What are some alternatives?
NexusFont - Choose and manage your fonts with Nexus Font.
FontExpert - FontExpert - Font Manager for Windows, Photo Manager for Digital Photography.
Font Manager - Simple font management for GTK+ desktop environments
Typeface 2 - Typeface is a wonderful font manager for macOS that helps you pick the perfect type for your...
Font Runner - If you have a large collection of fonts, keeping them all in your Windows Fonts folder can be...
RightFont - The future of font manager software for Mac OS X