"Rawstudio is an open source, GTK+-based RAW photo converter. It
takes a straightforward approach--no outside-the-box interface
designs, no fancy frills. The result is an easy-to-use application
that is stable enough for everyday usage, even though it is still
undergoing constant development.
"You can download the latest source code packages from the
project's Web site; the code is a simple compile without arcane
external dependencies. Because Rawstudio is GPL-licensed, your
Linux distro may ship it or include it in the official package
repository, but Rawstudio releases are dependable enough that
fetching and building the latest version is worth the trouble. As
of press time, the latest release is 0.5.1, which is the first to
support batch operations--an extremely helpful feature..."