Memdex

The idea of memory is extremely helpful. I use many AIs, yet heavy on Claude. instead of copying and pasting prompts or ask it to summarize it then paste it in a different AI, phew!!! this alone is brilliant "you open a fresh Claude window and it already knows your project".

Interesting product. One thing I’m curious about from a technical standpoint though, I’m guessing Memdex relies on scraping data from ChatGPT/Claude/Gemini web apps, doesn’t that become fragile over time?

I built a small chrome extension for myself a while ago that scraped linkedin job descriptions, and it kept breaking whenever linkedin changed their dom structure. From what I have seen, a lot of companies intentionally change frontend structures specifically to make scraping harder.

Did you think about this problem while building Memdex? Curious how you’re making the integrations stable long-term.

First of all congrats on your launch!I just checked your website and landing page storytelling is great which is usually first thing that caught my eye in any new tool and something i spent good time to deliver it in my own tool as it is the first impression for any new user.I use Claude a lot and many times it misses the past convos even though i ask it to update the memory but in fact it still repeats the same old information. Does Memdex helps solving this issue?

"Reusable local memory" is the part most AI tools paper over with "your data is private" wording without actually solving the locality problem. Curious which decision was harder — the storage shape or deciding what NOT to capture. That second one usually defines how a memory tool ages.

The Grammarly-for-context framing is strong. The place I’d be careful is separating durable memory from stale task state.Some things really should follow me everywhere: product constraints, preferred wording, customer language, recurring project facts. Other things are only useful for this week’s thread and become confusing later. I’d love a lightweight way to mark injected context as “keep reusing this” vs “only for this task/session,” plus a small preview of why Memdex thinks a prior chat is relevant before it inserts it.

I literally had a discussion with Claude about this and few days ago and wanted to build something.

No the issue remains: how do I get my mobile conversations tracked as well?

Hey Andrew! Sounds obvious but it actually isn't. Also jumped between all of them and know how hard is to set again the context. I'm sure ti's gonna change the game. Wish you all the best!

Reusable conversational memory is one of the biggest unlocks for practical AI workflows.

I just woke up and opened Product Hunt to see what’s launching today. Memdex caught my eye so I went through the homepage, and the way you described the context detection flow felt clean. Great work! By the way I lose my best AI chats all the time. Scrolling through the history is a nightmare. So this idea... I like it. I have a question though. Since everything stays on my device, how does the matching actually work? Is it just looking for the same words, or does it understand the meaning behind them? Either way, cool product. Rooting for you.

Hey Product Hunt 👋

I'm Andrew. After spending most of last year jumping between ChatGPT, Claude, and Gemini, three things wore me down:

1. Every new chat starts at zero. I keep re-explaining the same project, the same constraints, the same voice.
2. My "memory" lives in someone else's cloud — locked to one model, invisible, unmovable.
3. The existing fixes are heavier than the problem: vector DBs, accounts, settings panels, prompts called /remember.

So I built Memdex.

Memdex is a browser extension that does three things, automatically:

• Saves every chat on ChatGPT, Claude, Gemini, Perplexity, and Grok to encrypted files on your laptop. Never uploaded, never trained on.
• Detects when something you already discussed is relevant to what you're typing now — like Grammarly, but for context.
• Injects that memory into any AI tool with one click. No copy-paste. No re-explaining.

The aha is the second tab: you open a fresh Claude window and it already knows your project, because last week's ChatGPT thread is on your disk and Memdex just pulled it in.

It's local-first (memory never leaves your machine), cross-model (one memory, every tool), and zero-ritual (no /remember, no DB, no signup to start). Free tier auto-saves your 10 most recent chats; Pro is unlimited.

👉 Add to Chrome: https://chromewebstore.google.co...
👉 Site: https://memdex.ai

What I'd love feedback on:
- Where "detect" feels noisy vs. genuinely useful
- Which tools you want next (Cursor, Windsurf, v0, Lovable are on the list)
- Anything that makes you not believe "local-first" — I want to fix the perception, not just the reality

Building in public from here — happy to answer anything in the thread.

— Andrew