Atoms, Symbols and Equations
Unique interactive multimedia Chemistry teaching software that tests students as they learn. Topics covered include: elements, atoms and molecules, word equations, chemical symbols, Periodic Table and chemical formulas. Plus interactive simulations to teach the balancing of chemical equations... As far as possible, skills are taught through familiar examples, to help reinforce general chemical knowledge. ... Questions constantly test understanding and hints are given when answers are wrong. ... Written by a teacher for use in schools, but an excellent personal tutor for anyone beginning to...
http://www.chemistryteaching.com/download/chemxa.exe - 696Kb - Download - Screenshot

Five Cellular Automata
A cellular automaton consists of: (a) A structure of cells, such as the squares on a chess board. (b) A set of values or "states" such that each cell is associated with a particular state. (c) A set of rules describing how one state of the system (a particular configuration of cells in specific... A simulation of the Belousov-Zhabotinsky chemical reaction in which, beginning from a random state of the system, spirals and curlicues "spontaneously" emerge. ... Viral Replication, a simulation of a population of dividing cells subject to viral infection.
http://www.hermetic.ch/pca/pca_setup.zip - 2Mb - Download - Screenshot

Atoms, Bonding and Structure
Unique interactive multimedia Chemistry teaching software which tests students as they learn. Topics covered include: elements, compounds, mixtures, structure of materials, bond energies and the Periodic Table. Plus interactive simulations to teach atomic structure, ionic bonding and covalent... As far as possible, skills are taught through familiar examples, to help reinforce general chemical knowledge. ... Written for use in schools, but an excellent personal tutor for anyone beginning to study Chemistry.
http://www.chemistryteaching.com/download/chemxb.exe - 713Kb - Download - Screenshot

Kintecus
Powerful Industrial Strength/Research Grade chemical modeling, chemical kinetics and equilibrium software for simulation of combustion, nuclear, biological, enzyme, atmospheric and many other processes via a graphical interface. Kintecus features the ability to quickly run Chemkin/SENKIN II/III... Note that Kintecus will actually fit the parameters at EXACTLY the time your data was measured with confidence bands/uncertainty analysis. ... Unlike other programs, Kintecus DOES NOT interpolate a function against your data and then fit the values against this interpolation.
http://www.kintecus.com/kintecus.zip - 8Mb - Download - Screenshot