PopChar - The character map that works!
NexusFont - Choose and manage your fonts with Nexus Font.
font-viewer.com - A browser-based font viewer.
Font Manager - Simple font management for GTK+ desktop environments
Typetester - Typetester is an online tool for designing with web fonts.
Connect Fonts Powered By Suitcase - A flexible font manager that uplevels the classic desktop application with intuitive search, pairing suggestions, and remote access in the cloud to keep you inspired, no matter where you are.