Chrome + Firefox Extension

Threadmark

The missing organization layer between you and your AI tools.

Add to Chrome Featured

Free on Chrome + Firefox Local-only data No account required

Why Threadmark

AI tools are great for answers, but not for organization.

Threadmark is a lightweight workspace layer for ChatGPT and Claude. Save high-value moments, organize them by project, and return instantly across sessions without breaking momentum.

Save full messages or highlights in one click.
Organize everything into folders with quick search.
Jump back to exact moments instantly instead of scrolling.
Branch saved ideas into new ChatGPT or Claude threads.
Export your archive when it's time to share or ship.

Cross-AI workflow

Capture in one tool. Reuse in the next.

Move between ChatGPT and Claude without losing your best thinking. Threadmark keeps every important moment in one organized layer.

Threadmark running inside Claude.ai — New: Claude.ai support **One memory layer across ChatGPT and Claude.** Save in Claude, revisit in ChatGPT, and keep your best moments organized in one project flow.

Save a highlighted AI moment with Threadmark — **Save what matters instantly** Capture full messages or highlights without leaving the conversation.

Jump back to saved ChatGPT or Claude moments — **Find breakthrough moments fast** Jump back to the exact source of an idea, even across long sessions.

Branch saved prompts into new AI threads — **Branch ideas across tools** Turn saved prompts into new threads and keep context as you iterate.

Export saved Threadmarks — **Export when it's time to ship** Share a clean, chronological archive of everything you saved.

Save in one click. Grab the full message instantly when you don't need a highlight.

See Threadmark in action.

Pro upgrade

✨

Threadmark Pro

One upgrade unlocks unlimited capture and export across your AI workflow.

Unlimited Threadmarks across ChatGPT and Claude.
Unlimited folders for organized project workflows.
Export everything as a clean, chronological PDF.
Lifetime access with a single payment.

Unlock Pro for $5 one-time

Built for

🧠

People building with AI every day

Threadmark is for people who use AI like a workspace and need continuity across tools and sessions.

Builders tracking decisions and requirements over time.
Writers and researchers saving prompts, phrasing, and drafts.
Developers capturing code ideas before they disappear.

Free on Chrome and Firefox. Works with ChatGPT and Claude. Private by default, local by design.