Includes tools for 2D structure cleaning, 3D optimization and viewing, InChI generation and conversion, drawing of polymers, organometallics, Markush structures, and IUPAC systematic naming capability for molecules with fewer than 50 atoms and 3 rings.
Free download; already installed on all computers in Chemistry Level 5 Computer Suite.

Free for academic and personal use. Draw atoms and bonds, change bond order, change atom properties, create rings. Built-in structure–to–name and name–to–structure converters for IUPAC, SMILES and InChI.

A free database of chemistry structures and their associated information. To draw and search on a structure or substructure, click “Structure search,” then click the pencil inside the diagram, then select “Draw or Edit”

Free drawing tool for structure or substructure search with 2-D or 3-D display options. Accesses the NLM database of over 400,000 chemicals.

PubChem Structure Search allows the PubChem Compound Database to be to be queried by chemical structure or chemical structure pattern. The PubChem Sketcher allows a query to be drawn manually. Users may also specify the structural query input by PubChem Compound Identifier (CID) , SMILES , SMARTS , InChI , Molecular Formula , or by upload of a supported structure file format

A molecular visualisation system, maintained and distributed by Schrödinger.
Free download for educational use.

ChemDraw includes Struct=Name, ChemDraw/Excel and ChemNMR. Create stereochemically correct structures from chemical names, and get accurate IUPAC names for structures. Estimate NMR spectra from a ChemDraw structure with direct atom to spectral correlation. The ChemDraw ActiveX/Plugin adds chemical intelligence to your browser for querying databases and displaying information.
UC has a site licence for CambridgeSoft ChemDraw Prime and PerkinElmer ChemDraw Professional for use on UC computers. Log a Ticket to ITS for it to be pushed to the Software Centre on a particular computer.

The InChI Trust develops and promotes the use of the IUPAC InChI open-source chemical structure representation algorithm. Its website includes videos explaining InChI and downloadable software

MarvinSketch is a chemical editor for drawing chemical structures, queries and reactions. Although it is the default structure editor for Reaxys, it can be downloaded for personal use. The "Traditional Name" or the "Preferred IUPAC Name" name can be found after drawing a structure, then click 'Insert' and 'IUPAC Name'

Converts structures into identifiers or identifiers (InChI and Smiles) into structures or other identifiers (e.g. IUPAC names and CAS RNs)

Input a chemical name and OPSIN returns its depiction, SMILES string, InChI and its CML

From drawn structures generates SMILES, SMARTS, InChI and InChIKey