Name: Beyond Compare
File and folder diff tool.
Open Source: No
Deb 32-bit: http://scootersoftware.com/bcompare-18.104.22.16819_i386.deb
Deb 64-bit: http://scootersoftware.com/bcompare-22.214.171.12419_amd64.deb
RPM 32-bit: http://scootersoftware.com/bcompare-126.96.36.19919.i386.rpm
RPM 64-bit: http://scootersoftware.com/bcompare-188.8.131.5219.x86_64.rpm
We already have meld, which does this.
I'll give meld a look, thanks. I've been a longtime BCompare user (paid) and figured there may be other users as well.