write a note in Claude Code and ChatGPT knows it. Connect Gmail once and Cursor can search it with no key in a config file. The memory is a folder of markdown files you can read, correct and take with you. Run it on your own inference or ours, in a workspace your whole team shares. $100 off the first month for a team workspace at https://gbrain.io/gratis/product-hunt
On the analytics side, GBrain competes within Productivity, Artificial Intelligence and Business — topics that collectively have 1.1M followers on Product Hunt. The dashboard above tracks how GBrain performed against the three products that launched closest to it on the same day.
Who hunted GBrain?
GBrain was hunted by Brad Gessler. 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 GBrain including community comment highlights and product details, visit the product overview.
Brad Gessler
Hi Product Hunt, I'm Brad, one of the people building GBrain. I'll be in the comments all day if you have questions.
I switched my main AI tool three times last year, and each time I lost everything it knew about my work. I spent the first week with every new tool explaining my projects all over again.
GBrain keeps that memory outside any one AI. ChatGPT, Claude, Claude Code and Cursor all read and write the same notes, so something you save from the terminal is there when you ask in the browser. The notes are plain text files. You can open them, fix what's wrong, or copy them out and leave.
It also holds your accounts. Connect Gmail and your calendar once, and every AI you use gets the same tools. The AI never sees your passwords or keys. Tools is one of my personal favorite parts of GBrain because I'm on the more paranoid side of data sharing and wanted a way to see how AI was using my data, which is why we have the activity log.
We use it as a team. Everyone works in the same thread with one assistant, so nobody has to catch it up on a project someone else already explained. We have a daily sync hooked up to Github, Gmail, Stripe, and Mercury that tells us what's up once per day over email.
You can pick which model it runs on and change it later without losing anything. It comes with ready-made jobs, like a brief on everyone you're meeting tomorrow, and you can put them on a schedule.
It doesn't work with the ChatGPT or Claude subscription you already pay for yet. You bring an API key or use the usage that's included. That's the next thing I want to fix.
I'd rather talk than write a longer post. Ask me why you'd want this, whether it fits how you work, or how it's different from the memory ChatGPT and Claude already have. And if you've switched AI tools before, tell me what you lost.
That's what we're building from.
For Product Hunt, the first month is $99 instead of $199, with $100 of AI usage included, through September 30: gbrain.io/gratis/product-hunt. If you need help getting setup you can email [email protected] and you'll get myself or one of my cofounders.