CrossMind Profile
A persistent 'you' profile that follows you across ChatGPT, Claude, Gemini, and Perplexity, injecting your writing voice, project context, and preferences into every chat so you never have to re-explain yourself.
Knowledge workers, freelancers, and creators who use 3–5 AI tools every week
- One-click "inject my context" browser extension that works on every major AI chat site
- Auto-learns your writing voice from past emails, docs, and posts to mirror your tone
- Project memory that survives across tools (e.g., 'remember the Q3 launch brief I shared in ChatGPT yesterday')
- Privacy vault: encrypted local storage with explicit allowlists per AI tool
Memmy Agent just launched on Product Hunt with the line 'Let every AI remember the same you' — the underlying pain is acute now that people juggle multiple AI tools weekly with zero shared memory.
MemoryPlugin site cites users spending 3-4 hrs/week re-explaining context, claims 4.5 stars from 100+ reviews, and the existence of 4+ paid competitors (MemoryPlugin, MemoryLake, Rethread, AI Memory Pro, Memmy) confirms real, validated demand from knowledge workers juggling multiple AI tools.MemoryPlugin | One Memory for ChatGPT, Claude & 21+ AI Tools ↗AI Memory for ChatGPT, Claude & Gemini | Rethread ↗
Red ocean: MemoryPlugin, MemoryLake, Rethread, aimemory.pro and Memmy (MemOS) all pitch essentially the same 'one memory across ChatGPT/Claude/Gemini/Perplexity' value prop with overlapping feature sets (browser extensions, syncing, MCP). Memmy Agent (the cited trigger) is itself a direct competitor.MemoryPlugin | One Memory for ChatGPT, Claude & 21+ AI Tools ↗One Memory Across ChatGPT, Claude & Gemini (2026 Guide) - memorylake.ai ↗Cross Platform AI Memory — The Only Tool That Works Across ChatGPT ... ↗AI Memory for ChatGPT, Claude & Gemini | Rethread ↗Memmy LAUNCHED: Let every AI remember the same u ↗
Clear willingness to pay: MemoryPlugin runs a paid product with 7-day trial and 14-day refund, has 100+ paid reviews, and explicitly markets price-vs-time-saved ('less than 1 hour per month'). Per-seat/team buckets unlock further B2B revenue as referenced on the site.MemoryPlugin | One Memory for ChatGPT, Claude & 21+ AI Tools ↗
Structural pain tied to proliferation of AI tools — every new model launch recreates the fragmentation problem, and accumulated memories create switching costs/compounding value (MemoryPlugin explicitly markets 'compounding context').MemoryPlugin | One Memory for ChatGPT, Claude & 21+ AI Tools ↗
Buildable as a browser extension + MCP server, but maintaining parity across 5+ AI UIs (DOM changes, rate limits, official memory endpoints), parsing multiple chat-history export formats, and resolving memory conflicts between silos is significant ongoing engineering work — not a weekend project.How to Sync Memory Across ChatGPT, Claude, Gemini, Perplexity, Grok ... ↗