Its a frontend for XBT Tracker by Olaf van der Spek.
XBT Tracker is a BitTorrent tracker written in C++. It's designed to offer high performance while consuming little resources (CPU and RAM)
Features:
- Torrent List Page
- IP Ban Manager
- Client Ban Manager
- Freeleech Option (torrent | global | user)
- Bonus System
- Category System (Integrated with XenForo forum nodes)
- Ratio Check System
- Weekly tracker stats (Top 10)
- One torrent per thread
- Wait Time System
- Peers Limit System
- Integrated with User Upgrades
- Magnet Links
- Responsive Layout
- Minimum Post Restriction
- Peer Speed
- Snatch List
Price: 100$ per license
Demo: http://www.xentt.net