Any GUI Linux directory comparison tools that work?

I tried KDIFF3, it crashes partway through comparison. I understand that v1.10 has a bug and crashes when a directory has symlinks in it, as my home folder does.

I tried KDIFF3 v1.12 via the abomination called Flatpak, but it also crashes partway through scanning.

I tried MELD, it just hangs there "scanning" but uses no CPU and is doing nothing...

Ideas?

#Linux

@dancingtreefrog don't laugh, but I use WinMerge with Wine since I haven't found any Linux GUI tool that comes close....

If you only need compare, there's also FreeFileSync but for multi-threading they want a donation

edit to clarify: FreeFileSync works in 2 steps, a compare and a sync step, so you can use it for compare only

@peturdainn @dancingtreefrog I’ll second FreeFileSync. Have been using it for years (donation edition).