Google Fonts - Making the web more beautiful, fast, and open through great typography
Font Viewer - Font Viewer is an application which does exactly that - it views fonts!
FontJoy - Get smart font pairings in one click
NexusFont - Choose and manage your fonts with Nexus Font.
JetBrains Mono - A free font that makes it easier for devs to read code 🛠️
Font Manager - Simple font management for GTK+ desktop environments