HEXtreme

Powerful Color Coded 100% Free Hex Editor for Windows. Customize your own color coding to make files more readable to you. Save color schemes as themes. Easy to use multiple document interface with modern look & feel. Quickly and easily edit files up to 4 gigabytes in size with no worry of running out of memory. Lightning fast searches on even the largest of files. Search a file for a hex string, common ASCII string, or even for Unicode strings.