From Open Watcom

Free Monospaced True Type Fonts

• Droid Sans Mono - A font from Google.
• Envy Code R - A nice monspaced font under construction.
• Inconsolata - Designed for printing of source.
• Bitstream Vera Sans - Used by Gnome and KDE. Or see the DejaVu page for wider range of characters.
• Andale Mono - Clean and crisp, from Microsoft.
• Anonymous - Made to be more legible than Monaco, both Windows and Mac versions.
• Courier New - Included with MS-Windows 95 and newer.
• Freemono - History and progress on Project page
• Lucida Console - Windows NT command prompt font.
• Lucida Sans Typewriter Regular - Included with Sun's free Java SDK download.
• Crystal - Availiable with free Povray software. (Or here)
• String Literal - Information

Free Monospaced Bitmap Fonts

• Terminus
• Raize - for Windows. Description
• ProFont for: Windows, Mac, X11/Linux or in TrueType
• Triskweline - Windows & X11.
• Proggy - Windows, X11 & TrueType.
• Envy Code A and Envy Code B - Windows.