Chatstack

ChatStack adds a smart sidebar to ChatGPT, Gemini, Claude, and DeepSeek chat pages so you can navigate, search, and organize conversations in one place.

What it does
• Smart TOC (table of contents): Automatically builds a conversation outline from your messages. Jump to any turn with one click and see it highlighted.
• Keyword search & pinpoint jump: Search within the current conversation or across saved history. Results show context snippets; clicking scrolls to the exact message.
• Cross-platform conversation & project grouping: View and manage conversations from all four AI chat platforms in a single sidebar. Group chats into projects (including auto-synced platform folders and your own “My Projects”).
• Favorites & export: Star important messages, filter by role or favorites, and export conversations as JSON, Markdown, or TXT (single or ZIP).

Why install
If you use ChatGPT, Gemini, Claude, or DeepSeek and want faster navigation, in-conversation search, and a single place to organize and export chats, ChatStack keeps everything local in your browser—no data is sent to external servers.