Typewolf - Typewolf helps designers choose the perfect font combination for their next design project—features web fonts in the wild, font recommendations and learning resources.
NexusFont - Choose and manage your fonts with Nexus Font.
Google Fonts - Making the web more beautiful, fast, and open through great typography
Font Manager - Simple font management for GTK+ desktop environments
FontFont - World’s largest library of original contemporary typefaces.
Fonty - Simple tool for testing web fonts directly on live sites