Torrust-Axum is now released as a working project. It's production ready, as far as I'm using it right now.

Torrust-Axum can run with or without a persistency database as alternative for OpenTracker and other public tracker software. Private Tracking using a Whitelist and Blacklist will be implemented for version 3.1.0

Torrust-Axum supports:

• SQLite3
• MySQL
• PostgreSQL