Input Mono - Multiform monospace font.
Operator - Looking for something? Make a request and we'll find it.
Inconsolata - OSX, Productivity, Design, Typography, powerline, and Fonts
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.
DejaVu Sans Mono - This open source font family is derived from the Bitstream Vera family, itself close to the Microsoft core Web fonts (see Andale Mono).
Source Code Pro - Monospaced font family for user interface and coding environments - adobe-fonts/source-code-pro