GPT Book Club vs Boss Hub | AI (formerly DocGPT & ChatPDF➶)

GPT Book Club was a browser-based reading companion that let you ask questions of popular nonfiction titles and get answers pulled from chapter summaries, quotes, and FAQ-style guides. The team also sold Notion template guides for books like Atomic Habits and The Psychology of Money for about $5 each through Gumroad.

The service is no longer available at its original URL. A live fetch of gptbook.club in August 2026 returns unrelated King Billy Casino gambling content, and the interactive book search that defined the product is gone.

Readers who used GPT Book Club typically wanted faster takeaways from bestsellers without reading cover to cover. The cached knowledge hub listed abridged guides with chapter summaries, quote collections, and habit or finance trackers built in Notion.

Boss Hub | AI is a Chrome extension sidebar for chatting with uploaded documents using ChatGPT and GPT-4. You upload a PDF, Markdown, Epub, or FB2 file, then ask questions, request summaries, and see highlighted source passages inside the side panel. It targets anyone who wants document Q&A without leaving the browser.

Compared with standalone ChatPDF sites, Boss Hub runs as a Chrome side panel and stores data locally on your machine. The listing highlights a built-in token usage tracker, periodic deletion of uploaded files, and support for Markdown alongside PDF. That local-first angle matters if you are comparing browser extensions rather than cloud-only upload tools.

Researchers, students, and office workers who already live in Chrome can use it to skim contracts, reports, or ebooks faster. The developer site is iambuffett.net, and the extension last updated to version 1.3.5 in July 2024.