PT Mono

PT Mono is a monospace typeface designed by ParaType, added to Google Fonts in 2012. It's available in 1 weight.

This is one of 4 character sets supported (cyrillic, cyrillic-ext, latin, latin-ext). Being free and open source, it's a great choice for web projects, print, and branding — and it's a frequent result in the font finder.

Putting it on a site? See the guide to using custom fonts on the web.