Applications

App	Website	Description
Memotron	memotron.app	Your memory atlas, a tool for managing your digital memory and personal knowledge. Tags: Digital memory, PKM, Note‑taking, Knowledge management.
Pointron	pointron.app	Your focus haven, a tool for tracking your goals and managing your time. Tags: Focus, Time tracking, Goals, Events and Task management.

*For early access to our new products - please join our Discord here.

Note: All of the above tools are designed for personal use and lack team/group features like collaboration, sharing, etc.

Self hosting

Currently, only the frontend apps can be self‑hosted on your own server. This means you cannot sync data between devices when self‑hosting. To deploy the offline‑only frontend at your own URL, follow these steps.

1. Clone/Fork this repository
2. This is a turbo repo with /apps folder containing apps that can be deployed. Choose the app sub-folder corresponding to the app you want to run.
3. Set the environment variables.
4. Deploy to the provider of your choice

VITE_PRODUCT={{memotron | pointron | nucleum }}
VITE_STATIC_URL=https://cdn.21n.co

Full app deployment including backend will be available soon...

Contributing

Due to the current size of our team, we are not accepting external contributions at this time. We appreciate your interest and understanding.

License

This project is licensed under the AGPL-3.0 license. See the LICENSE file for details.

Contact

For any questions, security reporting or feedback, please contact us at [email protected].

❤️ We extend our deepest gratitude to all the OSS libraries and tools that made this project possible.

Code organization

Product bundles in apps/ compose user-facing features from client/features/. client/ui/ is the domain-free, portable @21n/ui package: elements owns atomic controls, compositions owns reusable compound UI such as charts, breadcrumbs, nested lists, search controls, and time controls, actions owns generic DOM behavior, icons owns portable icon assets and rendering, illustrations owns portable artwork, branding owns pure visual brand assets, and environment plus hosts provide package-wide integration contracts. Portable UI receives product behavior through props or narrow hosts and remains independent of application state, runtime infrastructure, products, features, DataFn, persistence, schema, and domain state. Product-independent Nucleum behavior shared across features or products lives in named subdirectories of client/shared-state/ and is imported from @nucleum/shared-state/*, including command ports and application events; this package must not depend on application, feature, or product implementations. schema/ owns cross-layer contracts, client/datafn/ owns storage and sync, and services/account/ owns the backend. Application composition lives in client/composition/; account, settings, sharing, library and other workflows live in client/surfaces/; navigation, notification presentation and shortcut execution live in client/shell; UI-independent infrastructure lives in client/runtime/. State is colocated with app context, runtime, preferences, persistence, shell, or feature owners rather than a generic client/state directory.

Start with system architecture, data and synchronization, and deployment topology for repository-wide boundaries. See client boundaries for the current ownership model, client dependency map for the owner graph and app component chain, type ownership for contracts, and CONTRIBUTING.md for maintainer orientation. Phase journals live in docs/architecture/history.