Threadwing by SimpleZion

Threadwing keeps very long ChatGPT conversations responsive without deleting their history.

• Adaptive rendering retains the most useful recent context based on text, code, math, tables, and images.
• A virtualized timeline can load the complete conversation, search every readable user and assistant message, inspect branches, and jump back to the original message.
• Search supports quoted phrases and focused filters for role, code, math, images, files, and the active branch.
• Safe apply preserves the current draft, selection, and scroll position during an intentional refresh.
• Export the conversation as Markdown, JSON, HTML, or a printable document.

Threadwing is local-first. It has no backend, account system, analytics, advertising, telemetry, or conversation upload. Conversation data and its search index remain in extension-origin storage on your device.

Supported browsers: Chrome, Microsoft Edge, and Firefox 142+. Supported sites: chatgpt.com and chat.openai.com.