SIGIL EPUB EDITOR LIVES…
UPDATE 10/28/13) SIGIL 7.4 WAS RELEASED FOR BOTH MAC AND WINDOWS ON 10/27/13 — SO SIGIL IS STILL LIVING STRONG!!
The demise of any program is always a possibility.
In September 2013, the Sigil Development blog (http://sigildev.blogspot.com/) announced: “Sigil is not dead but it’s development has slowed considerably to the point it’s not being developed very much at this point. The best way I can describe it is Sigil is on life support.”
That put a scare into thousands of users.
FEAR NOT (Yet). On October 27, 2013, Sigil released the 7.4 update to their program you can Download Here
What would you do if Sigil ePub Editor stopped being available?
Any software, even depreciated ones, are still useful. You can continue to use them for years even without an update. And Sigil ePub Editor is still the best options I have found for for fiction and non-fiction formatting, so I would say continue to use it.
I will continue to recommend and use SIGIL ePub Editor; however, I am also looking into alternative options to offer my readers for ebook formatting.
In the mean time, I suggest you download the version(s) of Sigil that has worked for you in the past, and keep a back on a MASTER CD, just in case.
OTHER NEWS == SIGIL Project code moved to Github
Currently the source code for Sigil is no longer being managed on Google Code. It is now available on GitHub and can be accessed at https://github.com/user-none/Sigil . However you can still download the most current and depreciated SOFTWARE versions of Sigil from the Google Code site. http://code.google.com/p/sigil/