Personal knowledge base AI tools with browser extensions

Recall automatically summarizes articles, podcasts, PDFs, videos, and notes, storing them in a local knowledge base with a smart graph and tags. It offers full‑text search, chat, spaced‑repetition reminders, cross‑device sync, and export to Markdown.

ChatGPT Folders organizes conversations with unlimited folders, drag‑and‑drop, color codes, sub‑folders, search, bookmarks, and bulk delete. A prompt manager supports variables, folder organization, imports, and a curated prompt library. It manages images/files, syncs across devices, uses local storage, and offers dark/light modes.