KDiff3 is a file and folder diff and merge tool
Repository: https://github.com/ryuuzaki42/KDiff3_AppImage
Last version, need GlibC >= 2.34: https://github.com/ryuuzaki42/KDiff3_AppImage_last_version
Full version, with Qt6 and Glibc 2.34: https://github.com/ryuuzaki42/AppImage_Full_ArchImage/releases?q=KDiff3
https://download.kde.org/stable/kdiff3/?C=N;O=D