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Notes per conversation
Capture context, decisions, loose ideas and next steps directly next to the conversation where they belong.
Free beta · Local-first · Built for ChatGPT power users
Keep your thinking next to your ChatGPT conversations.
ChatMargin adds a lightweight sidebar to ChatGPT for local notes, prompt drafts and follow-ups. Stop losing track of where you were, what remains to do, and which conversations matter. The beta is free to use, with optional voluntary contributions for people who want to support ongoing development.
Official website: chatmargin.app. Independent tool. Not affiliated with OpenAI or ChatGPT. Currently free while we improve it with early users.
Product
A local workspace for ChatGPT users.
ChatMargin is a browser extension for people who use ChatGPT across long, complex or unfinished conversations.
- What it is: a local sidebar that appears next to ChatGPT conversations.
- What it does: lets you keep notes, prepare prompts and track follow-up conversations.
- Who it is for: heavy ChatGPT users, consultants, researchers, founders, builders and writers.
- Current status: free beta, with optional voluntary contributions to support development.
Why it exists
ChatGPT is powerful. Long conversations are messy.
ChatMargin is for people who use ChatGPT as a serious work surface: consultants, builders, researchers, founders, writers and AI-heavy teams.
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Prompt drafts
Prepare prompts before sending them. Dictate, copy, and keep a simple record of what you already used.
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Follow-up dashboard
Mark conversations as unfinished and return to them later from a local dashboard.
Local-first
Your notes stay in your browser.
ChatMargin is designed to be useful without accounts, servers or hidden data collection.
- Notes and prompt drafts are stored locally in your browser extension storage.
- There is no ChatMargin account and no ChatMargin server in the beta.
- We do not sell user data.
- Feedback is only sent when you deliberately email us.
- See the Privacy Policy for the full wording.
Free while we build with early users.
ChatMargin is currently a free beta. If it helps you work better with ChatGPT, you can make an optional voluntary contribution to support ongoing development. This is a voluntary creator contribution and it does not unlock paid features in the beta.
What contributions support
Bug fixes, better export, richer dashboards, cross-LLM support, smarter summaries and future pro features for heavy users.