BabelMap - Unicode Character Map for Windows
Event Viewer - Get help, support, and tutorials for Windows products—Windows 10, Windows 8.1, Windows 7, and Windows 10 Mobile.
PopChar - The character map that works!
WinCompose - WinCompose supports the standard Compose file format.
Oh My Glyph - View the glyphs and swashes from the PUA (private use area) of TTF & OTF font files with ease with our browser app - nothing to install!
UnicodeChecker - Mac OS X application to explore Unicode.