| Err | Exception class for Perl 5 objects |
| Exception | Generic exception objects for Bioperl |
| Global | Global variables and utility functions |
| HTTPget | module for fallback HTTP get operations when
LWP:: is unavailable |
| IO | module providing several methods often needed when dealing with file IO |
| IOManager | Input and output manager for Perl5 objects. |
| Object | A core Perl 5 object. |
| Root | Hash-based implementation of Bio::Root::RootI |
| RootI | Abstract interface to root object code |
| Utilities | General-purpose utility module |
| Vector | Interface for managing linked lists of Perl5 objects. |
| Xref | A generic cross-reference object.
B |