Newspipe (formerly pyAggr3g470r) is a web news reader.
multiple users can use a Newspipe instance;
to manage feeds (you can connect your own crawler);
data liberation: export and import your account with a JSON file;
export and import feeds with OPML files;
search and favorite articles;
detection of inactive feeds;
share articles on Pinboard, Reddit and Twitter;
management of bookmarks (with import from Pinboard).
The core technologies are Flask, asyncio and SQLAlchemy.
Python 3.8 is recommended.