Portable file format to export Photoshop layers
I'm working on web-apps and frequently have to slice designer-made PSD files as HTML.
However, I'm a GNU/Linux user, and in Gimp, PSD files look different than in Photoshop, so I'm forced to use a computer that has Photoshop installed to check design consistency.
I would like to export layered PSD files in some compatible format which Gimp, Inkscape, or any other free software package can open. I've tried Layered TIFF, and basically every single file format that Photoshop can export, but to no avail - the best Gimp can import is still PSD files.
Perhaps there's some open format that can handle layers, or some combination of format/application that supports Photoshop layers. Then I'll tell all the designers to send all design files in TIFF, or whatever the format, files.
In the answer I provided an update about Gimp's PSD support, but the compatible file format question remains - though the trend to use Photoshop isn't likely to vanish for the next couple of years, it's absolutely necessary to have a standard, interoperable file format to exchange editable images.
P.S. I found a similar question here, but the answer is barely suitable.
I see that PSD support in GIMP 2.8 is vastly improved, perhaps to the point that sans-photoshop experience is possible. Ironically, the new version is easier to try on Windows than on Ubuntu (they have outdated version in the repository), so I tried it on Fedora, on previously problematic PSD files and maybe PSD support is not an issue anymore.
Update: Here's a link on how to install the latest version in Ubuntus: http://howtoubuntu.org/how-to-install-the-latest-version-of-gimp-in-ubuntu#.Ui3Tp9-B31c
Though, if the PSD problem persists and no other options will be available, I will try to work with the Gimp team on the PSD import module to see if I help can improve anything (I can program both Lisp and C).