Structure Drawing Tools

Red - Costware  Green- Freeware/Shareware

Program/Site

Brief Description

ChemSketch A structure and figure drawing program in one.  Can also generate 3D structures from 2D drawings and much more.  A pretty nice program, robust, and powerful once you get use to it.
ISIS MDLŽ ISIS/Draw is a chemically intelligent drawing package that enables you to draw chemical structures using the same intuitive signs and symbols used for paper sketches. You can insert your ISIS/Draw sketches into documents, Web pages, spreadsheets, and presentations. You can also use ISIS/Draw to create structures to register into 2D and 3D molecule, polymer, and reaction databases, and to create queries for searching these databases.
XDrawChem 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. XDrawChem has been tested on Linux, SGI IRIX 6.5, Sun Solaris, Mac, and Windows