Binary / hex editor and component written in Java
wxMEdit, Cross-platform Text/Hex Editor, Improved Version of MadEdit
One hundred command line tools in a small and portable binary.
A hex editor Eclipse plugin and multi-platform desktop application
THC - Convert Hex, or String with ease!
Open-source, cross platform Qt based IDE for reverse-engineering
OS bootable from Linux,Windows and others partitions as auxiliary OS
elvis, a vi text editor clone
Advanced multiplatform text editor for developers
HTML Editor made with Lazarus