Portable Programming software tools and utilities
ExamDiff is a Portable and Free File Comparison Tool that can be used to compare files to see if they are identical. It is a freeware visual file comparing application that features browse and drag and drop file comparison, can automatically detect file changes, and provides plenty of customizable display options.
Rapid Environment Editor is a Freeware Windows Environment Variables Editor created by Oleg Danilov. Available in a portable version, this environment editor enables you to edit your environmental variables (name, type, path, etc) via an easy to use graphical underlying interface that presents system and user variable paths in a tree like fashion.
Resource Hacker is an amazing, portable, powerful freeware executable editor that can be used to view, modify, rename, add, delete, or extract the resources from 32-bit Windows "EXE" executables or "RES" resource files. The utility allows users to quickly and easily tweak an executable to add or remove features.