qmol
A simple molecular weight calculator
qmol is a simple molecular weight calculator, available for Linux and Windows, derived from Tomislav Gountchev's KMol. You can enter a formula, (e.g. CH3(CH2)2OH) and get its molecular weight (60.0959 g/mol) and its elemental composition (C3H8O: C 59.96; H 13.42; O 26.62 %).
See the features list below for more details or consult the wiki page: https://sourceforge.net/p/qmol/wiki/Home/.
For Windows binary and source code see the files section: https://sourceforge.net/projects/qmol/files/
Binary packages (rpm/deb) for
openSUSE Leap 15.2-42.2, xUbuntu 20.10-19.10, 17.04, Fedora 33, CentOS 8, Scientific Linux 7, and Debian 10.0-8.0 can be found at: http://download.opensuse.org/repositories/home:/lineinthesand/