Nesso

Cost / License

Free
Open Source (MIT)

Application typeApplication types

Origin

Italy
EU

Since

Updated

Updated Nov 2026

Platforms

Mac
Windows
Linux
Online
AppImage

Notes for each view, written in Markdown, with the AI chat ready to analyze, expand or organize your graph.

Spaced repetition on your own concepts: recall each one, check it against your notes and its connections, then rate how well you remembered.

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Properties

Privacy focused
Support for Themes
AI-Powered

Features

Ad-free
No Coding Required
Live Preview
No registration required
Support for MarkDown
Extensible by Plugins/Extensions
No Tracking
Works Offline
Mind Mapping
Srs
Learn with Flashcards
Note taking app
Knowledge Management
Concept Mapping

Nesso information

Developed by
Nesso
Licensing
Open Source (MIT) and Free product.
Written in
TypeScript
Alternatives
8 alternatives listed
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Supported Languages
- English
- Italian
- Chinese

AlternativeTo Categories

Office & Productivity, Education & Reference

GitHub repository

12 Stars
1 Forks
3 Open Issues
Updated Nov 6, 2026

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Nesso was added to AlternativeTo by Omar Desogus on Nov 5, 2026 and this page was last updated Nov 6, 2026.

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What is Nesso?

Nesso is an open-source (MIT), local-first app for building a personal knowledge graph. You connect concepts with typed, directed relations such as "causes", "part of" or "example of", and organize them in views: named subsets of the same graph, so a concept can appear in several contexts without duplicates. Concepts that share a relation are grouped automatically, so the map stays readable as it grows.

Most note-taking apps store documents and leave the connections between ideas in the background. Nesso puts them at the center: you decide how ideas relate, and that is where understanding is built. AI can help you explore and organize, but it doesn't build the map for you.

Concepts have Markdown notes, and each view has its own notes page for plans, questions and ideas. The bundled Review plugin schedules spaced repetition with FSRS. Your graph stays on your device and the app has no telemetry. Optional AI chat works with your own API key or a local model, and a local MCP server connects external assistants. Plugins add relation vocabularies, themes and actions.