M+ 1m - Download and install the M+ 1m free font family by M+ Fonts as well as test-drive and see a complete character set.
Google Fonts - Making the web more beautiful, fast, and open through great typography
Bitstream Vera Sans Mono - Bitstream Vera Sans Mono Font | dafont.com
FontJoy - Get smart font pairings in one click
Inconsolata - OSX, Productivity, Design, Typography, powerline, and Fonts
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.