JARR

A web‑based aggregator collects RSS and Atom feeds, presenting them in a three‑column interface where users can browse categories, view article lists, and read selected items directly in the browser. The application uses Flask on the backend with SQLAlchemy for database abstraction, supporting various SQL engines such as PostgreSQL, while the frontend is a single‑page React app.

The service includes optional readability processing that can fetch a cleaned version of articles when a readability key is supplied, and it can automatically apply this to feeds that lack full content. It also offers clustering of articles based on link similarity or TF‑IDF content analysis, helping users discover related items.

JARR is self‑hostable, released under the AGPL‑3.0 license, and provides a publicly available instance and API for testing. Ongoing development adds features and improvements, with milestones and security guidance documented in the repository.