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ExtMemo
AI-powered notes that connect like a timeline.·extmemo.com
ExtMemo is an AI-powered note-taking app that links notes into chronological chains, using AI to help organize and explore personal knowledge. It offers end-to-end encryption for private memos, multi-person sharing with permissions, a visual dependency-based task manager (Hyper Todo), and a 3D semantic visualization of notes called Nebula View. It is available as a web app and as mobile apps.
What it's for
Capturing and chaining ideas, tasks, and events with automatic timestampsSecurely storing private notes with end-to-end encryptionCollaborating with a team or family on shared notes and tasksManaging tasks with visual dependencies and deadline urgency trackingVisually exploring and discovering connections between notes in a 3D map
Features 16
- AI assistant that learns from stored notes to answer questions
- Automatic timestamps on each note entry
- Chain note-taking that links ideas, tasks, and events in context
- Drag-and-drop task dependency mapping on a visual canvas
- End-to-end encryption (E2EE) for individual memos or memo chains
- Full-featured web app with data export in one click
- Hyper Todo visual dependency and context-based task manager
- In-context tasks embedded within meeting notes and documents
- Interactive 3D exploration with zoom, rotate, and fly-through navigation
- Multi-person sharing with flexible permissions and real-time sync
- Nebula View: 3D visualization of notes as a semantic knowledge galaxy
- Pressure cascading of deadlines between dependent tasks
- Secure sharing of E2EE content with selected members
- Semantic clustering of notes based on topic similarity
- Smart deadline shuffling that highlights urgent tasks with color changes
- Zero-knowledge architecture for encrypted content
At a glance
TypeMobile app
DeploymentCloud
PlatformsWeb, iOS, Android
CompanyExtMemo AI