O.S. Linux Mint 18 'Sarah' "Xfce 64-bit" - installation problem
http://brackets.io correctly selects Brackets.Release.1.8.64-bit.deb which downloads, however a libgcrypt11 unsatisfied dependency prevented installation by software manager. By installing Transitional libgcrypt11-dev and then using the via PPA for Ubuntu instruction at http://www.webupd8.org/2013/11/install-brackets-in-ubuntu-via-ppa-open.html Brackets did install.
I suppose it's possible that brackets really ought to be dependent on libgcrypt20, which is current, rather than libgcrypt11, which seems to be deprecated.