DistroWatch - 9 hours ago - It does include a proprietary software set optimized for business users, students, researchers and developers." A list of features and further details can be found in the company's release announcement.
Tealfeed - A knowledge sharing platform to empower creators
DistroHunt - Donation-based and video-focused directory of Linux distributions
Threads - Making work more inclusive.
The LiveCD List - This site was created to help sort through the many LiveCDs available.
Sametab - Share company announcements in your coworker's new tab