TINKER :-Molecular modelling

TINKER a molecular modeling software is a complete and general package for molecular mechanics and dynamics, with some special features for polypeptides. TINKER has the ability to use any of several common parameter sets, such as AMBER-95, CHARMM22, MM2(1991), MM3(2000), OPLS-AA and OPLS-UA.

Tessellator :- Molecular volume visualisation

Tessellator is an application for the tessellation of 3D volume in and around biological molecules. It creates Tcl script files which are run within VMD to visualize volumes in context with their associated molecular structures

Tonto :- Quantum Chemistry

Tonto is a free package for doing quantum chemistry simulations. The main objective of Tonto is to be simple--simple to understand, simple to use, and most importantly, simple to hack

VASP :- Vienna Ab-Initio Simulation Package

VASP is a Fortran90 plane-wave DFT code which can be run as a single-cpu or MPI-parallel code. It runs on many platforms, too many in fact for the VASP group to test and support VASP on all of them. Peter Klaver ported VASP to MacOSX using LAM-MPI and the IBM XLF/XLC compilers for MacOSX (now using gcc instead of XLC for MacOSX 10.4 'Tiger'). Performance is excellent and he has written a 'How to install+run VASP for dummies' instruction

Viewmol :-Molecule viewer

Viewmol is a graphical front end for computational chemistry programs. It is able to graphically aid in the generation of molecular structures for computations and to visualize their results

VMD :-Molecule viewer

VMD 1.8.5 VMD is a molecular visualization program for displaying, animating, and analyzing large biomolecular systems using 3-D graphics and built-in scripting. VMD supports computers running MacOS-X,and now uses native windowing and hardware acceleration. The vmd-xplor package is a combination of VMD with the xplor structure determination package
From Clipboard

Widgets :- A collection of widgets

A collection of widgets, if you see any I've missed please let me know

XDrawChem :-Structure drawing

XDrawChem is a two-dimensional molecule drawing program for Unix operating systems. It is similar in functionality to other molecule drawing programs such as ChemDraw (TM, CambridgeSoft). It can read and write MDL Molfiles, and read ChemDraw text and binary files, to allow sharing between XDrawChem and other chemistry applications, and it can create images in popular formats like PNG and EPS.

X-score :-Calc binding affinity

X-score is a scoring function that computes the binding affinities of ligands to a target protein (Dr. Xueliang Fang and Dr. Renxiao Wang J. Med. Chem. 2003, 46 2287) whilst it was written for SGI it compiles fine with either Apples GCC or the IBM c++ compiler.

Zodiac :- Human steered molecular docking

Zodiac is the result of work by Nicola Zonta on developing an environment for human steered computation approaches to drug design. The application is built upon OpenBabel and the aim is to use simple input devices to allow the user to interact with a molecule and guide it into an active site. To date they have implemented haptic device support so you can feel when the molecule bumps into the receptor, and wiimote head tracking for 3D visulisation.
zodiac_1
The application is still in early development but already has impressive graphics capabilities. In addition Zodiac now includes a front-end to the
PLANTS docking engine.
zodiac_2