While searching for shit that might help DA (specifically was looking for a way to "unformat" an ext4 partition) I came across this file explorer that is presented as a file recovery tool and I have had a chance to guinea pig it (I was a bit leery). It reminds me of an old, no longer viable (doesn't support modern ext? filesystems, not even modern ext2 anymore) program called Explore2fs that I used to like (good, because it is self contained and doesn't install any drivers). I have been without such a program ever since and have missed it. I know there have been other things but I didn't want to install foreign drivers. I keep a squeaky clean Windows setup for my gaming.
This program, called Linux Reader by DiskInternals is much like that, only better. First of all it supports modern Ext2/3/4 and ReiserFS, as well as Windows filesystems. It does previews when you click files, and thumbnails if you turn it on. (Not I... I hate thumbnail views, in fact if not for taking a screenshot I would have it in detailed list view)
Reading your fstab file so it can label your partitions according to mount points is a nice touch too.
No, it doesn't actually let you read your swap partitions, it only lists them. (It just says unsupported filesystem if you try). Of course it can't, swap data is incoherent garbage. You might read strings of bits belonging to certain files that were read at some time if not overwritten, but it's not useful to an individual.
Yes, previews and such. When it's a text file that's especially useful (copy and paste text). However, when you want to copy a file it's a bit of bollocks to "save" it. A few steps you have to click through, choose a destination for the selected files/directories etc. I think some of it is unnecessary, but whatever, it works well.
It only mounts read-only, so it should be safe.
Here is the official site for the program: