Hex Edit Free
Easy to use and reliable binary file editor. Many options such as: autofit, INS/OVR modes, fast search/compare, highlighter, bookmarks, EBCDIC, color schemes. Display/change over 60 properties: integers, floats, dates etc. Advanced features like background searches, keystroke macros, powerful templates, calculator, 4GB+ files, full customization.
Version 3.0 adds new “stacked” display mode, change tracking, new operations, new template features, random number generation, repair commands, copy as C/C++ source.