| ATMConfig | manage ApTest Manager configuration files |
| Account | manage accounts |
| ApLog | Logging routines |
| ApTest::DBI | base class for the ATM RDBMS updater libraries |
| Compress | compress content to client if acceptable |
| DataFile | master class for managing data files |
| Framework | catchall package for broadly used methods |
| Mailer | send electronic mail |
| Notify | notify users of system changes |
| Profile | collection of functions for working with profiles |
| Recurse | collection of methods for finding files |
| Report | collection of functions for working with reports and templates |
| ReportDB | report settings database class |
| ReqCollection | class representing a subset of requirements |
| ReqDB | requirements database class |
| ReqFields | class to represent and manipulate requirement schema |
| Requirement | object representing a requirement |
| Result | result definition class |
| Schema | class to represent and manipulate test suite schemas |
| SchemaField | class to represent and manipulate a schema field |
| Suite | class representing a test suite |
| SuiteDB | suite metadata class |
| TestCase | class representing a test case |
| TestDB | test case database class |
| TestSession | class representing a test session |
| TestSet | class representing a test set |
| Variable | class representing a session variable |
| VariableSet | class representing sets of session variables |
