PopChar - The character map that works!
BabelMap - Unicode Character Map for Windows
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.
Typetester - Typetester is an online tool for designing with web fonts.
WinCompose - WinCompose supports the standard Compose file format.