Opcion Font Viewer - Opcion Font Viewer is the name of a free and open source font viewer that will make you able to get the view of both installed and uninstalled fonts in your system.
PopChar - The character map that works!
font-viewer.com - A browser-based font viewer.
Event Viewer - Get help, support, and tutorials for Windows products—Windows 10, Windows 8.1, Windows 7, and Windows 10 Mobile.
WordMark.it - If you are a font lover, here is the best platform for you named as Wordmark.
Typetester - Typetester is an online tool for designing with web fonts.