Gentoo ebuild is provided with each release directly on the download page.
Several packages for this system were created by Rain_Maker:
openSUSE 10.3, binary package 32 Bit:
http://www.pc-forum24.de/downloads.php?do=file&id=1107
openSUSE 10.2, binary package for 32 Bit:
http://www.pc-forum24.de/downloads.php?do=file&id=1108
Source-RPM, which can be rebuilt with 'rpmbuild –rebuild bkchem-0.12.0-rm.1.src.rpm'
Arch user repository PKGBUILD is available:
Martin Ballaschk contributed a all-in-one bundle of BKChem. I can be found on the official download page.
BKchem.app is a Mac OS X app bundle that will help you run BKchem in Mac OS X 10.5 (Leopard). It launches Python.app (which is part of the Mac OS system frameworks) that runs the BKchem scripts. As BKchem makes use of the Tcl/Tk GUI toolkit you will not have native menu bars. Mac OS 10.4 (Tiger) is not supported.
The bundle was created with the open source bundling tool Platypus.