When comparing DiffMerge vs DeltaWalker, the Slant community recommends DiffMerge for most people. In the question“What are the best folder/file compare/diff tools for either OSX, Linux or Windows?” DiffMerge is ranked 8th while DeltaWalker is ranked 17th. The most important reason people chose DiffMerge is:
DiffMerge is free of charge to download and use for both commercial and open source projects. There's no license needed. However, people who want to contribute to the project monetarily [can do so](https://www.sourcegear.com/diffmerge/register).
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Completely free
DiffMerge is free of charge to download and use for both commercial and open source projects. There's no license needed. However, people who want to contribute to the project monetarily can do so.
Pro Cross platform
DiffMerge is cross platform and is available for all major operating systems. This means WIndows, Linux and OSX
Pro Folder compare
Pro Three way merges
DiffMerge supports three way merges.
Pro Folder and file filtering
Easy to use rules for including or excluding folders and files from your folder comparisons.
Pro Cross platform
Works on Mac, Windows and Linux.
Pro Image comparison
2 & 3-way image comparisons with zooming & panning are available.
Pro 3-Way Text Merge
Pro Can compare remote directories
Can connect to remote folders via FTP, SFTP, FTPS, WebDAV, WebDAVS, Dropbox, and Google Drive.
Cons
Con Startup time can be slow
DiffMerge's startup time can be quite slow sometimes.
Con Very slow
Folder comparisons can take an extremely long time to load compared to other diff tools.
Con Can't save sessions
