iChem, written in Cocoa for Mac OS X exclusively, is a full-featured periodic table and molecular weight calculator. It offers a multitude of features you won't find in many other places. The molecular weight calculator alone is invaluable to chemistry professors, students, and practitioners the world across.
v1.3 [Apr 24, 2010]
- Moved registration scheme to the FSS style
- Updated some information on a few elements
- Fixed a small leak in the molecular weight calculator
