file comparison tool

WinMerge - Folder Compare Freeware

WinMerge

WinMerge is an Open Source file and folder comparison and merging tool. This portable differencing and merging tool can be used to visually compare differences or changes in folder or files in a format that is easy to understand. The software can then be instructed to merge or sync those changes.

ExamDiff - File Comparison

File Comparison with ExamDiff

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.

TextDiff - File Comparison Tool

TextDiff Free File Comparison

If you're a developer, writer, editor, or anyone who regularly works with text files, TextDiff is an invaluable tool for comparing file content and tracking changes over time. Whether you're updating documents, writing code, or collaborating with multiple contributors, this free, portable file comparison tool helps you efficiently spot differences between versions, ensuring accuracy and consistency in your work.

FreeFileSync - File Compare and Sync Tool

portable-file-comparison-freefilesync

FreeFileSync is a portable file comparison or file and folder synchronization tool. It can be used to compare files or folders by file size and date or file content. It also supports file sizes in excess of 4GB and batch processing for automated synchronizing is possible.