Heptabase

All-in-one AI Workspace: Create professional slides, essays, videos, images, podcasts, and deep research in minutes.

Flexnote is a local-first visual note-taking app for deep learning and research. Capture ideas as cards, arrange them on an infinite canvas, and connect them with mind maps and bidirectional links. Annotate PDFs and YouTube videos, then use Flexnote AI to search, summarize, and organize your own knowledge base. Notes stay on your device by default, with optional sync through OneDrive, S3, or WebDAV. Free to start on Windows, macOS, and Android.

AI-powered mind mapping tool for visual learning and research.

AI tool for summarizing articles and research papers into interactive flashcards.

AI note taker and study guide maker: turn lectures, meetings, PDFs, YouTube videos and audio into structured notes, summaries, flashcards, quizzes, mind maps and podcasts. Web, iOS and Android.

AI thinking and research space that helps you organize ideas visually, research smarter, and create work you can stand behind.

AI workspace for turning YouTube videos into searchable study notes and research insights

AI meeting note taker for investors, designed to capture, transcribe, and organize meeting information.

AI-driven platform for document interaction, summarization, and contextual answers.

Graph-based Personal Knowledge Management tool with AI mind mapping and chat.

kOS: A research tool for creating PDF databases with AI and citation features.

lxi.ai: AI-powered collaborative canvas for document interaction and knowledge management.