SigmaNote – your second brain
AI-powered tools convert files/linkages into editable and searchable notes.
Introduction
AI-powered tool turning files/links into editable, searchable notes.
What is SigmaNote?
SigmaNote is an AI-driven tool designed to convert any file, link, or video into editable, searchable notes that can also be used for chatting. Its function is akin to that of a “second brain” – it allows users to capture various types of content, transform it into clean Markdown notes prepared by AI, and then interact with these notes through search, chat, and organization features. This platform is aimed at helping users efficiently capture, process, and retain information, providing a unified workspace for working with original sources, personal notes, and AI-driven conversations.
How to use SigmaNote?
To use SigmaNote, users can capture content by sharing PDF files, pasting URLs, or using the built-in editor. The application then converts this content into editable Markdown notes, allowing users to make changes with just one click while preserving the visual appearance of the original files. Users can also engage in conversations regarding their notes, ask follow-up questions, obtain summaries, conduct brainstorming sessions, or refer to previous notes. Notes can be organized into “spaces” (folders) for easy management.
The core features of SigmaNote
AI-powered note conversion capabilities are available for files, links, and videos.
Editable notes, with search and chat functions available.
Capturing content from various sources (web links, PDF files, YouTube videos, Dropbox folders, emails, etc.)
Instantly converted into Markdown format prepared by AI.
Chat with your notes to get summaries, follow-up information, and engage in brainstorming sessions.
Organize your notes into folders.
Intelligent note editor, featuring AI-based organization and citation features.
Task-aware chat history; access to the original files.
Editable notes, with search and chat functions available.
Capturing content from various sources (web links, PDF files, YouTube videos, Dropbox folders, emails, etc.)
Instantly converted into Markdown format prepared by AI.
Chat with your notes to get summaries, follow-up information, and engage in brainstorming sessions.
Organize your notes into folders.
Intelligent note editor, featuring AI-based organization and citation features.
Task-aware chat history; access to the original files.
Visits：13
Updated：2026-11-07
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