Liminary

Overview

Liminary is an AI-native knowledge management tool designed to store, organize, and surface your personal information exactly when you need it. You can save webpages, PDFs, YouTube videos, AI chat transcripts, and files from your desktop into a unified library. The difference from standard bookmarking tools is the AI recall layer: Liminary monitors what you're working on and proactively surfaces relevant saved content in context, rather than waiting for you to search for it. This makes it particularly useful for researchers, writers, and knowledge workers who accumulate large reference libraries but struggle to retrieve the right material at the right moment. The platform is currently in Open Beta, meaning it's free to use while the product team refines features and collects feedback. Liminary positions itself against tools like Notion AI, Readwise, and Mem, but its proactive recall differentiator is what sets it apart from passive storage tools.

Features

• Universal content capture -- Save webpages, PDFs, YouTube videos, AI chats, and desktop files in one place
• Proactive knowledge surfacing -- AI monitors your current work and resurfaces relevant saved content automatically
• Natural language search -- Find anything in your library using plain language queries
• YouTube transcription and indexing -- Videos are transcribed so their spoken content becomes searchable
• AI chat capture -- Saves conversations from ChatGPT, Claude, and other AI tools for future recall
• Browser extension -- One-click saving from any webpage without interrupting your workflow
• Semantic indexing -- Content indexed by meaning rather than just keywords for better recall precision
• Desktop file integration -- Capture and index files from your local machine alongside web content
• Cross-device access -- Your knowledge library is available across devices via the web app
• Open Beta (free) -- Full access during the beta period with no payment required
• PDF annotation capture -- Save annotated sections from PDFs alongside the original document
• Planned paid tiers -- Structured plans expected after beta launch

Best For

Researchers and students managing large reference libraries for writing projects, Knowledge workers who need to recall information gathered across weeks of browsing, Content creators who collect inspiration, examples, and research before producing, Writers and journalists who save sources and need to surface them while drafting, Productivity-focused professionals experimenting with AI-assisted personal knowledge management

How It Works

You connect Liminary to your information sources by installing the browser extension and desktop integrations. When you encounter a webpage, PDF, or video worth keeping, a single click saves it to your Liminary library. The AI processes saved content to extract key themes, topics, and entities, building a semantic index rather than relying on manual tags. As you work in other applications or browse new content, Liminary's recall engine runs in the background, matching your current context against your library and surfacing relevant items in a sidebar or notification. You can also search manually with natural language queries. YouTube videos are transcribed and indexed so you can search within video content. AI chat transcripts from tools like ChatGPT or Claude are also captured and fully searchable. The Open Beta is currently free, with paid tiers planned post-launch.