HEATKEYS

Diff Checker is a free online diff tool that gives you the text differences between two blocks of text.

WinMerge is an Open Source differencing and merging tool for Windows. WinMerge can compare both folders and files, presenting differences in a visual text format that is easy to understand and handle.

DiffNow lets you compare text files, documents, binary files, and archives up to 2048KB in size. You can either upload the files you wish to compare or enter their URLs. Results are returned as an interactive HTML report.

Perforce is the Fast Software Configuration Management System. Perforce SCM versions and manages source code and digital assets for enterprises large and small.

PrestoSoft award-winning products include ExamDiff Pro, a visual tool for text and binary file and directory comparison, and FtpVC, a serverless version control system.

CollabNet, Facilitating Collaborative Software Development

Text Compare! is an online diff tool that can find the difference between two texts. Just paste and compare.

Merge and Diff your documents with diff online and share

GnuWin32 provides Win32 (MS Windows 95 / 98 / ME / NT / 2000 / XP / 2003 / Vista / 2008) ports of tools with a GNU or similar open source license.