| Drugbank | A useful website: Few of existing drug coordinates and properties could be requested |
| Prodrg | Very useful site: Can generate reliable dictionaries for non-metal containign ligands |
| sweet2 | You can generate polysacharide coordinates and use them later |
| cactvs | A usefule site with some links to chemoinformatics websites |
| COD | Crystallographic Open Database: Potentially powerful resource for reliable ligand generation in future |
| Daylight:Smiles | Daylight website where you can find sufficient description of smiles strings |