Top Alternatives to Beyond Compare

WinMerge is an Open Source differencing and merging tool for Windows.

Meld is an opensource visual diff and merge tool for developers.

KDiff3 (64-Bit) is a graphical text difference analyzer for up to 3 input files, provides character-by-character analysis and a text merge tool with integrated editor.

Unison is a file-synchronization tool for OSX, Unix, and Windows. It allows two replicas of a collection of files and directories to be stored on different hosts (or different disks on the same host), modified separately, and then brought up to date by propagating the changes in each replica to the other.

Araxis Merge two and three-way file comparison (diff) and merging application.

Comparison plugin for Notepad++ editor.

Code Compare is a free tool designed to compare and merge differing files and folders.

WinMerge is a free software tool for data comparison and merging of text-like files. It is useful for determining what has changed between versions, and then merging changes between versions.

Diffuse is a small and simple text merge tool written in Python. With Diffuse, you can easily merge, edit, and review changes to your code.

Kaleidoscope helps you find differences in text, images, and folders.

mergely is an online diff and merge editor and javascript library that highlights changes in text.

SmartSynchronize is a multi-platform file and directory compare tool.