| Name | Description | Type | Package | Framework |
| AtomType | The base class for atom types. | Class | org.openscience.cdk | CDK |
| AtomTypeMapper | An AtomTypeMapper allows the mapping of atom types between atom type schemes. | Class | org.openscience.cdk.atomtype.mapper | CDK |
| CDKAtomTypeMatcher | Atom Type matcher that perceives atom types as defined in the CDK atom type list org/openscience/cdk/dict/data/cdk-atom-types. | Class | org.openscience.cdk.atomtype | CDK |
| EStateAtomTypeMatcher | Determines the EState atom types. | Class | org.openscience.cdk.atomtype | CDK |
| IAtomTypeGuesser | Classes that implement this interface are atom type guessers. | Interface | org.openscience.cdk.atomtype | CDK |
| IAtomTypeMatcher | Classes that implement this interface are atom type matchers. | Interface | org.openscience.cdk.atomtype | CDK |
| MM2AtomTypeMatcher | Class implements methods to assign mmff94 atom types for a specific atom in an molecule. | Class | org.openscience.cdk.atomtype | CDK |
| MMFF94AtomTypeMatcher | Class implements methods to assign mmff94 atom types for a specific atom in an molecule. | Class | org.openscience.cdk.atomtype | CDK |
| StructGenAtomTypeGuesser | AtomTypeMatcher that finds an AtomType by matching the Atom's element symbol. | Class | org.openscience.cdk.atomtype | CDK |
| StructGenMatcher | AtomTypeMatcher that finds an AtomType by matching the Atom's element symbol. | Class | org.openscience.cdk.atomtype | CDK |
| SybylAtomTypeMatcher | Atom Type matcher for Sybyl atom types. | Class | org.openscience.cdk.atomtype | CDK |