Calling Code is a very nice monospaced font
1. is a monospaced font family for coding and tabular layout.
2. simply consists of 4 styles; Regular, Italic, Bold and Bold Italic.
3. is ready in both OpenType and TrueType formats.
4. has slightly condensed widths for more useful space.
5. has good distinguishability and legibility and cute curly tails.
6. brings a fresh sensitivity to boring old existing monospaced fonts.
You can try Regular style for free!